Hong Kong was one of the first places to get the new 40D and I managed to get one soon after it hit the streets. I have previously written some initial impressions and did some test shots. I will leave the comprehensive technical review to publications like dpreview.com. I will be mainly concentrating on the design changes compared to the 20D/30D and new features and improvement in the 40D. After hearing many comments and questions, I hope this review will answer most of them. I will be mainly using my old 20D for comparison purposes. However, the 30D is identical to the 20D in many ways other than a larger LCD and addition of spot metering, most differences between these 2 cameras are very minor. So most of the comparison will apply to the 30D as well.
The main changes and improvement with the 40D according to Canon are:-
1. 10.1MP APS-C CMOS sensor, compared to the 8.2MP APS-C CMOS sensor in the 20D/30D.
2. 3 or 6.5fps continuous shooting, compared to 3 or 5 fps in 30D and 5fps in 20D. canon also claimed 30% greater focusing speed with the 40D.
3. 17 jpeg or 17 RAW burst, compared to 30 jpeg or 11 RAW with 30D and 23 jpeg or 6 RAW with 20D.
4. New AF sensors, 9 sensors, all cross-type, compared to 9 AF sensors only center sensor is cross-type in 20D/30D
5. Digic III image processor, Digic II in 20D /30D
6. 3″ LCD 230,000 pixels, 2.5″ 230,000 pixels LCD
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