I just came across a nice page that describes the limiting effect of diffraction - in particular in case of very small apertures. http://www.cambridgeincolour.com/tutorials/diffraction-photography.htm
The same site has a page describing MTF of lenses and how to understand it: http://www.cambridgeincolour.com/tutorials/lens-quality-mtf-resolution.htm This website has several nice pages related to photography techniques in general. Igor -- PDML Pentax-Discuss Mail List [email protected] http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
