>>Not with the 17-40L lens (since I don't own one) but I find the degree of >>sharpening necessary does vary with the lens. My 20-35/2.8L needs less >>sharpening than the 28-135/3.5 but more than either the 50/1.4 or 100/2 to >>produce images to my satisfaction.
>>It sounds like you've got an excellent copy of the 17-40L, though. >>The aperture used (and other variables, such as tripod use) >>has an effect but the difference between the lenses is noticeable at 100% >>zoom. However it's not noticeable in prints at any of the sizes I've done >>so far! >>Stuart Hi Stuart, I've done much more shooting, mostly in a studio environment, hot lights and stuff with my 10D and both 28-70L and 17-40L. Tell you what, Sydney is getting awfully hot now and I'm thinking of dragging out some flashes instead!! All images were handheld ~ 1/90s f/4 to f/5.6. >From what I can see on my prints (i9100) - the 17-40L is sharper than the 28-70L at f/4 throughout their common focal range. The 28-70L is an excellent performer though, but I think Canon has a real gem with the 17-40L. I got mine for A$1450 and it's one of my best value lenses I've ever bought from Canon. Sort of gives me a 28-70L (although f4) for the 10D. Greg Au >>I don't have the 17-40L, but... >>Canon claim to have used special coating on the 17-40L - whatever that >>means! It could be that your images are a little more contrasty, and this >>is what you're noticing. Have you tried using USM settings (in PS) of 30, >>60, 0 to crispen up images taken in slight haze or on a dull day? I >>normally use something like 100-200, 0.5, 0 as a final sharpener just >>before printing. I took quite a few images close to the sea on a stinking >>hot day last July, and haze was a problem, but nicely sorted using the >>30,60,0 routine. >>Malcolm >>Milton Keynes, UK Hi Malcolm, Thanks for the photoshop tip Malcolm. I'll certainly give it a go. Greg Au * **** ******* *********************************************************** * For list instructions, including unsubscribe, see: * http://www.a1.nl/phomepag/markerink/eos_list.htm ***********************************************************
