
sensor cleaning to remain one of my often-used menu options. Canon's 40D White Paper
references the 40D's sensor cleaning system to that of the 1D Mark III's with some changes.
I'm very pleased with my sensor cleanliness so far - but ever skeptical.
Canon's specifications for the 40D are listed as 5.7 x 4.2 x 2.9" (145.5 x 107.8 x 73.5mm) -
practically identical to the 30D, but my dial calipers say it is .2" (5mm) higher. Side by side, it
is obvious that the 40D is slightly taller though the difference is not of significance. I
haven't noticed the 40D's slight weight gain over the 30D when switching between these two
bodies. What I did notice was the improved shape of the 40D's grip - primarily a deeper
cut finger groove. I like this change a lot - it fits my hand better and give me a more-sure
rip.
Model Body Dimensions Weight
Canon EOS 400D Digital Rebel XTi 5.0 x 3.7 x 2.6" (127 x 94 x 65mm) 18.0 oz (510g)
Canon EOS 350D Digital Rebel XT 5.0 x 3.7 x 2.6" (127 x 94 x 64mm) 17.1 oz (485g)
Canon EOS 40D 5.7 x 4.4 x 2.9" (145.5 x 111 x 73.5mm) 26.1 oz (740g)
Canon EOS 30D 5.7 x 4.2 x 2.9" (144 x 105.5 x 73.5mm) 24.7 oz (700g)
Canon EOS 20D 5.6 x 4.2 x 2.8" (144 x 106 x 72mm) 24.2 oz (685g)
Canon EOS 5D 6.0 x 4.4 x 3.0" (152 x 113 x 75mm) 28.6 oz (810g)
Canon EOS 1D Mark III 6.1 x 6.2 x 3.1" (156 x 157 x 80mm) 40.7 oz (1,155g)
Canon EOS 1D Mark II N 6.1 x 6.2 x 3.1" (156 x 158 x 80 mm) 43.2 oz (1225g)
Canon EOS 1DS Mark III 6.1 x 6.3 x 3.1" (156 x 159.6 x 79.9mm) 42.5 oz (1205g)
Canon EOS 1DS Mark II 6.1 x 6.2 x 3.1" (156 x 158 x 80 mm) 42.9 oz (1215g)
ou can see a good part of the Canon EOS 40D's weight in the photo above. That is a tough
stainless steel and magnesium alloy frame. It gives the 40D a very solid feel and good
strength/rigidity to go with it.
New to the 40D is partial weather sealing. Basically, the battery and memory card
(CompactFlash) doors have some modest sealing. This is not the complete sealing that
Canon's 1-Series cameras receive. You will want to avoid getting the 40D wet.
ou are looking at an XTi/400D over a 40D in the comparison picture above. Take note of the
large number of options available on the 40D's shooting mode dial. Fifteen options ranging
from the
reen square (the camera takes care of all settin
s - point & shoot mode) to fully
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