Archived posting to the Leica Users Group, 2004/02/22
[Author Prev] [Author Next] [Thread Prev] [Thread Next] [Author Index] [Topic Index] [Home] [Search]You should try it for yourself, even with a loupe the difference between 300 dpi and 600 dpi is not great, I use 300. Frank On Sunday, February 22, 2004, at 03:27 pm, animal wrote: > > >> >> On Feb 22, 2004, at 1:49 AM, Frank Dernie wrote: >>> Does one often need/fully exploit the potential of 35mm film on a >>> Leica? I only exploited the full potential in the darkroom on my >>> biggest prints, most of the time the resolution superiority was just >>> wasted on a print of only 10x8". >> >> It is generally excepted that 360 ppi is a reasonable maximal printing >> resolution, that is increasing printing resolution beyond this does >> not >> generally yield better prints. Assuming an 8x10" print, that is 10 >> megapixels. Consequently, although 8x10s can look fine with 6 >> megapixels, the optimal resolution for 8x10 is 10 megapixel (assuming >> zero cropping). >> >> Thats for an unmanipulated image, if you are going to run USM etc. on >> the image it is a good idea to start with a higher resolution -- to >> minimize the introduction of digital processing/blocking artifacts. >> That is why I scan at ~40 megapixels. >> >> The other issue is the difference between shape and distribution of >> pixels vs. film grains. Rectangular pixels when enlarged are not >> pleasing to the eye. Film grains have a more irregular shape and more >> random spatial distribution and when visible are *much much* more >> pleasing. That's why photoshop filters exist to *add* the appearance >> of >> film grain to digital images, and why it is often recommended to *add* >> gaussian noise to a digital image ... this "randomness" (which is a >> characteristic of film) reduces the appearance of digital "blocking" >> artifacts. >> >> Enlarged film grain is very often not a terrible problem -- that is >> why >> folks like Tri-X and can accept 35mm enlargements of 16x20 or greater. >> >> On the other extreme, if you need to be convinced about the potential >> benefits of higher resolution, look at a good 8x10 contact print (i.e. >> from an 8x10 negative). As much as I like my Leica, these 8x10s have a >> characteristic look that cannot be equaled in smaller formats. I can't >> explain the neural physiology or physics behind it, but it just *looks >> different*. >> >> Jonathan >> >> -- > Well, i have read that good eyes can easily spot the difference upto > 600 > dpi.So my guess is that if people can get close to let,s say an > architecturial photo they,ll spot the difference.Probably as long as > the > viewing angle is the same as it was with the camera it wont > matter.simon > jessurun > > -- > To unsubscribe, see http://mejac.palo-alto.ca.us/leica-users/unsub.html > - -- To unsubscribe, see http://mejac.palo-alto.ca.us/leica-users/unsub.html