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p.1 #10 · Nikon D90 and low light lens. | |
kaybeejay wrote:
Maybe I have a bad copy, but I've noticed that at 200mm - my shots from the 18-200VR are better exposed and sharper than those from my Sigma 70-200 f2.8 HSM II.
Perhaps it is because for my church, VR is better than f2.8 at 200mm?
(I'm also using a D90)
I will comment on this specifically, because I think it will also help the OP:
VR only makes up about 2 stops, so the 18-200 and 70-200 are about even on hand held ability wide open. The 70-200 at f4 or f2.8 will do a better job of stopping subject motion and getting sharp results IF 1) You keep the camera and lens steady AND 2) Focus is accurate.
For all intents and purposes, I can't handhold my 70-200 indoors. I need about 1/400 to keep it steady. F2.8 is also very unforgiving on focus accuracy, especially so at 200mm.
My Sigma 70-200 HSM II is great on a tripod, or handheld for short periods outdoors in good light. You may want to test yours on a tripod with sufficient shutter speed and/or exposure delay. First check with AF, then check with magnified live focuses manually. If the 70-200 gives you good results on a tripod with AF, then you simply need to give it faster shutter speeds when shooting handheld. If it gives good results only when manually focused, then it may need to be focus adjusted by Sigma. If it doesn't give good results even when live view focused manually on a tripod, then it needs calibration from Sigma.
Bringing this back to the OP, a 70-200 or 80-200 is a pretty significant acquisition. Using one requires good technique on support, lighting, and focusing to achieve good results. The Sigma 50-150 is noticeably lighter and makes handholding somewhat easier. I wouldn't fool with the Tokina 50-135. While it is good optically, it focuses too slowly to fulfill the telezoom role IMO. Same for the Tamron 70-200.
My Nikkor 85 1.8 is one of my least used lenses. I'm strongly considering selling it for a Rokinon 85 1.4 for the portrait work and giving the general purpose telephoto duties to my 70-200.
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