15mp = empty magnification

Started Oct 3, 2008 | Discussions thread
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gml
gml
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15mp = empty magnification
Oct 3, 2008

The Imaging Resource have just published their (first) 50D samples.
Here's a comparison between the 50D, 450D, and the 5D:

50D (15mp)
http://www.imaging-resource.com/PRODS/E50D/FULLRES/E50DhSLI00100.HTM

450D (12mp)
http://www.imaging-resource.com/PRODS/XSI/FULLRES/XSIhSLI0100.HTM

5D (12mp)
http://www.imaging-resource.com/PRODS/E5D/FULLRES/E5DhSLI0100.HTM

Observations:
-) the 50D image (15mp) does not have more detail than the 450D image (12mp)
-) the 50D image is softer than the 450D image
-) the 50D image (15mp) has less detail than the 5D image (12mp)

The last point is also confirmed in this 50D vs 5D comparison:
http://forums.dpreview.com/forums/readflat.asp?forum=1019&thread=29567599

Unfortunately, this is totally expected.
People see 15mp and think big prints and room for cropping.

The reality, though, is that 15mp on a crop camera is beyond the resolving power of most commercial lenses, so these 15mp are nothing more than empty magnification (aka digital zoom).

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