Archived posting to the Leica Users Group, 2004/02/16
[Author Prev] [Author Next] [Thread Prev] [Thread Next] [Author Index] [Topic Index] [Home] [Search]B. D. Colen wrote: >Actually, someone has done such film to mgp approximations and come up >with, among other things, the fact that at between 5-6 mgp you get >results equal to that of 35 mm tri-x. Which is all I care about. ;-) > > That would be about right. Just curious, what is the big attraction for Leica glass given Tri-X film? Is is the large maximal aperatures? Relatively small sizes of the lenses? Trophy factor? The supposed high "local contrast" can be *easily* mimicked using Photoshop USM btw, e.g. use 20 radii at ~ 20%. For me, the large maximal aperature at a given lens weight is a big factor. I mainly shoot Delta 100 and consequently I'd need a very expensive camera to equal the film. On the other hand my Minolta 5400 scanner allows me to make 40 megapixel 16 bit scans which I find a great way to let digital darkroom techniques and traditional photography co-exist. Remember to be careful about believing such tests -- again the folks who told us that 44khz CD quality was "perfect" are now touting 96 khz for consumer audio recordings and 196 khz for professional recordings. Extrapolating suggests that one might *actually* need a 4x factor increase in the number of pixels to equal a theoretically equal number of analog pixels (i.e. film). Jonathan - -- To unsubscribe, see http://mejac.palo-alto.ca.us/leica-users/unsub.html