JPH01300237A - Camera with learning function - Google Patents

Abstract

PURPOSE:To store and learn photographic conditions that a photographer intends and to take a photograph under the conditions by using an IC card which serves as an electronic storage medium and has a learning function as a storage means. CONSTITUTION:A fitting part 14 fitted with the IC card provided so as to store learnt photographic conditions is provided on the lower flank of the finder 12 of the camera 1 with the learning function. The photographic conditions are learnt with a learning function switch 4 and a normal mode and a learning mode are switched with a program changeover switch 8. Then this camera is equipped with a setting means for setting photographic conditions optionally, the storage means for storing the input photographic conditions, and a control means for photographing operation based upon information on the photographic conditions. Consequently, the photographic conditions that the photographer intends are inputted to the camera 1 and the camera 1 learns the photographic conditions to take a photograph under the photographic conditions that the photographer intends.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a camera having an automatic exposure function, and more particularly to a camera with a learning function that can store and learn photographing conditions arbitrarily set by a photographer.

[Prior Art] Several methods are known for automatically determining the exposure conditions necessary for a photographer to take a picture in a camera that uses film. Aperture-priority automatic exposure allows you to set the appropriate amount of exposure by keeping the aperture constant and changing the shutter speed. When photographers use aperture-priority automatic exposure, they can take photos that take depth of field into consideration. Shutter speed priority automatic exposure allows you to set the exposure amount appropriately by keeping the shutter speed constant and changing the aperture. When photographers use shutter speed priority automatic exposure, they can easily photograph objects that move at high speed. In programmed automatic exposure, the exposure amount can be appropriately determined using a program in which predetermined exposure conditions are stored. In addition to the normal program that has a normal program line in which both the shutter speed and aperture are changed, the program automatic exposure includes a shutter speed priority program that prioritizes the shutter speed and changes the aperture, and a shutter speed priority program that prioritizes the shutter speed and changes the aperture. An aperture priority program that changes the aperture is used. Also, a camera is known in which a photographer can arbitrarily set a program line for program automatic exposure.

(Refer to Japanese Unexamined Patent Publication No. 57-99623.) Several types of photometry methods are known for determining photographing conditions for cameras using film. Average metering measures the average light across the entire screen. This average metering provides a proper exposure when the brightness of the subject on the screen is average. Spot metering measures only a portion of the subject. This spot A11J light is a method in which the photographer searches for and measures the area to be photometered. Furthermore, center-weighted average i') Ill light, which is a combination of the above photometry methods, is a method that intensively measures light incident on the center.

Furthermore, in the case of multi-spot, 1) j light, multiple parts of the subject are measured, and the exposure values of each part are weighted and averaged to calculate the appropriate exposure. With multi-pattern n1 light, the screen is divided into a plurality of parts, and the exposure value is determined by measuring and calculating the light.

[Problem to be solved by the invention] Conventional cameras have the following issues.

(1) A program that allows exposure conditions to be set arbitrarily With an automatic exposure camera, the photographer must set the program line that he or she intends to use before taking a picture, and if the photographer wishes to change the program, he or she can do so. The work is relatively troublesome.

(2) When taking pictures with a programmed automatic exposure camera, the program diagram differs depending on the type of camera, so it is not possible to take pictures under the exposure conditions intended by the photographer with different types of cameras.

(3) In the photometry method, the camera weights the ΔP1 light specific gravity of the Jllll light pattern, so the photographer's ΔPJ
There are parts that do not match the optical image.

(4) Even if the photographer can set the exposure conditions and 4-way lighting method, the set shooting conditions can only be applied to that camera.

The present invention has been made in view of the above-mentioned problems, and an object of the present invention is to memorize and learn the shooting conditions intended by the photographer during program automatic exposure shooting so that the program line intended by the photographer can be adjusted. To provide a camera with a learning function that can be manufactured, and also to provide a camera with a learning function that allows, when an IC card serving as a storage means is attached to another camera, to take a picture under the shooting conditions stored in the previously attached camera. be.

Means for Solving Problem C and Effects] This invention provides a setting means for arbitrarily setting photographing conditions;
A storage means for inputting and storing photographing conditions set by the setting means, and a control means for performing a photographing operation based on the information of the photographing conditions stored in the storage means in response to a release signal. There is.

