On 14 Dec 2002 at 11:50, T Rittenhouse wrote: > Most top quality lens have a resolution of around 72 lpm on film at normal > contrast levels (the higher resolutions you hear spouted about are for high > contrast or arial images, how many of us photograph line drawings) reguardless > of format. Highend sensors are near that resolution right now. The next > generation should exceed it.
Hi Tom, It's good to see you back. I believe that your comparison of system resolution (lpmm on film) vs lens resolution (projected) is a little flawed as most lenses can resolve better than 72 lpmm optically (you can't realistically cite a lens film/comparison as reference to absolute lens resolution). Even the DCS Pro 14n will only provide 72 pixels per mm in the file. Since there is a requirement for a matrix of four pixels to produce one 3 colour image file pixel and at least (forsaking Nyquist sampling limitations) two adjacent pixels to resolve a line the actual effective resolution is far lower than 72lpmm. Cheers, Rob Studdert HURSTVILLE AUSTRALIA Tel +61-2-9554-4110 UTC(GMT) +10 Hours [EMAIL PROTECTED] http://members.ozemail.com.au/~distudio/publications.html
