> > From: "P. J. Alling" <[EMAIL PROTECTED]> > Date: 2007/05/15 Tue PM 07:47:42 GMT > To: Pentax-Discuss Mail List <[email protected]> > Subject: Re: Amazon buys dpreview.com > > It wouldn't be all that expensive. How many lens mounts are there in > Digital currently? > > Pentax, Canon, Minolta, Nikon, 4/3, and now Leica. > > They could probably dispense with Leica. > > In fact get an Adaptal II Macro, (focal length is even relatively > unimportant), for the sensor resolution tests. Every thing else could > be tested with the lens that came with the test camera, but the sensor > resolution test would be much more honest using the same lens for each > test, removing a major variation.
Don't think there is an ADII for 4/3. > > Tom C wrote: > >> From: "Dario Bonazza" <[EMAIL PROTECTED]> > >> > > > > > >> Yes and no. Even using a given third-party lens, you (or someone else) > >> could > >> argue that lens vary sample to sample, so the resulting quality assessment > >> is debatable at best. > >> Then, provided that DPReview is using comparable lenses (which they do), I > >> don't find useless to know what quality I can get once I enter a given > >> camera system (which to some extent means a camera and its genuine lens, > >> doesn't it?). > >> > >> > > > > Yes, I don't recall reading any reviews of film camera bodies that were > > universally tested using the same 3rd party lenses. How did we ever get by > > before the internet? :-) > > > > How many users of a K10D, Sony Alpha, Canon whatever, or Nikon D80 are > > going > > to acquire the same 3rd party lens used by the theoretical tests we're > > discussing? > > > > I agree, most users are buying into a camera system, not just the camera > > body. Therefore doing tests with a commonly used lens within each camera > > system provides legitimate, if not perfect results, for a large number of > > readers. > > > > > > > >> Furthermore, I think that many prospect users are not so interested in a > >> sensor test. They are interested in camera performance. For those wanting > >> to > >> shoot RAW exclusively - and provided that DPReview or someone else would > >> ony > >> test RAW performance - you could look at the Nikon D80 or Sony Alpha 100 > >> test for knowing what to expect from the K10D. > >> > >> Even worse: which converter of choice for testing RAW files? Which release? > >> Isn't that changing on an almost daily basis? How to get comparable > >> results? > >> Then, isn't it possible that a given converter or a given conversion (or a > >> given tester!) would be biased toward a camera, or sensor, or whatever? I'm > >> truly afraid that your suggested test procedure will result being far more > >> debatable than testing a camera JPEG performance, which at least can be > >> rather associated to a given camera. > >> > >> Dario > >> > > > > All good and valid points. > > > > Tom C. > > > > > > > > > > > -- > All dogs have four legs; my cat has four legs. Therefore, my cat is a dog. > > > -- > PDML Pentax-Discuss Mail List > [email protected] > http://pdml.net/mailman/listinfo/pdml_pdml.net > ----------------------------------------- Email sent from www.virginmedia.com/email Virus-checked using McAfee(R) Software and scanned for spam -- PDML Pentax-Discuss Mail List [email protected] http://pdml.net/mailman/listinfo/pdml_pdml.net