In this invention, an IC card which is an electronic storage medium and has a learning function is used as a storage means.

Since the camera of the present invention is made to input the photographing conditions intended by the photographer and the camera learns the photographing conditions, the camera of the present invention becomes a camera capable of photographing under the photographing conditions intended by the photographer. Furthermore, by attaching an IC card storing photographing conditions intended by the photographer to another camera, the other camera becomes a camera capable of photographing under the photographing conditions stored in the IC card.

[Example] Embodiments of the invention will be described with reference to the drawings.

FIG. 1 shows a camera 1 with a learning function according to an embodiment of the invention. The camera 1 with learning function is shown in Fig. 2 (
A program diagram as shown in a) and FIG. 2(b)
It has a display section 2 that displays various information such as a photometric pattern as shown in FIG. A release button 3 for starting the photographing operation of the camera is provided near the display section 2. This learning function camera 1 has a learning function switch 4. The learning function switch 4 is used when the learning function equipped camera 1 learns photographing conditions. A mode changeover switch 6 is provided near the learning function switch 4. This mode changeover switch 6 is used when changing over between the program diagram mode and the photometry button mode.

A program changeover switch 8 is provided near the mode changeover switch 6. The program changeover switch 8 is used to change over between normal mode and learning mode in the program diagram. Further, the learning function camera 1 is provided with a setting switch group 10. The setting switch group 10 is used when inputting information about photographing conditions to be learned by the camera 1 with a learning function. The lower side surface of the finder 12 of the camera 1 with a learning function is provided with a mounting part 14 to which an IC card is attached to store learned photographing conditions.

The display unit 2 is composed of a liquid crystal display, etc., and is shown in Fig. 2 (
The program diagram shown in a), the photometry pattern shown in FIG. 2(b), and exposure value information are displayed. The setting switch group 10 is used to move the 4pj light specific gravity setting location of the photometry pattern, shutter speed TV, aperture value AV,
It is used to input information such as film sensitivity 5V (ISO) and pattern importance.

FIG. 3 is a normal program diagram that is stored in advance in the camera 1 with a learning function. In this program diagram, the horizontal axis shows shutter speed and TV, and the vertical axis shows aperture value and AV. Further, the EV value, which is the exposure amount, is also indicated by diagonal lines, and there is a relationship between EV, TV, and AV; EV-TV+AV. For example, at point 18, which is program line 16''2, the aperture F number is 2.8 (AV3), the shutter speed is 1/30 seconds (TV5), and the EV value is 3+5-
It becomes 8. Further, at point 20, which is not located on the program line, the aperture F number is 2 (AV2), the shutter speed is 1/60 second (TV6), and the EV value is 2+6-8. That is, each diagonal line of the EV value in FIG. 3 indicates a combination of shutter speed and F number of the same EV value. This program line 16 has a straight line from EVI to EV4 where the aperture is open and only the shutter speed changes, and from EV4 to EV20, the shutter speed increases by one step each time the EV value increases by 2. Therefore, the aperture has a straight line with an inclination such that the aperture is narrowed down by one step.

FIG. 4 shows a program diagram when the exposure value of the camera with learning function 1, which is an embodiment of the present invention, is learned. In this camera 1 with a learning function, the normal program line 16 is used as the basis before learning. Assume that when a photographer takes a photograph using this camera 1 with a learning function, this camera determines that the exposure amount is EVI4. If the photographer uses the normal program diagram of this camera to photograph the subject, the shutter speed will be 1 because the EVI is 4.
/250 seconds, aperture is set to F8.

