After reading a number of views regarding a DX lens on a FX camera I decided to try mine. Received a D700 July 30 & all is well. Today I put on a 20mm 2.8 Nikkor to check field of view. Replaced the 20 w/12-24 Tokina. Yep vignettes bad at 12mm up thru 15. From 15 or 16mm thru 24 it is perfectly useful. No DX switching at all. Now the 12-24 was a real 18-36 on the DX camera so I feel like I lost nothing with the WA DX lens.
I think you missed the point. He's using the lens in FX mode, not DX mode. At the longer focal lengths, the lens does not vignette the FX frame. (Whether the corners are of good quality I'm not so sure; I haven't seen an analysis of that.)
I tried my Tokina 12-24 on the D700 too. I found that it vignettes up past 18mm in the extreme corners. The corners look clean on mine somewhere between 19-20. But the lens is sharp and very nice and as of right now, I'm thinking that the $300 - $400 I could get for it if I sold it wouldn't buy me a better 20mm lens, so I think I'm going to stick with it for a while.
>I'm thinking that the $300 - $400 I could get for it if I sold it wouldn't buy me a >better 20mm lens, so I think I'm going to stick with it for a while. The Nikon 12-24 does not hard vignette (on the D3) longer than 17mm, produces decent corner quality by 20mm and even better at 24mm.
Photography is a bit like archery. A technically better camera, lens or arrow may not hit the target as often as it could if the photographer or archer does not practice enough.