> Lemme get this straight: > > From 36*24mm, you need to enlarge roughly 5 times to get a 5*7. > From 24*16mm - surely you need to enlarge by 7 times to get the same > 5*7? > > What has this to do with pixels?
The "size" of a digital sensor isn't strictly dimensional. The number of pixels determines the real "size" of the image. If you "enlarge" BELOW that size, then you have to throw information away. This leads to a property of digital files that really confounds traditional photographers--which is that, in some cases, BIGGER prints have MORE detail than smaller ones. Not more apparent detail--more actual resolution. Here's a good basic reference: http://www.luminous-landscape.com/tutorials/understanding-series/und_resolut ion.shtml --Mike "The life of an intellectual should be a permanent reproach to the idea that knowledge has to be handed down to us from authority." (unattributed: unidentified TV talk show guest) Find out about Mike Johnston's unique photography newsletter, "The 37th Frame," at http://www.37thframe.com.
