Canon PowerShot G1, Service Manual

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G11
Fig. 2-9 Shutter release time lag and shooting interval
-Digital signal-processing IC for stress-free, quick picture-taking.
The PowerShot G1 uses a Canon-developed digital signal processing IC. Despite the camera's high pixel count, the digital
signal processing is quick response due to this IC. The PowerShot G1 also has a buffer memory where the captured image
is temporarily stored. As the digital signal processing IC and buffer memory work in tandem, a short shooting interval of
approx. 1.8 sec. is achieved.
The PowerShot G1’s buffer memory capacity is approximately four times that of the PowerShot S20, enabling high
performance continuous shooting. Approximate 10 images at Large/Fine mode can be taken, with a maintained shooting
speed of 1.7 images per second.
Moreover, operations such as camera start-up, high-speed search mode (during playback), image enlargement, and image
scrolling which normally require a lot of processing time can be executed swiftly, thanks to the digital signal processing
IC’s high-speed compression and decompression operations.
-Optical viewfinder with dioptric correction
Usually, a camera’s viewfinder diopter is set to match the nearest and farthest distances that the eyes of most people can
clearly see. However, for near-sighted, far-sighted, and presbyopic users, dioptric correction is necessary to see such
objects clearly.
The PowerShot G1’s optical viewfinder enables dioptric correction to suit various eyesights of users.
-Shutter-release sound like a film-based camera
The PowerShot G1 provides a shutter-release sound after the picture is taken (when the exposure ends). The subject can
thereby hear when the picture is taken even in noisy environments. The shutter sound is based on the WAVE format. The
sound volume can be adjusted from 0 to 5 as necessary when in noisy areas.
Note :
The beep sounds at the end of shooting, if users set shutter sound to OFF.
Shutter release time
Shooting interval
using EVF
Approx. 0.07sec.
Approx. 1.8sec.
using OVF
Approx. 0.04sec.
Approx. 2.4sec.
-
The above times will vary depending on the subject.
- The above does not apply to special techniques such as
slow speed shutter.