JP2001215546A - Camera with electronic dial - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a camera with an electronic dial having satisfactory operability to enable the change of a shutter speed and an exposure correction value with the electronic dial. SOLUTION: This camera has a shutter dial 2 for setting the shutter speed, an exposure correction dial 3 for setting exposure correction and an electronic dial 5. The shutter dial 2 and the exposure correction dial 3 are provided with electronic dial positions 6 and 7. The change of the shutter speed and the exposure correction value is made possible by the electronic dial respectively, in correspondence to the electronic dial positions, when the shutter dial 2 or the exposure correction dial 3 is set at the electronic dial positions.

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 plurality of setting dials and an electronic dial, and more particularly to a camera with an electronic dial having good operability.

[0002]

2. Description of the Related Art In a conventional camera with a dial, usually,
The shutter time is set with the shutter dial, and the exposure compensation is set with the exposure compensation dial. Both the shutter dial and the exposure correction dial are dials having a maximum rotation range of 360 degrees, and set values are indicated on the dial surface. By setting the dial in accordance with this notation, the shutter time is set for the shutter dial, and the exposure correction value is set for the exposure correction dial. Here, the shutter time set by the shutter dial is valid when the exposure mode is Tv (shutter speed priority AE) or M (manual exposure). When changing settings with the dial,
For example, if you want to set the shutter time, you can turn the dial with the shutter time indicated and set the dial to the desired setting value, so you can see at a glance which dial to turn and which setting will change, so camera operation It was easy.

In a camera with an electronic dial, setting of a numerical value using the electronic dial is performed by detecting the rotation direction and the amount of rotation of the electronic dial and performing arithmetic processing on software. For this reason, it is possible to set numerical values in fine units,
The upper and lower limits of the set value can be set freely.

Here, the electronic dial can be rotated infinitely in the same direction, and a plurality of set values can be changed with one electronic dial, so that the set values and setting items are displayed on the electronic dial. Do not. For this reason, when changing settings with the electronic dial, the setting contents are displayed on the LCD in the viewfinder and the external LCD, and the user can rotate the electronic dial while checking the displayed contents to obtain the desired setting value. I'm trying to get

[0005]

In a conventional camera with a dial, the notation space on the dial surface is small and AD conversion is required, so that it is not easy to set a fine numerical value. Further, in a camera with an electronic dial, when one electronic dial has a plurality of functions, there is a problem that it is difficult to know which function setting changes with the electronic dial.

An object of the present invention is to provide an electronic dial position on a shutter dial and an exposure correction dial, and set the shutter dial or the exposure correction dial to the electronic dial position, thereby changing the shutter speed and the exposure correction value with the electronic dial. To provide a camera with an electronic dial that allows the user to determine items that can be set with the electronic dial according to the exposure mode when both the shutter dial and the exposure compensation dial are set to the electronic dial position. is there.

[0007]

In order to achieve the above object, according to the present invention, a shutter dial for setting a shutter speed and an exposure correction dial for setting an exposure correction are provided. And, in a camera having an electronic dial, an electronic dial position is provided for the shutter dial and the exposure correction dial, and when the shutter dial or the exposure correction dial is set to the electronic dial position, the electronic dial corresponding to each is set. The shutter speed or the exposure correction value can be changed.

According to a second aspect of the present invention, in the camera with the electronic dial according to the first aspect, there is provided an exposure mode switching means for switching an exposure mode, and both the shutter dial and the exposure correction dial are set to the electronic dial position. When the exposure mode is the shutter speed priority AE (Tv) or manual exposure (M), the shutter speed can be changed by the electronic dial, and the exposure mode is the aperture priority AE (Av) and the program AE. In the case of (P), synchro (X) or bulb (B), the exposure compensation value can be changed by the electronic dial.

According to the above configuration, the shutter speed and the exposure correction value can be changed by the electronic dial if necessary, and items that can be set in accordance with the exposure mode can be set by the electronic dial. .

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, an embodiment of a camera with an electronic dial according to the present invention will be described with reference to the drawings.

FIG. 1 is an external view of a camera with an electronic dial of the present invention, a shutter dial and an exposure correction dial attached thereto, and FIG. 2 is a block diagram showing a circuit configuration of the camera with an electronic dial of the present invention. In the figure, a shutter dial 2 and an exposure compensation dial 3 are provided above a camera 1.
An electronic dial 5 is provided at the front of the camera 1 on the holder side. An electronic dial position 6 and an electronic dial position 7 are provided on the shutter dial 2 and the exposure correction dial 3, respectively. Shutter dial 2 is electronic dial position 6
, The electronic dial 5 functions as a shutter dial, and when the exposure correction dial 3 is at the electronic dial position 7, the electronic dial 5 functions as an exposure correction dial.