If the photographer intends to blur the background of the subject, it is necessary to reduce the depth of field. To make the depth of field shallow, you need to open the aperture, but in the program diagram, one EV value has one aperture value and one shutter speed, so opening the aperture is unnecessary. It is possible. Therefore, point 22 at the same EV value 14
When shooting with a shutter speed of 1/1000 seconds and an aperture of F4, switch the program changeover switch 8 from the normal mode of the normal program line to the learning mode for learning.
Switch. Then, referring to the display section 2, the photographer inputs a shutter speed of 1/1000 second and an aperture F4 using the setting switch group 10, respectively. After that, if you press the learning function switch 4 to memorize the shutter speed 1/1000 seconds and aperture F4, the learning mode program diagram will be set to the shutter speed 1/1000 seconds starting from the values of EV4 and EV20 in the normal program diagram. , are changed to two straight lines 24 and 26 passing through the point 22 of the aperture F4. Furthermore, these two straight lines 24
．． 26, the point where it intersects with the straight line representing EV is the intermediate value between the grids of the graph for both shutter speed and aperture, but this camera can also set intermediate values. Therefore, when a photographer takes a picture, the exposure is set according to the program diagram shown by the solid line in FIG. 4 when the photographer takes a picture in the learning mode. Although this program diagram uses the point of EV value 4 as one starting point, it may also be set as a straight line 28 passing through EV value 1 shown by the dotted line in FIG. The next time you take a picture, you can similarly set the exposure conditions by switching to learning mode.

Therefore, by inputting the exposure setting value desired by the photographer, it is possible to set a program diagram close to the program diagram requested by the photographer.

FIG. 5 shows a program diagram for the learning function camera 1 of the second embodiment. In order to change the program line, the photographer switches the program changeover switch 8 from normal mode to learning mode. This camera 1 with a learning function is based on a normal program line 16. The input method is the same as in the previous embodiment. The initial exposure setting is shutter speed 1/125, indicated by point 30.
(TV7) and aperture F5.6 (AV5).

Even if the value of this point 30 is input and learned, the program diagram remains the same as a normal program diagram and does not change. Second
Shutter speed of point 32 is 1/250 for the second exposure setting value
seconds (TV8) and aperture F4 (AV4). When the value of this point 32 is input and learned, the program diagram becomes point 3.
The line is changed to a dotted line 34 passing between 0 and point 32. At this time, the AV value and TV value of point 35 on dotted line 34 are 1;! A
V-(5+4)/2-4. 5, TV-(7+8)/
2-7.5, the aperture is 22-22-4.75, and the shutter speed is 2°v-27·'-181.

The third exposure setting was set to a shutter speed of 11,500 seconds (T
V9), aperture F2.8 (AV3) (7) point 36. When the value of this point 36 is input and learned, the program diagram changes to a solid line 38 between points 35 and 36 on the dotted line 34. At this time, the AV value of point 39 on solid line 38 is (4,5+3)/2-3.75, and the TV value is (7,5+9
)/2-8.25, and the shutter speed is 28.25
-304, aperture is 22-3.67. Therefore, the program diagram for learning the imaging conditions three times is indicated by a solid line 38. In this way, by changing the exposure conditions from those set by the photographer, it is possible to create an automatic exposure program line intended by the photographer.

Next, an embodiment having a learning function for changing the photometric specific gravity of a photometric pattern as a photographing condition will be described. 6th
The figure shows a photometric pattern divided into five parts in this embodiment. The names of each part of this photometric pattern are: center part 40, upper left part 42, upper right part 44, lower left part 46, and lower right part 48. It is. The learning function of photometric specific gravity in this photometric pattern is shown below.

The mode selector switch 6 shown in FIG. 1 is switched from the program diagram mode to the photometry button mode. Also, the program changeover switch 8 is switched from normal mode to learning mode. First, a standard photometric specific gravity is set using the setting switch group 10.

In this case, the central portion 40 is set so that the overall ratio is 10.
is set to 8, and the other parts are set to 0.5 and stored. The stored setting values are displayed on the display section 2. The first photograph is taken using this photometric specific gravity. Next, during the second photographing, the photographer sets the δ-1 of the 1jPJ light pattern.
Assume that the light specific gravity is changed by setting the central part 40 to 6 and the other four parts to each of 1.

After the release button 3 is pressed and a photograph is taken with this set value of photometric specific gravity, this set value is inputted with the learning function switch 4. Therefore, it is updated to the first and second average value of the aF+light specific gravity portion of this camera.

