Canon PowerShot G2 Service Manual page 9

2-2 Full Features
l Manual settings (aperture-priority AE, shutter speed-priority AE, manual focus*, manual expo-
sure, flash compensation, exposure compensation)
The PowerShot G2 includes several manual setting functions similar to those in the PowerShot G1. The
manual focus function in particular has been made easier to use by displaying a distance guide in the MF
indicator on the LCD monitor, and by enlarging the center of the image (centered on the AF frame, when the
AF frame is selected) while the manual focus function is being used.
In addition, the auto flash mode and the auto red-eye reduction mode are now available when selecting a
program.
l Color effect positions (Vivid color, Neutral color, Sepia, Black & White) settable as picture-taking modes
Continuing in the tradition of the PowerShot G1, the PowerShot G2 offers not only "auto" as a picture-taking
mode, but also the "creative zone" and the "image zone". Furthermore, the "image zone" includes a new
offering, "color effect positions (vivid color, neutral color, sepia, black & white)." Table 2-3 describes each
setting and its effect.
Color Effect
Vivid color Emphasizes contrast and color intensity
Neutral color Reduces contrast and color intensity
Sepia Adds sepia toning to the color information
Black & White Sets the color gain to "0," producing a black & white image Produces a binary image with sharp contrast; used for text
Table 2-3 Descriptions and Effects of Color Effect Positions
l Movie recording and playback with sound (The number of pixels used for recording can be se-
lected by selecting one of two formats: QVGA or Q
The PowerShot G2 is capable of shooting 15 frames of an image per second as a movie, with audio. The
number of pixels recorded in each frame depends on the format: QVGA (320 x 240) and Q
The recording duration is 30 seconds with QVGA and 120 seconds with Q
this fashion, the values for the focus, exposure, WB, and zoom position that are in effect at the beginning of
shooting are used until shooting ends. The recording time is also displayed on the LCD monitor while the
movie is being shot.
The movie is stored in an AVI file, with the image data stored in Motion JPEG format and the audio stored in
WAVE format (monaural). Due to limitations on the number of CCD pixels, the ability to record movies in
VGA size, a capability that was implemented in the IXY DIGITAL 300/200, is not implemented in the PowerShot
G
2.
* If the amount of free CF capacity is less that the buffer capacity, recording continues for the length of time
determined by the free CF capacity.
* After the buffer becomes full, data is written to the CF. It is not possible to shoot the next image while data is being
recorded in the CF.
l AF modes that permit switching the ranging points (three points) (continuous AF, single AF)
As in the PowerShot G1, the PowerShot G2 permits switching of the AF mode between "continuous" and
"single." The user can select either, depending on the application at hand.
In regards to the AF ranging points, it is now possible to select either the conventional single center point, or
to select three points. If three points are selected, then regardless of whether continuous AF or single AF is
selected, the user can select the distance ranging point from among these three points in accordance with the
composition of the image that is being shot. This capability eliminates the need, when the subject is not in the
center of the image, to first bring the subject into focus at the center of the image and then reframe the shot.
Ty pe
1-point AF
Shooting a picture is easy
3-point AiAF Subject w ill be in focus, ev en if not in the center of the image The camera could focus on an object other than the subject
Selectable ranging point AF Subject w ill be in focus, ev en if not in the center of the image It is necessary to select the distance ranging frame
Table 2-4 Advantages and Disadvantages of Different Types of AF (Ranging Points)
* This is not the same as the 3-point ranging AiAF that is used in the IXY DIGITAL Series
Description
Adv antages
1-8
Effect
Produces a vivid and sharply-defined image
Produces a subdued, plain image
Creates an old-fashioned appearance
VGA)
2
2 VGA. When shooting a movie in
Disadv antages
Subject w ill not be in focus if not in the center of the image
VGA (160 x 120).
2