Archived posting to the Leica Users Group, 2000/02/29
[Author Prev] [Author Next] [Thread Prev] [Thread Next] [Author Index] [Topic Index] [Home] [Search]At 07:12 AM 29/02/2000 -0800, Doug Herr wrote: >Without having definitive information, I suspect the multigrade filter will improve the performance of enlarger lenses that aren't well corrected for chromatic errors, just because the filter will reduct the intensity of many wavelengths. > You may be right. I'd like to see some solid proof though. I used to use a similar trick with an old Canon FD 50/1.4, which wasn't particularly well corrected for chromatic aberration. An orange filter on that lens really sharpens up the images, and I suspect it may be for the same reason as you indicated above.