In other words, the n1 light specific gravity is (8+6)/2-7 in the central part 40.
, upper left 42, upper right 44, lower left 46, and lower right 4
8 are (0,5+1)/2-0.75, respectively. In this case, the numbers displayed on the display section 2 are to the first decimal place, so 0.75 is displayed as 0.7. The display displayed on the display section 2 is shown in FIG. Since the total number of photometric specific gravity numbers is set to be 10, for example, if you input 7 at the center 40 and try to input 4 at the upper left 42, you will not be able to input it. In addition, the central portion 40,
When the photometric specific gravity of each of the upper left 42, the upper right 44, and the lower left 46 is input as 1, the lower right 48 is automatically determined to be 6. Next, when taking a third photograph, the photographer sets the photometric specific gravity to 5 for the center part 40 and 2 for each of the upper left 42 and the upper right 44.
Assume that the lower left 46 and lower right 48 are each changed to 0.5. The third photograph is taken using the learning function camera 1 using this n1 light specific gravity. After the release button 3 is pressed by the photographer and the photo is taken, the photometric specific gravity is the same for the first and second shots.
It is updated to the average value of the first time and the average value of the third time. In other words,
The center part 40 is (7+5)/2-6, the upper left 42 and the upper right 44 are (0,75+2)/2=1.375, the lower left 4
6 and lower right 48 are (0,75+0.5)/2-〇,6
It is. However, the number displayed on the display section 2 at the upper left 42 and the upper right 44 is 1.3.

FIG. 8 shows the &FJ light specific gravity changed after the third photographing on the display section 2. In this way, by applying the learning function to the photometric specific gravity of the photometric pattern, the camera has the photometric pattern intended by the photographer.

This camera 1 with a learning function uses an IC card as a storage unit having a learning function. This IC card is the first
The mounting shown in the figures is removably housed within part 14. Therefore, when installing the IC card, the IC card accommodated in the section 14 is
By removing the card and inserting it into another camera, you can take pictures using the shooting conditions of the IC card stored in the previous camera. In other words, even if the camera is changed, it is possible to take pictures under the shooting conditions intended by the photographer.

In the above-mentioned embodiment, the learning function switch 4 is switched when the camera is made to learn, but it may be made to learn automatically after shooting when manual shooting or when automatic program switching is changed.

[Effect of the invention] A camera with a learning function equipped with a removable IC card learns the shooting conditions under which the photographer takes pictures, and as the number of shots increases, the camera comes to have the shooting conditions intended by the photographer. . Furthermore, since the IC card is removable, by attaching this IC card to another camera, it is possible to take pictures with the other camera under the shooting conditions stored in the IC card.

[Brief explanation of the drawing]

FIG. 1 is a top view of a camera with a learning function according to an embodiment of the present invention, FIG. 2 is a diagram showing patterns displayed on the display section of the camera with a learning function, and FIG. 3 is a diagram showing patterns in this camera with a learning function. A normal program diagram for program automatic exposure; Figure 4 is a program diagram when the camera with a learning function learns in an embodiment of this invention; Figure 5 is a diagram of a program when the camera with a learning function learns in an embodiment of this invention. FIG. 6 is a diagram showing the photometry pattern in the embodiment of this invention, and FIG. 7 is the second program diagram of the photometry pattern displayed on the display section of the camera with learning function in the embodiment of this invention. FIG. 8 is a diagram showing the average value of the third light pattern displayed on the display section of the camera with a learning function in the embodiment of the present invention. 1...Camera with learning function, 2...Display section, 3...
Release button, 4...Learning function switch, 6...
Mode changeover switch, 8...program changeover switch, 10...setting switch group, 12...finder, 14...installation. Applicant's agent Patent attorney Tsuboi 4 Koma 1 Figure 2 0 1 2 3 4 5 6 7 8
9 TOl+TVfl Shutter speed Figure 5 Figure 7 Figure 8

Claims (1)

[Scope of Claims] Setting means for arbitrarily setting photographing conditions; Storage means for inputting and storing information on the photographing conditions set by the setting means; and Storage means for storing information in the storage means in response to a release signal. In the camera with a learning function, the storage means stores the information each time new photographing condition information is input from the setting means. 1. A camera with a learning function, characterized in that the camera has a learning function that updates stored information on shooting conditions based on information on shooting conditions and new information on shooting conditions from the setting means.