JPH06342179A - Camera - Google Patents

Abstract

PURPOSE:To provide a camera capable of rapidly and easily taking a photograph in which images other than a specific object image are blurred without using a special effect filter. CONSTITUTION:When an automatic in-exposing tilt mode is selected by a mode switching means 16, it is judged by a CPU 11 based on a range finder result by a multi-point range finder 12 and a photometry result by a photometric device whether or not a lens 1 should be tilted, and in the case of obtaining a stop value and a shutter speed allowable of tilting the lens, tilt motors 2 and 4 are driven by the CPU 11 through tilt motor driving circuits 3 and 5 in exposing so as to tilt the lens 1 around a horizontal axis and a vertical axis. Also, when a manual in-exposing tilt mode is selected by a photographer, the tilt motor driving circuits 3 and 5 are controlled by the CPU 11 in accordance with a tilt quantity which is set by the photographer by use of a tilt quantity setting means 17.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a camera having a lens tilt mechanism for tilting at least a part of a photographing lens in a lens barrel and a control means for controlling the lens tilt mechanism.

[0002]

2. Description of the Related Art Conventionally, a photographing mode selecting means such as a portrait mode and a landscape mode has been provided so that a photograph suited to a photographer's photograph image can be taken. Aperture value (FN
Cameras that change control such as O) are known.

Further, Japanese Laid-Open Patent Publication No. 2-118543 proposes a camera which can obtain a soft focus effect by driving a focus lens in the optical axis direction during photographing exposure.

Further, Japanese Patent Laid-Open No. 3-89221 proposes a camera which can drive a shift lens during exposure to obtain a special effect such as soft focus.

On the other hand, in Japanese Patent Laid-Open Nos. 2-105108 and 4-324843, the so-called tilt mechanism is used, and the distance is measured at a plurality of points in the photographing screen, and the distance measurement results are used as the basis. There is also proposed a camera that can drive a tilt mechanism and tilt a lens or a film surface to focus on all subjects on a focus detection point.

It is known that a special effect filter can be used as a means for enhancing the main subject.

[0007]

[Problems to be Solved by the Invention] A photographing mode selection means is provided so that a photograph suited to a photographer's photograph image can be photographed, and control of shutter speed, aperture value (FNO) and the like is changed according to the selected mode. In the conventional camera described above, the depth of field is generally controlled to be shallow when the portrait mode is selected, and the depth of field is controlled to be deep when the landscape mode is selected. However, with a lens having a large open F value such as a recent compact short zoom lens, there is a limit to making the depth of field shallow, and as a result, the difference in the effect of the shooting modes becomes thin, and which mode is used for shooting. However, there was a problem that the finished pictures would not change.

Further, as in the cameras disclosed in Japanese Patent Laid-Open Nos. 2-118543 and 3-89221, the focus lens is moved in the optical axis direction during exposure, and the shift optical system is exposed. In the conventional example in which the soft focus effect is obtained by moving, the effect affects the entire captured image, so that there is a problem that the main subject is also soft-focused.

On the other hand, even with a tiltable lens as disclosed in Japanese Patent Application Laid-Open No. 2-105108, when an object other than the main subject exists on the subject surface obtained by tilting, the image is sharp. I was able to shoot sharply only the main subject because it was shot in the depiction.

Further, the method of emphasizing the main subject by the special effect filter has a problem that the photographer is troublesome and the operability is remarkably poor.

An object of the present invention is to provide an image pickup apparatus (camera system) having a novel structure capable of solving the problems inherent in the above-mentioned known prior art, and more specifically, the open F value. It is an object of the present invention to provide a camera capable of taking a photograph suitable for a photographer's image even when a lens barrel having a large size is used, and particularly enhancing the effect of portrait photography.

[0012]

SUMMARY OF THE INVENTION In order to solve the aforementioned problems, the present invention provides a camera configured to tilt a taking lens during photographic exposure.

