Canon PowerShot G1, Service Manual

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G7
[High Image Quality]
-High resolution (2,048 (H) X 1,536 (V)) with 1/1.8-inch 3.34M pixel CCD
Using photo ink and the smallest ink droplets possible (4 pl), the Canon BJ printers BJ F850 (BJC-8200/BJC-8200Photo)
offers 1,200 dpi, a quality sufficient enough to reproduce A4 print size (8" X 10") photo quality images. The PowerShot
S10 (on sale Fall 1999) and IXY DIGITAL (on sale May (June) 2000), both employ a 2.11-megapixel CCD, achieving a
resplution of 4.7 lp/mm, adequate for postcard-size prints when printed out on the 300-dpi dye-sublimation CD-300
Digital Printers. This resolution is not sufficient for A4-size prints.
Images taken with the PowerShot G1, having a 3.34-megapixel CCD, can be printed with the BJC-F850 for acceptable
print quality A4-size (8” X 10”) prints.
Note: lp/mm (line-pair mm) : Resolving power is expressed in the number of pairs of black and white lines per milimeters.
-Macro mode allows close-up photography up to 6cm at the wide-angle end, 20cm at telephoto end.
PowerShot G1 allows you to perform close-up photography up to 6cm from the subject at the wide-angle end. The
maximum shooting area is 82 X60mm at the wide angle end and 84X62 mm at the telephoto end.
If you attach the optional close-up lens with macro mode, the shooting area is 50X38 mm at the telephoto end.
-Wireless controller
The dedicated wireless controller can be used to operate the PowerShot G1. Press the DRIVE button to set the camera to
the Self-timer mode. Then you can use the wireless controller to take still pictures, zoom the lens to the wide or telephoto
end (Movie is shooting operation only) and display button, operate the Omni Selector (image forward and scroll), movie
playback, display button, switch between single and multiple image playback and enlarge the image during playback.
Note: When you use the wireless controller to take pictures, the picture is taken about 2 sec. after you press the wireless controller’s
shutter button. This delay is provided in case you are also to be in the picture.
Table 2-4 The shooting area maximum magnification.
The shooting area
maximum magnification (mm)
PS G1 PS S20
IXY DIGITAL
82 X 60
(Wide angle end, 6cm)
102 X 76
(Wide angle end, 10cm)
76 X 57
(Telephoto end, 12cm)
50
X
38
(Telephoto end, 12cm)
PS G1
(in attaching 250D 58mm)
Acceptable level of pixel count (3.5lp/mm)
*Conventional photo's level of pixel
count (7 lp/mm)
Approx.
1.1M pixels
Approx.
1.5M pixels Approx.
3.1M pixels
Approx.
3.15M pixels
(Recording pixels)
BJ-F850
Approx.
4.4M pixels Approx.
6M pixels Approx.
12.4M pixels
PS G1
Postcard size
5”
X
7” 8X10 inch (A4)
Fig. 2-3 Optimum pixel count for print size