Archived posting to the Leica Users Group, 2006/06/15
[Author Prev] [Author Next] [Thread Prev] [Thread Next] [Author Index] [Topic Index] [Home] [Search]In the case of Epson there is software co correct for the Voigtlander lenses which is pre-set. There is a control in the raw convertor to variably adjust non Voigtlander lenses by eye. Interestingly the precise design of the lens must have a bigger impact than its focal length because the 12mm vignettes considerably less than the 15mm. I'm sure somebody has published some comparisons on the web. Frank On 15 Jun, 2006, at 17:07, Ed Kowaleski wrote: > > The software that accompanies the RD-1 has a provision for the > correction of > the effects of vignetting. I assume Epson calculated that a 15mm > lens would > vignette so much, a 21 this much, and a 24 that much, etc., and > provided > image correcting software accordingly. As far as I can see, it > works quite > well. > > Now, it seems suddenly, Leica says, "Oh, by the way, you might want > to have > these bar codes put on the inner face of your M-lenses so you can > capture > data that tells you which lens was used." There is more than a > veiled > implication that this will also impact image quality because Leica's > statement said that these codes would "help optimize image quality". > Further, they stated that owners of lenses produced after July 1, > would > "benefit from the image optimization" resulting from the retrofit > application of these bar codes. > > So there appears to be more at stake that just adding metadata and > there > seems to be a clear suggestion from Solms that one had better get > the bar > codes put on pre July 1, 2006, lenses or live with some pretty > expensive > junk. It sounds as if they've invented a Leica M that in fact > cannot use > older lenses without some lack of image optimization. Or, is this > their > solution to the Vignetting problem and rather than take the Epson > route by > fixing the vignetting in software, they have seen this as a profit > improvement program? I would think that lots of lenses at 95 Euros > each > results and a significant Euro flow > > Please, someone tell me I've misread Leica's statement. > > Ed Kowaleski > > > > _______________________________________________ > Leica Users Group. > See http://leica-users.org/mailman/listinfo/lug for more information