> -----Original Message----- > From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] Behalf Of Willem-Jan > Markerink > Sent: Sunday, December 14, 2003 4:06 PM > To: [EMAIL PROTECTED] > Subject: RE: EOS 14mm Glass Questons > > > On 15 Dec 2003 at 0:04, F�lix L�pez de Maturana wrote: > > > >Btw, has anyone ever seen actual proof of the claim that > digital sensors > > >result in quality loss in the corners with these extreme wide- angles? > > >(because the individual sensors have little lenses on top, to > accumulate > > >light, which works best at an perpendicular angle) > > > > > >Since the 1Ds is the only one to fully use these corners, I would have > > >expected a more general consensus that this quality loss is indeed a > > >fact....but until now I have the impression that it is more > theory, perhaps > > >only valid at even higher pixel-densities? > > > > > >Or: does the frequently made claim that the 1Ds creates > sharper images 35mm > > >film, or even better than 6x7 camera, _still hold true_ for > these extreme > > >wide angles? > > >(can only compare 35mm film with 35mm full-frame sensor of > course, there > > >are no equivalent 6x7 wide-angles, at least not SLR) > > > > > > I think I can give you an opinion based in my experience. I own > a 1Ds and > > use it with my 14mm and 16-35mm. I've shooted many, many > pictures with this > > equipment and I can say: > > > > 1. Color fringing do exist > > 2. It does not appear systematically but only in some > circumstances; mainly > > when the picture borders are much contrasted. > > 3. It's possible, and frankly pleasant, to use extreme wides with full > > format digital cameras but you need to be prepared to the fact > that "some" > > pictures may get out not perfect. An extremely small percentage. > > But did you compare between 1Ds and an analog/film EOS-body? > Or: was the (same amount of) color fringing absent on film? > > > -- > Bye, > > Willem-Jan Markerink >
Hi WJM, Even on film in high contrast lighting the EF 14 2.8L displays some chromatic aberrations in the extreme corners. It seems to be worse on the EOS 1Ds but it's not so big a deal now with Photoshop CS and ACR's chromatic aberration correction feature. On film you really don't see it except under poor conditions and the far corners. HTH * **** ******* *********************************************************** * For list instructions, including unsubscribe, see: * http://www.a1.nl/phomepag/markerink/eos_list.htm ***********************************************************