According to the camera of the present invention, by tilt-driving a lens having a tilt mechanism during exposure, it is possible to take a photograph by emphasizing a main subject suitable for portrait photography and the like, like a compact short zoom lens. Open F
Even with a lens with a large value, you can artificially reduce the depth of field,
It is characterized in that it is possible to take a photograph with a pseudo shallow depth of field even when the brightness of the subject is high and the aperture value must be reduced.

More specifically, the main object is determined by the distance determining means for measuring the object distance at a plurality of points on the photographing screen, and the position of the main object is determined based on the multi-point distance information. The position of is detected and the effective tilt amount and tilt direction are determined. By driving the taking lens during exposure with the tilt amount and tilt direction thus determined, a photograph in which the main subject is emphasized, that is, a photograph in which soft focus is applied to other than the main subject is taken.

Further, even when a subject is present in parallel to the film surface, the tilt amount setting means allows the photographer to set the tilt amount during the exposure, and it is possible to take a photograph with blurring other than the main subject. I am trying.

On the other hand, the tilting drive during exposure provides a photographic effect emphasizing the main subject, so that the effect is lost if the shutter speed is too fast. Therefore, due to the exposure, if only a shutter speed higher than the ineffective shutter speed is selected, the tilt drive during exposure is prohibited, and in the viewfinder to let the photographer know that no special effect can be obtained. A display unit for displaying a warning is also provided.

[0017]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 shows the configuration of a camera as an embodiment of a photographing apparatus according to the present invention. The camera of this embodiment is a camera having a lens barrel having a lens tilt mechanism.

In FIG. 1, reference numeral 1 denotes an optical system that can be tilted around the principal point position of the taking lens. The optical system 1 includes a tilt driving motor 2 in the horizontal direction and a tilt driving motor 4 in the vertical direction. You can tilt in the direction. Tilt motor drive circuits 3 and 5 drive the tilt drive motors 2 and 4 in response to signals from the CPU 11, respectively. 6 is a focusing motor, and a focusing motor drive circuit 7
The lens 1 is driven in parallel with the optical axis by the signal from. The focusing motor drive circuit 7 drives the focusing motor 6 by a signal calculated by the CPU 11 based on the distance measurement result detected by the distance measuring device 12. Reference numeral 8 denotes a lens movement amount detecting means, which detects the tilt amount of the lens by the tilt motors 2 and 4 and the movement amount of the lens by the focusing motor 6. 9 is a quick return mirror, a part of which is semi-transparent. A sub-mirror 10 is fixed to the quick return mirror 9. 12 is a known multi-point distance measuring device (Japanese Patent Laid-Open No. 2-18
No. 09 publication, etc., and is a plurality of positions (distance measuring points P1) in the photographing range shown in FIG.
~ P5) object distance is detected. Reference numeral 13 is a shutter means, and 14 is a photosensitive surface. Reference numeral 15 denotes a release means, which is a two-step switch that performs photometry and distance measurement at the first-step depressed position of the release button and drives the shutter means 13 at the second-step depressed position. Reference numeral 16 is a mode switching means, which is one of three modes: a normal photographing mode, an AUTO exposure tilt mode in which the tilt amount is automatically set by the camera, and a manual exposure tilt mode in which the photographer sets the tilt amount by himself / herself. Can be selected, and the signal of the selected mode is transmitted to the CPU 11. Reference numeral 17 denotes a tilt amount setting means when the tilt mode during manual exposure is selected by the mode switching means 16.

Reference numeral 18 is a display means for displaying the shutter speed of the camera, the aperture value (FNO), the mode selected by the mode switching means 16, the number of films, and the like. It should be noted that the configuration related to the finder system is omitted in FIG.

FIG. 2 shows the finder field of view of the camera of this embodiment.

