On 4 Nov 2004 at 7:28, Jens Bladt wrote: > 1800?? > Strange figure. There's 3024 pixels (RAW) covering a little less than one > inch. How is that 1800 line pairs?
Remember that the each pixel records the luminance of either red, green or blue, the luminance of any other colour at each point is a calculated guess. Interpolating to produce an image with greater final pixel dimensions will provide no more data it just produces transitional values pixel to pixel that are calculated based on the measured data. Regardless of the factor of over- sampling (interpolation) you will still end up with approximately the same actual line pairs per mm but they will be spread over more pixels. > So, as far as I'm concerned, a 200 ASA superia and a 35mm pentax camera and lens > can't really outperform a 5 MP digital camera. The following article should interest you: http://pws.prserv.net/varney/iso/digflmres.htm#top 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
