5D vs 20D for cropping

[dwdallam]

Comparing the 20D and the 5D again, how much would you be able to crop off of the 5D in inches before you got down to a 20D's pixel count? I mean how much more room for cropping will you gain in inches from say a 12 x 18 print? 1/2 and inch total, one inch, 2 inches, etc.?

[jani]

Uhm, isn't this just a question of comparing the pixel dimensions of the two cameras?

Go to either Canon USA's web pages for the Digital SLRs, or to DPReview's excellent product information pages.

[Ray]

Why would you want to crop to a pixel count? Usually you crop an image for compositional reasons, but if you insist on getting a 5D image containing the same number of pixels as a 20D image, just go to 'image size' in PS and reduce the dimensions of the 5D image till you get 24MB.

[dwdallam]

Well, to reply to both of you, I'm trying to figure out how much more I can crop using the 5D and continue to get "at least" 20D quality regarding pixel density and resolution. The reason is that for 12 x 18, 8.2 MPs is pushing the quality envelop, although I have seen 20 x 30s printed from the 20D that look acceptable, good even. But at 20 x 30, you can't lose too much more pixels using a 20D and have the results be acceptable.

So, if you resize your RAW image to 12 x 18 inches, I'm wondering how much more image you have to play with crop wise using a 5D and not going below the 20Ds resolution and pixel count.

So you can see this question is really about cropping for composition and artistic reasons.

[jani]

Seeing as you're not willing to dig up the data yourself:

5D: 4368x2912
20D: 3504x2336

I hope you can do can do simple maths.

[dwdallam]

Seeing as you're not willing to dig up the data yourself:

5D: 4368x2912
20D: 3504x2336

I hope you can do can do simple maths.
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Yeah that's easy enough. Thanks.