Archived posting to the Leica Users Group, 2004/09/30
[Author Prev] [Author Next] [Thread Prev] [Thread Next] [Author Index] [Topic Index] [Home] [Search]How to make a coke bottle behave like a summicron http://www.dxo.com/en/photo/home/default.php best regards simon jessurun ----- Original Message ----- From: "feli" <feli2@earthlink.net> To: "Leica Users Group" <lug@leica-users.org> Sent: Thursday, September 30, 2004 9:25 PM Subject: Re: [Leica] Consider This... > > On Sep 30, 2004, at 11:31 AM, Marc Attinasi wrote: > \ > > Software corrections of optical aberations are already being done, as > > Dennis said, in the computer (PhotoShop plugins). It may be a longer > > time before the cameras do the fixes, but it will happen. The lens > > used to make the image, along with the focal length, distances, > > aperture, etc. are all easily recorded, and the image converter can > > use this information, along with profiles of the lenses, to adjust > > field curvature, barrel distortion, etc. This has been discussed by > > several leading camera manufacturers who realize that the game has > > change - I'm not making this stuff up! ;-) > > Yes, but there are few problems with fixing things in software. > > -Yes, you can fix barrel / pincushion effects in software, but you take > a hit in image quality. Every time you perform a sub-pixel > transformation > on an image you essentially cut it's resolution in half. > > -Software can't add detail that wasn't captured in the first place. > You can't take a picture that is out of focus and make it sharp. > You can sharpen the out of focus image, which will improve things > to a point, but the process has it's limitations. Sharpening merely adds > edge contrast, not detail. Same goes for lenses that deliver soft image > quality in the field and corners. If the data isn't there, you can't > add it. > > There is no substitute for a good lens. > > Feli > > > > ________________________________________________________ > feli2@earthlink.net www.elanphotos.com > > _______________________________________________ > Leica Users Group. > See http://leica-users.org/mailman/listinfo/lug for more information