Reference numerals P1, P2, P3, P4, and P5 denote distance measuring points. The multipoint distance measuring device 12 detects the distance of the object at each distance measuring point on the photographing screen. The distance measurement value at each distance measurement point is transmitted to the CPU 11. Reference numeral 20 represents a finder frame (field frame), and the same range is exposed on the film surface. Reference numeral 21 indicates the shutter speed of the camera, and 22 indicates the aperture value (FNO). At these two positions, a value determined by program control in the camera or a value selected by the photographer is displayed.

Reference numeral 23 denotes a focusing display, which is a display means that lights up when the focus is on the focus detection point and blinks when the focusing point is out of focus. Reference numeral 24 is a display means for the selected mode, and in the figure, it is the mode display of the tilt during AUTO exposure. Further, when the shutter speed has no effect of tilt driving during exposure, the display means 24 blinks to warn the photographer that the special effect cannot be obtained.

FIG. 3 shows a display state of the display means 24 which changes at the same time when the mode switching means 16 is operated. The display means 24 in the finder are displayed in the order of (A) → (B) → (C). indicate.

FIG. 4 is a view for explaining the principle of photographing by the tilt mechanism. The lens indicated by L in FIG. 4A is an abbreviation of the lens group shown in FIG. When attempting to focus on all the subjects a, b, and c that are lined up on a plane 32 that is inclined with respect to a plane (hereinafter referred to as a lens orthogonal plane) 30 that intersects the optical axis of the lens, the lens passes through the lens. The image forming positions of the light fluxes of a, b, and c become the positions of A, B, and C, respectively, and the extension lines of the surface 31 and the plane 32 connecting the image forming positions and the extension line of the lens orthogonal surface 30 are connected. It is known that and intersect at point Q.
(This is called Scheimpflug's law.) Therefore, according to Scheimpflug's law, as shown in FIG. 4B, the points on the extension line of the film surface 34, the extension line 33 of the lens orthogonal plane, and the object a ′, If the lens orthogonal plane 33 is set so that the extension line 35 of the plane connecting b ′ and c ′ intersects at one point Q ′, all the subjects a ′, b ′, and c ′ are in focus.

On the contrary, it is possible to focus only on the subject b ', and if the lens is tilted during the exposure, only the subject b'and the subject a'or the subject c'will be focused. Can shoot with soft focus.

FIG. 5 is a view showing a tiltable photographing optical system of this embodiment. As is well known, in a photographing optical system in which a focusing operation is performed by moving only some lenses, the principal point position of the optical system is changed by moving some lenses, and The image formed on the image also shifts as the lens tilts. Therefore, in order to eliminate such a defect, the lens of the present embodiment is configured so that the focusing operation is performed by the entire extension and the tilt is performed around the principal point position h of the lens. Therefore, when the lens is extended by x in the focusing operation, (b) the tilt drive motor is also extended by x, and the axis of the tilt drive motor is moved to the position h '. That is, according to the configuration of the photographing optical system of the present embodiment, it is possible to eliminate the image shift on the film surface due to the focusing operation. (A) shows the case where the photographing optical system is in the shortest position and the photographing distance is infinite. (B) shows a state in which the optical system is extended by x by the focusing operation, and the principal point position moves from h to h '.
(C) shows a state in which the optical system is tilted around h'at the position extended in (b).

FIG. 6 is a diagram for explaining the relationship between the depth of field and the lens movement. The positions of the objects P, P ₁ and P ₂ that pass through the lenses to form images are P ′,
It indicates that they are P ₁ 'and P ₂ '. Actual film surface point P in FIG. 'When in position P _1',
P ₂ 'is a circle with a spread of blurring without forming an image on the film surface (circle of confusion). At this time, if the diameter δ'of this circle of confusion is smaller than the permissible circle of confusion, it is visually regarded as a point. Be done. Therefore, if δ'is the permissible circle of confusion, d1 in the figure is the rear depth of field and d2 is the front depth of field, d1 + d2.
The range within is considered to be in focus.