Referring to FIG. 2, the circuit configuration of a camera with an electronic dial according to the present invention will be described. A photometric circuit 11 for measuring a luminance value of a subject; an exposure mode setting circuit 12 for setting an exposure mode; a shutter time setting circuit 13 for setting a shutter time; and an exposure for setting exposure correction. A correction setting circuit 14 and an electronic dial detection circuit 15 for detecting a rotation direction and a rotation amount of the electronic dial are provided, and a photographer sets photographing conditions. In order to shoot under the set shooting conditions, the exposure calculation circuit 16 calculates an appropriate shutter time and aperture value based on the exposure amount obtained based on the photometry value of the photometry circuit 11, and the exposure calculation circuit 16 calculates the shutter time and the aperture value. A shutter control circuit 17 for controlling a shutter according to a shutter time and an aperture control circuit 18 for controlling an aperture according to an aperture value calculated by the exposure calculation circuit 16 are provided. Further, in order to display the exposure mode, the exposure correction value, the shutter time, and the aperture value, the display panel 19 and a display control circuit 2 for controlling the display panel 19 are displayed.
0.

Normally, each setting is made using the shutter dial 2 and the exposure compensation dial 3 and, if necessary, the electronic dial position is set, so that the electronic dial 5 can be used to make detailed settings for shutter time and exposure compensation. It can be carried out. Here, there is an advantage that the electronic dial 5 can be easily operated while holding the camera 1.

By providing an electronic dial position for each setting dial, there is also an advantage that it is possible to immediately recognize which dial the electronic dial 5 is playing.

In the event that both the shutter dial 2 and the exposure compensation dial 3 are in the electronic dial position, the exposure mode is Tv (shutter speed priority AE)
Alternatively, in the case of M (manual exposure), the electronic dial 5 functions as a shutter dial, and the shutter speed can be set in detail.

The shutter dial 2 and the exposure correction dial 3 are both in the electronic dial position, and the exposure mode is Av (aperture priority AE), program AE (P), synchro (X) or valve (B). In the case of (1), the electronic dial 5 functions as an exposure correction dial, and detailed setting of the exposure correction can be performed.

This is determined on the assumption that the electronic dial 5 preferentially performs the role of the shutter dial during the normal operation of the camera. Exposure mode is A
In the case of v, P, X or B, since the shutter time is automatically determined by the exposure calculation device, the electronic dial is assigned to the exposure correction dial, and in other cases, it is assigned to the shutter dial. Here, when the shutter dial and the exposure correction dial are both in the electronic dial position and the exposure mode is Tv or M, the exposure correction value is set to 0.

During the drive mode setting operation, the electronic dial functions as a drive mode setting dial. Also, during the multiple exposure number setting operation, the electronic dial functions as a multiple exposure number setting dial. During the custom function setting operation, the electronic dial functions as a custom function setting dial.

[0019]

As described above, in the camera with the electronic dial according to the present invention, the shutter speed and the exposure correction value can be changed by the electronic dial, and the items that can be set by the electronic dial can be determined by the exposure mode. It becomes possible.

Further, since the setting dial is provided with the electronic dial position, it is easy to distinguish the use of the setting dial and the electronic dial, and the advantages of both types can be used properly. Also, it is possible to see at a glance which function the electronic dial is set to. When both the shutter dial and the exposure correction dial are in the electronic dial position, items that can be set by the electronic dial are determined by the exposure mode.

[Brief description of the drawings]

FIG. 1 is an external view of a camera with an electronic dial according to the present invention.

FIG. 2 is a block diagram showing a circuit configuration of a camera with an electronic dial according to the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Camera 2 Shutter dial 3 Exposure compensation dial 4 Liquid crystal display part 5 Electronic dial 6, 7 Electronic dial position 11 Photometry circuit 12 Exposure mode setting circuit 13 Shutter time setting circuit 14 Exposure compensation setting circuit 15 Electronic dial detection circuit 16 Exposure calculation circuit 17 Shutter control circuit 18 Aperture control circuit 19 Display panel 20 Display control circuit

Claims (2)

[Claims] 1. A camera having a shutter dial for setting a shutter speed, an exposure correction dial for setting exposure correction, and an electronic dial, wherein an electronic dial position is provided on the shutter dial and the exposure correction dial. Alternatively, when the exposure dial is set to the electronic dial position, a shutter speed or an exposure correction value can be changed by the electronic dial corresponding to each of the electronic dial positions. 2. A camera with an electronic dial according to claim 1, further comprising an exposure mode switching means for switching an exposure mode, wherein the exposure mode is set when both the shutter dial and the exposure correction dial are set to the electronic dial position. When the shutter speed is AE (Tv) or manual exposure (M), the shutter speed can be changed by the electronic dial, and the exposure mode is aperture AE (Av), program AE (P), synchro (X) Alternatively, in the case of the bulb (B), the exposure compensation value can be changed by the electronic dial.