On Jul 5, 2007, at 1:11 PM, Laurie wrote: > While Digital SLRs might "know" or identify the lens focal length, > aperture > setting, focus, etc., It cannot identify the glass that is used in > any given > lens or the optical properties specific to that particular lens. > Since most > DSLRs allow for interchangeable lenses and lenses made by varying > manufacturers, it is probably not reasonable to expect the camera > to be able > to compensate except in a generalized way for light fall off > produced by any > particular lens.
Actually, the Olympus stuff does know what lens is on the camera and can be set to compensate. I used to have an E-1. I don't know how "smart" the lenses are, but I know that sometimes I'd get notifications from the Olympus studio software that one of my lenses had a new firmware update available, so apparently the lenses had more than just an ID residing in their circuitry. I personally never used the "Shading Compensation" because the E-1 was slow enough already. When DP Review tested the E-1 they got these write timing numbers: http://www.dpreview.com/reviews/olympuse1/page10.asp 2560 x 1920 SHQ with no filter 2.0 sec 2560 x 1920 SHQ Lens Shading compensation 18.9 sec Nearly ten times slower write speeds using lens shading compensation was enough to scare me away from it for keeps. Interesting idea, though. -Rob ---------------------------------------------------------------------------------------- Unsubscribe by mail to [EMAIL PROTECTED], with 'unsubscribe filmscanners' or 'unsubscribe filmscanners_digest' (as appropriate) in the message title or body