When the entrance pupil and the exit pupil of the lens L both coincide with the main surface and the size is D.

[0029]

[Equation 1]

Indicates the depth of field.

Based on the relationship expressed by the equation (7), the photographing lens is exposed so that the distance measuring point where the main subject exists can be detected by the multi-point distance measurement and only the main subject can be photographed as a clear image. By changing the tilt amount, it is possible to take a picture with the main subject emphasized.

FIG. 7 shows the relationship between the tilt of the lens and the distance measuring point in the camera of the present embodiment, taking the case of photographing the main subject at a distance R from the camera as an example. FIG. 3 is a view of a horizontally cut surface of the lens of FIG. The lines showing the shooting range of the taking lens are 41 and 43, the line showing the optical axis is 42, and at a position separated by the object distance R, as shown in FIG.
Points corresponding to distance measuring points P1 to P5 of Q1 to Q5, respectively.
And When the CPU 11 determines from the distance measurement information that the main subject is present in Q2 or Q4, Q2 to Q4
Must be an area to be emphasized, so even if the lens is tilted during exposure, this range must be within the depth of field centered on the distance R. Therefore,
The tilt amount (tilt between the surfaces 44 and 47 and the optical axis 42) that tilts the lens during exposure varies depending on the subject distance R, the FNO of the lens, and the focus detection point where the main subject exists. The subject within the range must tilt the lens so that it can be shot sharply.

Therefore, the distance R to the main subject, the distance measuring point where the main subject detected by the multipoint distance measurement result,
C with lens FNO and focal length f as parameters
The tilt (not shown) for tilting the photographing lens is changed by performing arithmetic control in the PU 11.

The lens of the photographing optical system used in this embodiment is a monofocal lens, and the amount of tilt during exposure is the subject distance at the center of the optical axis and the main subject detected by the multipoint distance measurement result. Depending on the distance measuring point and aperture value (FNO) that exist, the main subject is emphasized to shoot, and the shutter speed is 1/60 second or less when the tilt mode is selected during both AUTO and manual exposure. It only works when.

FIG. 8 shows the tilt direction in which the lens is tilt-driven corresponding to the focus detection point where the main subject exists, which is detected by the multi-point distance measurement.

The mode for tilt-controlling the lens by performing the above-described control in the CPU 11 is "AU".
"TO exposure during tilt mode". In the tilt mode during manual exposure, the photographer himself / herself sets the amount to be tilted. In this embodiment, the tilt drive direction is limited to the horizontal direction.

FIG. 9, FIG. 10 and FIG. 11 are flow charts for explaining a series of operations of the camera of this embodiment.

The camera is started from START by turning on the main switch of the camera.

In # 101, the mode selected by the mode switching means 16 is discriminated, and the "AUTO exposure tilt mode" is selected.
When selecting, proceed to # 102, and when selecting another mode, see FIG.
No. # 201.

In step # 102, the "auto exposure tilt mode" is displayed on the display means 18 and the display 24 in the finder field, and the flow advances to step # 103.

When the half-press of the release button (hereinafter referred to as S1) is detected in # 103, and the ON of S1 is detected, #
The process proceeds to 104, and if not detected, the process returns to # 101.

At # 104, a known photometry operation is performed.

In step # 105, the distance measuring device 12 measures the distance to the object on the distance measuring point shown in FIG.

At # 106, the tilt amount and tilt direction of the lens driven by the tilt motors 2 and 4 are calculated based on the distance measurement result at # 105.

In # 107, based on the results in # 104 and # 105, the shutter speed and the aperture value (FN
O) exposure is calculated, and the calculation result is stored in the CPU 11
Store in OM.

At # 108, it is determined whether the shutter speed T _V of the exposure calculated at # 107 is a shutter speed equal to or lower than T _Vk (1/60 seconds in this embodiment) which has a tilt effect during exposure. _{If the} shutter speed is faster than _Vk , proceed to # 116.

