----- Original Message ----- From: "Cory Papenfuss" Subject: Re: 645D Musings
>>> There are times that I have wished for a larger format than 35mm and >>> even >>> the formats on 120/220 film. For whatever reason - and the reasons >>> varied >>> at different times - I could not see getting and using a large format >>> camera, even a small large format camera, like a 4x5. With the possible >>> coming of the 645D (or is it the D645?) I'm wondering about how great a >>> quality boost one could get over a K10D. Might it get reasonably close >>> to >>> 4x5, assuming the Pentax implements the technology well? How about 6x9 >>> If >>> the 645D won't approach these quality levels, what sort of pixel count >>> and >>> sensor size - again assuming good implementation of the technology - >>> might? >>> >> >> The digital cameras seem to give an apparent quality similar to the next >> format up from film, but upon close inspection, the appearance falls down >> a >> bit. >> The lack of grain inherent in digital makes my K10 images look very >> similar >> to those from my 6x7, but close inspection reveals that the 6x7 images >> hold >> more detail than those from the K10. >> I would anticipate that the 645 digital will probably look remarkably >> like >> images from 645 or 6x7 film. Once you get to medium format, grain isn't >> much >> of an issue, unless you are making very large prints. >> >> William Robb >> > From what I've read, the comparison isn't quite so clear-cut. > It's definately a function of film speed. Last time I looked at the > stuff, 35mm film was higher in effective resolution than APS digital for > ISO levels below 200 or so. Above that, film grain dominated the film to > the point where the effective resolution was less than digital. > > Of course grain is a whole different animal from digital noise, so > a big grain of salt is required to swallow such comparisons at all. > What you've read isn't the same as making visual comparisons from one format to the other. I can sit in my living room and look at large prints made from DSLR, 35mm, 6x7 and 4x5. We are talking about pictures, not theory. William Robb -- PDML Pentax-Discuss Mail List [email protected] http://pdml.net/mailman/listinfo/pdml_pdml.net
