What is FF (full frame?) and MFG (Medium Format ...?)?? I will soon be posting tests (as a PAW): My Penax lenses and neg. film scanned to 1200, 3200 and 6400 ppi - vs. my SONY F717 (5MP) camera, using a 6x8mm chip. I shot the same scene, at same ISO (200) using the same (equivalent) focal lengths on at the same time. It's allready clear, that the resolution of the 3200 and 6400 scans are higher, than those of the 5MP camera. No questions about that. But the big question is: Are the pictures any better? Unfortunaltly www.fotopic.net doesn't work right now. But I'll get back to that shortly.
BTW: Why does a 72 ppi computer screen picture seem as sharp/have as high a resolution as a 300 dpi print? All the best Jens Bladt mailto:[EMAIL PROTECTED] http://hjem.get2net.dk/bladt -----Oprindelig meddelelse----- Fra: J. C. O'Connell [mailto:[EMAIL PROTECTED] Sendt: 10. marts 2004 00:48 Til: [EMAIL PROTECTED] Emne: RE: *ist D sensor and 35mm lens resolution I dont know about your last statement, the higher the density (smaller the circuits) the more defects will occur in MFG, and hense lower yield/higher cost for a much denser chip of the same area. JCO ---------------------------------------------------------------------------- J.C. O'Connell mailto:[EMAIL PROTECTED] http://jcoconnell.com ---------------------------------------------------------------------------- -----Original Message----- From: Rob Studdert [mailto:[EMAIL PROTECTED] Sent: Tuesday, March 09, 2004 7:35 PM To: [EMAIL PROTECTED] Subject: RE: *ist D sensor and 35mm lens resolution On 9 Mar 2004 at 18:24, J. C. O'Connell wrote: > Oh no, very mistaken! Yes of course a 14mp FF sensor will be better than > a 6Mp FF sensor in terms of resolution, but a 6MP FF sensor is DEFINATELY better > than a 6MP APS sensor, not only will the image be sharper due to lens > limitations, > the FF image will be less noiser due to larger pixel area. The only > downside > to FF vs. APS for a given Mp is cost. John, you're not listening, many of us are very happy with the noise performance and latitude afforded by our puny APS sized 6MP sensors, many of us however would like full frame coverage. The cost is mainly a function of the substrate size not the density, CCD sensors of any density have huge structures compared with most any other type of VLSI semiconductor in production. In other words the cost to produce a 6MP or 14MP FF sensor is going to be similar. 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
