05-31-2008, 11:19 PM
I've posted some photos on my Picasa page. These are all hand-held and uncropped. Picasa will only allow linking to 800 pixel versions; the ones I posted are 1000 pixels.
http://picasaweb.google.com/DonKiyoti/Sigma50500mmBigma
These are some of the ones that came out pretty well, not the failures! I'm finding that it's helpful to stop this lens down to ƒ8 or so and keep the ISO up but not too much or noise becomes distracting. I like 320. At 500mm the depth of field is very narrow and I miss more photos due to focus errors than camera shake. I wonder if maybe my K10D is back-focusing a little but I haven't tested to make sure. I haven't had a chance yet to shoot very many aircraft: that's going to be trickier.


http://picasaweb.google.com/DonKiyoti/Sigma50500mmBigma
These are some of the ones that came out pretty well, not the failures! I'm finding that it's helpful to stop this lens down to ƒ8 or so and keep the ISO up but not too much or noise becomes distracting. I like 320. At 500mm the depth of field is very narrow and I miss more photos due to focus errors than camera shake. I wonder if maybe my K10D is back-focusing a little but I haven't tested to make sure. I haven't had a chance yet to shoot very many aircraft: that's going to be trickier.


