Canon EOS 20D Digital, Руководство по обслуживанию

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2) Internal construction and location of major components
While the EOS 20D's basic performance is the same or better than the EOS
10D's, the design and production know-how gained from the EOS DIGITAL
REBEL/EOS 300D DIGITAL have made the camera smaller and cheaper.
The parts count is shown in Table 012.
(1) Smaller and lighter
• The following components have been optimized for the APS-C-size image
sensor: Compact shutter unit, mirror box, main mirror, pentaprism,
focusing screen, and viewfinder optical unit.
• Smaller and lighter due to the changed configuration of the stainless steel
chassis.
(2) Cost reduction measures
Despite much better performance
specifications (approx. 8.20-megapixel
CMOS sensor, 5 shots/sec. continuous
shooting speed, high-speed shutter, and
nine AF points), the cost was reduced
thanks to the following:
•
DIGIC II and the newly-developed,
dedicated ADIC* and TG* (shrinking the
electrical circuits).
•
Fewer mechanical and electrical parts.
Technical Information
26
Fig. 032 Exterior covers and internal construction
Item EOS 10D
21
320
878
28
25
1272
186
1458
Optics
Mechanical parts
Electrical parts
Circuit boards
Lead wires
Total (Official)
Screws and washers
Total
Table 012 Parts Count
* The shutter unit is counted as 1 part.
* The DC/DC converter is counted as one part.
* The E-ring is counted as a washer.
* The official total excludes the screws and washers.
1360
167
1193
19
27
826
301
20
EOS 20D