On 27/3/06, Peter Hancock, discombobulated, unleashed: >So I cleaned the filter on my 100-400 and shot a home made test target, >three times at each aperture, mirror lock, self timer, 400mm on a 10D. >Raw mode, convert to jpg in Capture 1. Then average the jpg file sizes >for each aperture. A graph of the results, with and without filter, is >shown here: > >http://www.psychology.stir.ac.uk/staff/phancock/filter.jpg > >I always had been a bit disappointed with the image quality at the long >end of this lens...
Hi Peter, What are the values on the vertical scale of the chart? Cheers, Cotty (lens test dumpkoff) ___/\__ || (O) | People, Places, Pastiche ||=====| http://www.cottysnaps.com _____________________________ * **** ******* *********************************************************** * For list instructions, including unsubscribe, see: * http://www.a1.nl/phomepag/markerink/eos_list.htm ***********************************************************
