The FOV would be the equivalent of a 600mm on a 24x36 sensor. Bill
----- Original Message ----- From: "J. C. O'Connell" <[EMAIL PROTECTED]> To: <[EMAIL PROTECTED]> Sent: Friday, December 12, 2003 5:08 PM Subject: RE: New Pentax DSLR next year > Your talking something different here. > The inital suggestion was that a 400mm 645 > lens would be much different than a 400mm 35mm format > lens ON THE SAME 24x36 DSLR CAMERA! Not true. > jco > -------------------------------------------------------------------------- -- > J.C. O'Connell mailto:[EMAIL PROTECTED] http://jcoconnell.com > -------------------------------------------------------------------------- -- > > -----Original Message----- > From: Bill Owens [mailto:[EMAIL PROTECTED] > Sent: Friday, December 12, 2003 4:57 PM > To: [EMAIL PROTECTED] > Subject: Re: New Pentax DSLR next year > > > Granted, but you would have less of the image circle visible on a 24x36 > sensor than on 645 film. IOW, if your main subject is two inches high, it > will be two inches high on both formats, but the entire subject would be > visible on 645 film and less than 1/2 of it on 35mm (assuming landscape > orientation). > > Bill > > ----- Original Message ----- > From: "J. C. O'Connell" <[EMAIL PROTECTED]> > To: <[EMAIL PROTECTED]> > Sent: Friday, December 12, 2003 4:44 PM > Subject: RE: New Pentax DSLR next year > > > > 400mm is 400mm no matter what sensor > > or film format. a 400mm 645 lens wont look > > any different than a 400mm 35mm format lens on > > THE SAME 24x36 dslr. There would be no > > logical reason to use a 645 400m lens > > on a 24x36 dslr vs. a 35mm (24x36) format > > 400mm lens on a 24x36 dslr. There IS NOT > > an "apparent" optical difference if both > > lenses are the same 400mm FL! > > > > jco > > > > -------------------------------------------------------------------------- > -- > > J.C. O'Connell mailto:[EMAIL PROTECTED] http://jcoconnell.com > > -------------------------------------------------------------------------- > -- > > > > -----Original Message----- > > From: Bill D. Casselberry [mailto:[EMAIL PROTECTED] > > Sent: Friday, December 12, 2003 3:47 PM > > To: [EMAIL PROTECTED] > > Subject: Re: New Pentax DSLR next year > > > > > > "J. C. O'Connell" wrote: > > > > > huh? a 400mm lens designed for 645 isnt going > > > to give any bigger image magnification than a > > > 400mm designed for 24x36 but it would be larger > > > and heavier and costlier. No way Jose! > > > > yeah, sure - by straight optical physics > > > > but the actual effect is a seemingly longer reach w/ > > a given focal length on a smaller "film gate" exactly > > like everyone is so happy w/ when putting a tele onto > > their StarKist w/ its less than 24x36 sensor. The end > > result (granted, it is merely a *cropping factor* like > > on would get w/ an enlarger) is an apparently longer > > lens - period - ... and that's all that matters. > > > > Bill > > > > --------------------------------------------------------- > > Bill D. Casselberry ; Photography on the Oregon Coast > > > > http://www.orednet.org/~bcasselb > > [EMAIL PROTECTED] > > --------------------------------------------------------- > > > > > > >
