That is both true, and not true in the case of digital cameras. If you have a 6mp camera with a full frame sensor, and one with a smaller 6mp sensor then you are not giving up much image quality with the smaller sensor so it does in effect give you a longer lens. If the larger sensor has a higher resolution then the smaller one is in effect a crop as Joe says. It is like using different sizes of film in the same camera. Anyone who has used a Rolleikin in an old Rolleiflex, or used a roll film holder on a 4x5, knows just what I mean. Unfortunately most 35mm users have not had experience with cameras that use multiple formats so do not think in those terms
It is I admit kind of confusing, but one has to figure the tradeoffs. All digital cameras now on the market are tradeoffs between resolution, quality, and price and will undoubtedly remain so for some time to come. Ciao, Graywolf ---------------------------------------------------------- ----- Original Message ----- From: "Joseph Tainter" <[EMAIL PROTECTED]> To: "pdml" <[EMAIL PROTECTED]> Sent: Saturday, August 30, 2003 12:54 PM Subject: Re: Future DSLR's > Marnie wrote: > > "But being able to have a telephoto lens cheaper is greatly, vastly, > immensely appealing." > > Marnie, there is no (emphasis) telephoto multiplication factor in using > standard lenses on an APS-sized digital slr. Everyone writes as if there > were, but that is just a convenience of expression. With an APS-sized > sensor, you are just using the center of your lens. > > Guess what? You already have that capability. Just crop the center of > the image and enlarge it to the size you want. It will appear as if > taken with a longer lens. > > A full-frame sensor would also preserve that capability. You would still > be able just to crop and enlarge the center of the image, as if the > image were taken with a longer lens. > > The APS-sized sensor is not giving you cheaper telephoto lenses, just > lower image quality. > > Joe > --- Outgoing mail is certified Virus Free. Checked by AVG anti-virus system (http://www.grisoft.com). Version: 6.0.514 / Virus Database: 312 - Release Date: 8/28/03
