No, no, Bill, you've got it all wrong. You are supposed to make small jpeg's of each format and compare them. As you know, less noise is not the same thing as more information, but it is what the lay person notices.
-graywolf William Robb wrote: > ----- 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
