SIGMA 150-600MM SP, MORE THOUGHTS AFTER THREE MONTHS OF FIELD TESTING


Nikon D750, Sigma 150-600mm / f5-6.3 DG OS HSM Sports Lens

Coming back from two weekend trips with filled memory cards in the camera and trying to make up the mind what photos to show is probably a good problem to have. This happens always in spring, when wildlife is migrating back north or getting ready to raise their offspring here in eastern Iowa. This pair of Trumpeter Swans rested together with some Canada Geese at a small puddle near the village of Green Island, Iowa. It was still there when I left the wetlands, hours later in the afternoon, and in much better light than during the late morning.

I promised you in December 2015 to write a little more about my experience with the Sigma 150-600mm / f5-6.3 DG OS HSM Sports Lens, after I had some more field testing done. So, here are a few thoughts. The lens does a wonderful job delivering sharp images even with wide open aperture (f/6.3 at 600 mm). This was not necessarily the case with the old Sigma 50-500, which had to be set to f/8 at 500 mm for best results. I shot the Trumpeter Swans with f/6.3 and f/8 and like the sharpness equally. This is very important to know because it allows to shoot faster shutter speeds in many situations. The background is much better blurred at f/6.3, which helps to make the subject of the picture stand out from its surroundings. The corn field behind the swans is actually a pretty busy background, but smoothing it as much as possible improves the quality of the image, at least in my books… If the critter is moving and I need to pan with the lens, I usually shoot with f/8. The small increase in depth of field may help to get a sharp shot at all and the background is usually blurred anyway. Sure, a lens with f/4 or f/2.8 may deliver a better background but for most amateur photographers, like me, this is cost prohibitive…😉