In step # 116, the display of the display means 18 and the display 24 in the finder field blink to warn that it is impossible to tilt during exposure, and the tilting operation during exposure is prohibited. move on. It should be noted that this warning display disappears after 5 seconds by the timer or when S2 OFF is detected in # 118.

In # 117, the state of S1 is detected. If S1 is in the ON state, the process proceeds to # 118. When the OFF is detected, the value stored in # 107 is reset and the display is turned off at the same time. Then, proceed to # 101.

At # 118, the full press of the release button (hereinafter referred to as S2) is detected. Here, since tilt shooting during exposure is not possible even if ON of S2 is detected,
Unless the FF is detected, the process does not proceed to # 101. When OFF is detected, the value stored in # 107 is reset, the display is turned off at the same time, and the process proceeds to # 101.

At # 109, the exposure value calculated at # 107 is displayed on the display means 18 and the displays 21 and 22 in the finder field, and the process proceeds to # 110.

In step # 110, the state of S1 is detected. If S1 is in the on state, the process proceeds to step # 111. When it is detected in the off state, the value stored in step # 107 is reset, and the display is turned off at the same time. Go to # 101.

In # 111, S2 is detected. ON of S2
If it is detected, the process proceeds to # 112. If it is detected to be OFF, the value stored in # 107 is reset, the display is turned off at the same time, and the process proceeds to # 103.

In # 112, exposure is started by opening the shutter means 13 by turning on S2.

At # 113, the tilt drive amount calculated at # 106 is output to the tilt motor drive circuits 3 and 5, and tilt drive is performed at # 114.

In step # 115, it is detected whether or not the exposure is completed. When it is detected that the exposure is completed, the value stored in the ROM is reset in step # 107 to end the series of operations.

When it is determined in # 101 of FIG. 9 that the "auto exposure tilt mode" is not set, it is determined in # 201 whether the "manual exposure tilt mode" is set.
# 202 for "tilt mode during manual exposure"
If not, proceed to # 301 in FIG.

In step # 202, the "tilt mode during manual exposure" is displayed on the display means 18 and the display 24 in the finder field, and the flow advances to step # 203.

In step # 203, the signal from the tilt amount setting means 17 is detected and the signal is stored in the ROM in the CPU 11. The stored signal is automatically reset after 6 seconds by the timer.

When S1 is detected in # 204 and when ON of S1 is detected, the process proceeds to # 205, and when not detected, # 1 in FIG.
Return to 101.

In # 205, the known photometry operation is performed as in # 104.

In step # 206, the distance measuring device 12 measures the distance to the object on the distance measuring point shown in FIG.

In # 207, like # 107, # 20
5, the exposure of the shutter speed and the aperture value (FNO) at the time of shooting is calculated based on the result of # 206, and the calculation result is stored in the ROM in the CPU 11.

At # 208, it is judged whether the shutter speed T _V of the exposure calculated at # 207 is a shutter speed equal to or lower than T _Vk (1/60 seconds in this embodiment) which has a tilt effect during exposure. _{If the} shutter speed is faster than _Vk , proceed to # 216.

In step # 216, the display of the display means 18 and the display 24 in the finder field blink to warn that it is impossible to tilt during exposure, and the tilting operation during exposure is prohibited. Go to.

In # 217, the state of S1 is detected, and S1 is detected.
9 is ON, the process proceeds to # 218, and when OFF is detected, the value stored in # 207 is reset, and
Proceed to 101.

At # 218, S2 of the release button is detected. Here, since tilt shooting during exposure is not possible even if ON is detected in S2, unless OFF is detected in FIG.
It does not proceed to # 101. When OFF is detected, the value stored in # 207 is reset and the # in FIG.
Proceed to 101.

At # 209, the exposure value calculated at # 207 is displayed on the display means 18 and the displays 21 and 22 in the viewfinder field, and the process proceeds to # 210.

