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Power Source and

Except for the number of possible shots (battery life), all the specifications are the same

Shooting Performance

as those of the EOS-1D Mark III. Because the EOS-1Ds Mark III has the full-frame CMOS

sensor and full-frame Self Cleaning Sensor Unit, battery life is shorter than that of the

EOS-1D Mark III by about 20%. At 73°F/23°C, this is approximately 1,800 shots maximum,

and at 32°F /0°C, approximately 1,400 shots maximum.

As with the EOS-1D Mark III, an automatic battery check is performed when the main

switch is turned on. Battery level is indicated by one of six levels on the LCD panel.

Current battery, remaining capacity (indicated in 6 levels with icon and in 1% increments),

current shutter count with the battery since the battery recharge, and recharge perform-

ance can be checked. Power turns off after the set time (1, 2, 4, 8, 15, or 30 min.) of

non-operation elapses. Even when set to [Off], the LCD monitor will turn off 30 min. after

idle operation, but camera power does not turn off.

Live View Function

The professional Live View Function included in the EOS-1D Mark III and EOS 40D is part

of the EOS-1Ds Mark III as well. In brief, Live View Function works either on the camera's

LCD monitor or by remote (with EOS Utility). It makes it possible to place the camera in

positions for which it would be difficult or impossible to look in the finder to check com-

position and verify exposure, depth of field or focus. It has grid display and aspect ratio

display features.

During Live View Function with the EOS-1Ds Mark III, an icon is now displayed to indicate

exposure simulation (when one presses the depth-of-field preview button or set C.Fn IV-

16-1). Other than this, the Live View Function is the same as that of the EOS-1D Mark III.

The EOS 40D enables AF and silent shooting during Live View Function, but these features

are not provided by the EOS-1Ds Mark III because of a difference in shutter design.

During Live View Function, approximately 300 shots can be taken at 73°F/23°C or 230

shots at 32°F/0°C. In the EOS Utility Ver.2.2 disk to be bundled with the EOS-1Ds Mark III,

a test-shooting feature and preview feature will be newly added to the Remote Live View

Function.

Test Shooting Window

In EOS Utility ver.2.1, users could adjust

the white balance in Remote Live View

Function using ambient light by looking

at the real-time Live View Function

image on the PC screen. They could then

store the results on the camera with a

single mouse click. However, users

could not check the real-time Live View

Function image for shots taken with the

flash, so they had to check the finished

shots, adjust the settings as needed

and retake the shot. The new Test Shooting function offers users a simple procedure for

adjusting white balance for flash photography, as follows:

IV. DISCUSSION OF NEW AND IMPROVED FEATURES