Perhaps true, but: 1. The printer will interpolate the image files to make larger prints from jpegs. 2. No Photgraphic paper can really resolve/print 100 lpm anyway. 3. The lack of grain helps too, I guess 4. Only the very best lenses can actually resolve 100 lpm, most probably more like 50 lpm
30 lpm is equal to 60* pixel pr. mm or 24x30x2 = 1440 pixel for a 24mm sensor. * = One lpm being "one black and one white line" (According to USAF target group 0 pair 1 which is app. 1mm) So, I guess a SONY 3008 pixels 24mm sensor can resolve something like 3008/2/24 = 62 lpm equal to app 3200 ppi. That's not so bad after all, is it? I know I could never get more out of a 35mm neg, if I scanned to more than perhaps half of that - i.e. 1600ppi! I know this is just basic math, that doesn't really have anything to do with the world of electronics (which most of the time is mumbo-jumbo to me, anyway). But nevertheless - a 62 lpm lens can still do a nice job on film, right? Lot's of Pentax lenses are not capable of doing 100 lpm this on let's say a 400 asa film at f5.6, hand held at 1/125 :-). Forgive my simple reasoning - but it's really not that far from what we are in fact experiencing. I mean - look at the digital images/prints. They are not all that bad, are they. Jens Bladt mailto:[EMAIL PROTECTED] http://hjem.get2net.dk/bladt -----Oprindelig meddelelse----- Fra: William Robb [mailto:[EMAIL PROTECTED] Sendt: 3. november 2004 04:29 Til: Pentax Discuss Emne: Re: USAF target and resolution tests ----- Original Message ----- From: "J. C. O'Connell" Subject: RE: USAF target and resolution tests > On 2 Nov 2004 at 19:32, Mishka wrote: > >> something doesn't add up -- "great" 11x14 prints and 30 lpmm >> system >> resolution cannot be true at the same time. The lack of grain goes a long way towards saving digital from itself. > > Yes it can if you don't know what "great" looks like. > > Go see some nice 11x14 BW contact prints and then decide what > the word "great" should be reserved for. The clarity and > "rightness" of THOSE 11x14s is what I would call "great" > and you don't need a lupe or rub your nose on it to see it. Right you are. William Robb
