nicksan wrote in post #10589187
While I like the Sigma 50 1.4 and feel that the AF is decent, it is no where near the AF speed/accuracy of the more recent top-of-the-line AF-S lenses like the 24-70 and 70-200VRII. Not even close.
That said, all these lenses will hunt if there's little to no contrast. This is the same whether you shoot Canon or Nikon. I've experienced this several times in the short time I shot Nikon. But we are talking really low light. But the interesting this is, once it acquires focus, it will rarely miss. On the other hand the MKIV I used to have would also eventually acquire focus but it gave me a bunch of horrid OOF images. So I am more worried about accuracy and my D3 and D700 does very well and I am very happy about that compared to my days with Canon.
That said, it is indeed a frustrating thing shooting in low light, waiting for any camera to acquire focus. This is when the focus/release priority settings come in handy b/c sometimes the camera will be in reasonable focus yet it won't think it locked on. Having it in release priority will allow you to shoot anyways...
I've said it a bunch of times but Nick you touched on one of the best aspects of shooting Nikon again. Locking on. When focus is acheived, it is in focus, your shot is in focus. Period. Is it frustraing when it hunts? Yes. BUT, I would MUCH rather shoot with a Nikon that hunts, then acheives reliable, predictable focus than to shoot Canon which hunts, then gives you less reliability because the camera has assumed the shot is in focus.
The other piece I agree with too, the Sigma 50 is not AFS speed by any means, however saying that I will say for me it has been AFS accurate.
monk3y wrote in post #10589452
First time to shoot at a Properly plated food (Food competition). 3 hours ago. D700+ 50mm f/1.4D
Monkey that first shot is magazine worthy, well done!