In # 210, the state of S1 is detected. If S1 is in the ON state, the process proceeds to # 211. When OFF is detected, the value stored in # 207 is reset and the display is turned off at the same time. After that, the process proceeds to # 101 in FIG.

At # 211, S2 is detected. ON of S2
9 is detected, and if OFF is detected, the value stored in # 207 is reset, the display is turned off at the same time, and then the process proceeds to # 101 in FIG.

In step # 212, exposure is started by opening the shutter means 13 by turning on S2.

At # 213, the tilt drive amount set at # 203 is output to the tilt motor drive circuits 3 and 5, and tilt drive is performed at # 214.

In # 215, it is detected whether or not the exposure is completed. When it is detected that the exposure is completed, the value stored in # 207 is reset and the series of operations is completed.

If it is determined in # 201 that the "tilt mode during manual exposure" is not set, it is determined in # 301 whether the normal shooting mode is set. # 3 in normal shooting mode
02, and if different, proceed to # 101 in FIG.

If S1 is detected in # 302 and it is detected that S1 is ON, the process proceeds to # 303. If not detected, ## in FIG.
Return to 101.

In # 303, the known photometric operation is performed as in # 104.

In step # 304, the distance measuring device 12 measures the distance to the object on the distance measuring point shown in FIG.

In # 305, as in # 107, # 30
3, the exposure of the shutter speed and the aperture value (FNO) at the time of shooting is calculated based on the result of # 304, and the calculation result is stored in the ROM in the CPU 11.

In step # 306, the exposure value calculated in step # 305 is displayed on the display means 18 and the displays 21 and 22 in the viewfinder field, and the flow advances to step # 307.

In step S307, the state of S1 is detected. If S1 is in the ON state, the process proceeds to step # 307. When OFF is detected, the value stored in step S305 is reset and the display is turned off at the same time. After that, the process proceeds to # 101 in FIG.

In step S308, S2 is detected. ON of S2
When it is detected, the process proceeds to # 309, and when OFF is detected, the value stored in # 305 is reset, the display is turned off at the same time, and the process proceeds to # 302.

At # 309, exposure is started by opening the shutter means 13 by turning on S2.

In step # 310, it is detected whether or not the exposure is completed. If it is detected that the exposure is completed, the value stored in step # 305 is reset, the lighting of the display is simultaneously extinguished, and then a series of operations is completed.

In the "AUTO exposure tilt mode" of the above-described embodiment, the control is performed by the focus detection point where the main subject detected by the multi-point distance measurement result exists. However, when the subject is on substantially the same plane, the main subject It becomes less reliable. In that case, by selecting "tilt mode during manual exposure", the photographer can set the blur range by himself, and the tilt amount and aperture value (FNO) are controlled accordingly to take a picture with the main subject emphasized. Can be possible.

In this embodiment, although the lens has a fixed focal length, it can be applied to a zoom lens by using an optical system that does not cause image shift even when tilted by the zoom lens, and the shutter speed is also a parameter. There is no problem if one is added to the control variables. Further, although only three modes are described, it goes without saying that the present invention can be applied to cameras having other modes and interchangeable lens type cameras.

Although the passive type distance measuring device by TTL is used as the multi-point distance measuring device, it may be an active type distance measuring device.

[0086]

As described above, according to the camera of the present invention, it is possible to take a photograph by emphasizing the main subject suitable for portrait photography etc. by tilting during exposure.
Even with a lens having a large open F value such as a compact short zoom lens, the depth of field can be artificially made shallow, and the depth of field can be artificially made even when the brightness of the subject is high and the aperture value cannot be reduced. You can take photos with shallow depth.

Further, even when there are a plurality of subjects parallel to the film surface, the photographer himself / herself can set the tilt amount during exposure by the tilt amount setting means to take a photograph with blurring other than the main subject.

