----- Original Message ----- From: "mike wilson" <[EMAIL PROTECTED]>
>> Based on Print sizes and Megapixels, I made a little test with my film >> scanner. I scanned an image that had a huge amount of detail. First at >> 5400 >> dpi and then 2700 dpi. The 2700 was downsized to match a 6mp image and >> then >> upsized to match the original. You can see the results here: >> >> >> http://www.users.on.net/~bobrapp/test/pictures.html > > I'm not sure what this test does. If you don't start with two images of a > scene, one film, one RAW sensor data, what is the point? > > I see the "home" link really _does_ mean "home". 8-) > I was trying to demonstrate that detail cannot be restored or created when upsizing an image. Only additional data (higher resolution image) can create that. Apart from that, the upsized image can make the scene look like a plastic model. When I increase a RAW file with ACR, chromatic aberrations become a real problem - especially in areas of high contrast. I don't find that a problem with film. Cheers, Bob -- PDML Pentax-Discuss Mail List [email protected] http://pdml.net/mailman/listinfo/pdml_pdml.net
