Normal lenses introduce light in a sort of cone shaped projection against the film plane, while digital lenses should and now do project the light in parallel almost a rectangular shaped prjoection that fall upon the chip. Steve Shapiro, Carmel, CA ----- Original Message ----- From: <kpp@xxxxxxxxxx> To: "List for Photo/Imaging Educators - Professionals - Students" <photoforum@xxxxxxxxxxxxxxxxxxxxxx> Sent: Friday, August 20, 2004 9:04 AM Subject: Digital lens question > well since almost everything now turns around digital here is something to sparkle some conversation... > > it regards the new series of lenses that ar fit for digital cameras...do they differ that much from the regular "film" lenses or are they branded that way? > I can make 2 suppositions: > 1. the light beam is optimized for the smaller recording media size (sensor). If so, what are the tradeoffs when this lens is used in a compatible film camera? > 2. are they branded "for digital" jsut because the have been changed to a focal length that equates the "film" regular value/range (IOW 17mm being a 28mm when used with a film camera) > > and more specific... > anyone has any commnets on the new Tamron SP AF28-75MM F/2.8 XR Di LD Aspherical (IF) lens...i am considering a future buy and use with film cameras... > > thanks beforehand, kostas > > > ____________________________________________________________________________ _________ > http://www.mailbox.gr ÁðïêôÞóôå äùñåÜí ôï ìïíáäéêü óáò e-mail. > http://www.thesuperweb.gr Website ìå ÁóöáëÝò Controlpanel áðü 6 Euro êáé äþñï ôï domain óáò! > >
