Canon EOS 400D Digital, Руководство по обслуживанию

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Technical Information
1
1．TECHNICAL DESCRIPTION
1.1 Image sensor・CMOS sensor
１）Overview
The large CMOS sensor (Fig. 001) developed and manufactured by Canon has enabled
the camera to attain the top overall performance in its class. It features high resolution
(approx. 10.10 effective megapixels), wide ISO speed range (ISO 100-1600), and low noise.
Table 001 CMOS sensor specifications
Specification
EOS D REBEL XTI /
EOS 400D D
EOS KISS DIGITAL N
Effective pixels [approx.]
3904×2598
(Approx. 10.10 million)
3472×2312
(Approx. 8.00 million)
Total pixels [approx.]
3996×2622
(Approx. 10.50 million)
3520×2328
(Approx. 8.20 million)
Effective sensor size [mm] 22.2×14.8
Pixel size [μm] 5.7 6.4
Color filter RGB primary color filter
Aspect ratio 3：2
２） Wide-range ISO speed and low
noise
Thanks to the following new
technologies, the ISO speed
range is the same as the EOS
KISS DIGITAL N's even with the
pixel size of 5.7μm square.
(Table 002)
⑴At high ISO speed
The spacing between the on-chip microlenses is now about half that of the EOS KISS
DIGITAL N. This improves the light convergence. Also, by optimizing the output amplifier,
low noise is attained. And as with the EOS KISS DIGITAL N, the second-generation, on-
chip, noise-reduction circuit minimizes random noise and removes fixed-pattern noise. As
a result, the same S/N ratio and ISO 1600 as with the EOS KISS DIGITAL N are attained.
⑵At low ISO speed
With finer processing and optimized photo diode construction, the photo diode is able
to accumulate a good amount of light. The dynamic range at the low ISO speed is on par
with the EOS KISS DIGITAL N's dynamic range attaining an equivalent of ISO 100.
３）Faster speed
With the two-channel, high-speed clock reading and improved performance of the output
amp, signal reading is faster with low noise. The continuous shooting speed of 3 fps is the
same as the EOS KISS DIGITAL N's.
Fig. 001 CMOS sensor
Table 002 CMOS sensor specifications
Camera ISO Speed Pixel Size [μm]
EOS D REBEL XTI /
EOS 400D D
100 - 1600 5.7
EOS KISS DIGITAL N 100 - 1600 6.4
EOS 30D 100 - 1600・3200 6.4
EOS-1D Mark II N 50・100 - 1600・3200 8.2
EOS-1Ds Mark II 50・100 - 1600・3200 7.2