On 9 Mar 2004 at 16:29, J. C. O'Connell wrote: > I agree with John on this. It is very obvious that unless you have > lenses with infinite resolution (and you dont), that capturing > ALL of the image from a 50mm lens is going to be sharper than > capturing a center crop from a 33mm lens. ( 1.5 crop factor sensor) > This is assuming both the 50mm and the 33mm have the same lpmm > and it is not infinite.
I don't subscribe to this theory, I believe that your assumption regarding lens resolution limits is flawed. The fact is that most lenses have an aerial resolution many times higher than the theoretical maximum resolution of the sensor therefore their part in the overall system resolution dwindles into virtual insignificance. If a FF sensor and an APS sensor have the same number of pixels (differing pixel sizes) then there will be no absolute difference in the sharpness of the final print when good quality lenses of the appropriate FL are used to produce the same AOV on each sensor. The advantages of a larger pixel site area are greater sensitivity and lower noise, ie greater capture latitude. Cheers, Rob Studdert HURSTVILLE AUSTRALIA Tel +61-2-9554-4110 UTC(GMT) +10 Hours [EMAIL PROTECTED] http://members.ozemail.com.au/~distudio/publications/ Pentax user since 1986, PDMLer since 1998
