Technical Description; Cmos Sensor Imaging Element - Canon EOS D60 Service Manual

1.TECHNICAL DESCRIPTION

1.1 CMOS sensor imaging element

1) Major features
The camera has a Canon-developed, ultra-
large, single-piece CMOS (complementary metal
oxide semiconductor) sensor to give the camera
the best resolution in its class. Primary-color
filters are used to obtain accurate and vibrant
color reproduction. Except for the smaller pixel
size, the CMOS sensor's size is the same as the
EOS D30's. The major specifications are shown
in Table.
The imaging element now has more pixels.
The area of each pixel is about half that of
the pixels on the EOS D30's imaging
element. This smaller size makes the imaging
element less sensitive. To compensate, the
design and process have been revamped so
that the aperture is larger and the micro
lenses have more efficient convergence.
Thus, ISO speeds of 100, 200, 400, 800, and
1000 are possible.
2) Picture coverage
As with the EOS D30, the effective
picture coverage (angle of view) will be
equivalent to a lens with 1.6 times the
EF lens' marked focal length.
3) Noise reduction of imaging element
With the CMOS sensor's dark current
reduction and the image-reading
circuit's noise reduction, the image
recording is clear even for long
exposures. As shown by Fig.2-4, it even looks better than the EOS D30's image
taken in the noise reduction mode. Thanks to this major improvement, the EOS
D60 does not require noise reduction for long exposures as the EOS D30 did, so
C.Fn-1 has been eliminated.
This improvement also has helped enhance the normal photographic sequence.
As a result, the shutter-release time lag is also more stable.
Fig.2-4 compares images taken at the 30-sec. shutter speed.
Fig. 2-1 CMOS sensor (actual size)
CMOS Sensor Specifications
Fig. 2-2 Picture coverage comparison (actual size).
2-1
Part 2: Technical Information