Canon PowerShot G5 Service Manual - Page 13

Features, W x H Pixel, Large, x 1944, Medium 1, x 1200, x 768, Small, x 480

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2 Features 2-1 High Image Quality -High-precision, approx. 5-effective-megapixel CCD (Total of approx. 5.3 megapixels) Number of recording pixels : 2592 x 1944 The PowerShot G5 incorporates a CCD sensor with approx. 5.0-mega camera effective pixels in camera mode (total of approx. 5.3-mega pixels), giving it the greatest number of pixels in the compact camera class. This CCD adopts narrower pixel pitch in order to achieve a size almost as small as that of the PowerShot G3's CCD. High sensitivity and a high S/N are nonetheless achieved by the newly developed structure and driving system of CCD. Table 2-1* shows the calculated resolution for each print size, given that the PowerShot G5 will use 2592 x 1944 recording pixels in large mode. As a result, 5 x 7"(cabinet) size will, for example, produce a print with a resolutions of 6.4 lp/mm, which is close to the limits of visual acuity in humans. Even A3 size will produce a print with a practical resolution of 2.5 lp/mm. Table 2-1 Print Size and Resolutions Produced by thePowerShot G5 (Calculated Values) * The resolutions indicated are derived from the number of pixels in the CCD; in actual practice, these resolutions will be affected by the printer resolution. * A couple composed of a white and black line is counted as one. Large Medium 1 Medium 2 Small W x H (Pixel) 2592 x 1944 1600 x 1200 1024 x 768 640 x 480 Table 2-2 Recording Pixels by the PowerShot G5 1-9

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1-9
2 Features
2-1 High Image Quality
-High-precision, approx. 5-effective-megapixel CCD (Total of approx. 5.3 megapixels)
Number of recording pixels <still image>: 2592 x 1944
The PowerShot G5 incorporates a CCD sensor with approx. 5.0-mega camera effective pixels in camera mode
(total of approx. 5.3-mega pixels), giving it the greatest number of pixels in the compact camera class.
This CCD adopts narrower pixel pitch in order to achieve a size almost as small as that of the Power-
Shot G3’s CCD. High sensitivity and a high S/N are nonetheless achieved
Table 2-1* shows the calculated resolution for each print size, given that the PowerShot G5 will use 2592 x
1944 recording pixels in large mode. As a result, 5 x 7”(cabinet) size will, for example, produce a print
with a resolutions of 6.4 lp/mm, which is close to the limits of visual acuity in humans. Even A3 size
will produce a print with a practical resolution of 2.5 lp/mm.
Table 2-1 Print Size and Resolutions Produced by thePowerShot G5 (Calculated Values)
W x H (Pixel)
Large
2592 x 1944
Medium 1
1600 x 1200
Medium 2
1024 x 768
Small
640 x 480
Table 2-2 Recording Pixels by the PowerShot G5
* The resolutions indicated are derived from the number of pixels in the CCD; in actual practice, these resolutions
will be affected by the printer resolution.
* A couple composed of a white and black line is counted as one.
by the newly developed
structure and driving system of CCD.