On the other hand, when a shutter speed higher than the ineffective shutter speed is selected, the tilt drive during the exposure is prohibited, and a warning is given in the viewfinder to inform the photographer that the special effect cannot be obtained. Since the display means for displaying is also provided, it is possible to prevent shooting without special effects.

[Brief description of drawings]

FIG. 1 is a configuration diagram of a camera that is an embodiment of the present invention.

FIG. 2 is a diagram showing a display in a viewfinder of a camera that is an embodiment of the present invention.

FIG. 3 is a diagram showing a change in a display 24 in a viewfinder of a camera which is an embodiment of the present invention.

FIG. 4 is a diagram showing the effect of tilt.

FIG. 5 is a diagram showing movement of a lens of a camera that is an embodiment of the present invention.

FIG. 6 is a diagram illustrating depth of field.

FIG. 7 is a diagram showing a photographing effect by a tilt during exposure in a camera which is an embodiment of the present invention.

FIG. 8 is a diagram showing the tilt direction of the tilt mode during exposure of the camera of the embodiment of the present invention.

FIG. 9 is a flowchart showing a series of operations of the camera of one embodiment of the present invention.

FIG. 10 is a flowchart showing a series of operations of the camera of one embodiment of the present invention.

FIG. 11 is a flowchart showing a series of operations of the camera of one embodiment of the present invention.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Lens 2 ... Tilt motor 3 ... Tilt motor 4 ... Tilt motor drive circuit 5 ... Tilt motor drive circuit 6 ... Focusing motor 7 ... Focusing motor drive circuit 8 ... Lens movement amount detection means 11 ... CPU in camera 12 ... Multipoint Distance-measuring device for performing distance measurement 16 ... Mode switching means 18 ... Display means

─────────────────────────────────────────────────── ─── Continuation of front page (51) Int.Cl. ⁵ Identification code Office reference number FI technical display location G03B 13/36

Claims (6)

[Claims] 1. A lens tilt mechanism for tilting at least a part of a photographing lens with respect to an image forming plane, and a control means for controlling the lens tilt mechanism, wherein the control means comprises the lens during photographing exposure. A camera having a function of performing a tilt mode during photographing exposure for tilting the photographing lens by a tilt mechanism. 2. A lens tilt mechanism for tilting at least a part of a photographing lens with respect to an image plane, a control means for controlling the lens tilt mechanism, and a distance measuring device for measuring a subject distance at a plurality of points in a photographing screen. Distance control means, and determination means for determining a distance measurement point at which the main subject is likely to exist based on the distance measurement information obtained by the distance measurement means. Has a function of performing a tilt mode during photographing exposure for tilting the photographing lens by the lens tilt mechanism, and also has a function of determining at least one of a tilt driving amount and a tilt driving direction according to the output of the discriminating means. A camera characterized by being. 3. A lens tilt mechanism for tilting at least a part of a photographing lens with respect to an image plane, a control means for controlling the lens tilt mechanism, and a tilt amount setting that allows a photographer to set a range in which a subject is emphasized. The control means has a function of performing a tilt mode during photographing exposure in which the photographing lens is tilted by the lens tilt mechanism during photographing exposure, and the tilt amount set by the tilt amount setting means. A camera having a function of performing a tilt mode during manual exposure only for driving the lens tilt mechanism. 4. The control means prohibits the execution of the tilt mode during photographing exposure when the shutter speed at which the effective photographing effect is not obtained even if the photographing lens is tilted during photographing exposure is set, and the tilt mode is set in the viewfinder. The camera according to any one of claims 1, 2 and 3, wherein the camera has a function of displaying a warning. 5. The camera according to claim 1, wherein the lens tilt mechanism is a mechanism for tilting the taking lens about a horizontal axis. 6. The camera according to claim 1, wherein the lens tilt mechanism is a mechanism for tilting the photographing lens about a vertical axis.