Canon PowerShot G3, Руководство по обслуживанию

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- Slave function of external flash units can be used
In order to improve the lighting around the subject such as for studio shots, fill flashes are often used. In this
case, the slave unit used for fill flashes detects light from the main flash and sends a trigger signal to the fill
flashes. However, a problem can occur in the normal course of flash photography if a pre-flash is used to adjust
the lighting,
because the slave unit will detect this light and
fire the fill flashes.
To prevent this problem, the PowerShot G3
is equipped with a mode (Flash Adjust-Manual)
that does not use pre-flashes
when using external (fill) flashes. Using this
function avoids the problem of pre-flashes
triggering fill flashes because pre-flashes are
not used. In this case, the strength of the main
unit flash (or flash mounted on the main unit)
is set manually.
- Two custom photo mode positions are included on mode dial to allow users to preset photo
parameters freely
On the PowerShot G3, two positions on the mode dial are reserved for “custom” modes so that users can store
their preferred modes and parameters. In this way, it is not necessary to adjust settings for each photo.
- “Custom” position, allowing users to preset parameters, added to the photo effect positions as
a photo effect (vivid color, neutral color, low sharpening, sepia, black and white)
The PowerShot G3 adds a “custom” position to the photo effect positions so that users can define their own
preferred image effects. In the custom position, the contrast, sharpness and color intensity can be selected and
saved independently from three levels — (–), 0 and (+).
- Settable display times for rec review (two to 10 seconds)
The PowerShot G3 is specified so that the image-display time* in rec review (confirmation of recorded image)
can be set between 2 and 10 seconds in one second intervals. In this way, users can select a duration to suit
their applications.
* “Off” can also be set
Table 2–3 Description and effects of image effect settings
Figure 2–5 Conceptual diagram of slave flash exposure
Photo Effect Description Effect
Vivid color Emphasizes contrast and color intensity Produces a vivid and sharply-defined image
Neutral color Reduces contrast and color intensity Produces a subdued, plain image
Low sharpening Reduces edge’s emphasis Produces a mild image
Sepia Adds sepia toning to the color information Creates an old-fashioned appearance
Black & White Sets the color gain to "0," producing a black & white image Produces a binary image with sharp contrast; used for text
Custom Contrast, sharpness and color set by users Produces image effects with user’s intention
Additional Flash
(Available slave function)
Additional Flash
(Available slave function )
Camera Flash