catherine96821:
Somebody that's a top notch regular here (Warren?)...I cannot recall, prefers a similiar lense more and I looked at his site and thought I liked the lense perspective better also.
Was it Parabolic? Any suggestions appreciated, I am shopping for a replacement but thought I'd like to try something different.
Also, whats the conventional wisdom on Sigma lenses? Is there a website where you can see the same shot taken with different lenses?
Hi Catherine, what happened to your 12-24?
As a caveat, I've not used the Tokina 10-17 - I've only held one once from someone I know who has one, but have not used it. My only knowledge on the lens is really just from specs, but you should consider some differences other than the focal length range.
The 10-17 is a fisheye lens and the 12-24 (Nikon) is wide angle zoom, but not a fisheye lens. I do own a Nikon 10.5 fisheye which I absolutely love for underwater work (wreck photography in particular). The fisheye will make straight lines curved, so both the Tokina 10-17 and Nikon 10.5 will be similar in this respect. However, with the Tokina zoomed into the longer end of its range, it might produce an image that is slightly curvy when compared to a non-fisheye lens like the Nikon 12-24 which is zoomed into the same focal length - this might lead me to think the Tokina 10-17 might have limited use out of the water especially at the longer end of its focal length range, at least when compared to a non-fisheye lens of the same focal length.
I'm not certain also how much difference this might make, but the Tokina uses a 6 bladed diaphragm (I don't believe it is rounded either) and the Nikon 10.5 uses a rounded 7 bladed diaphragm. Typically, with fewer blades in the diaphragm, it can result in harder out-of-focus areas of an image taken with the lens (i.e. areas outside the depth of field) whereas more blades (and rounded at that) will result in generally softer and more gradual blurring of the out-of-focus areas. Do a google on 'bokeh' - there are probably better explanations out there than I can give.
Also, the Nikon 10.5 is an f/2.8 versus the Tokina 10-17's f/3.5. As to how much of a difference this makes - not sure since I haven't used the Tokina, but in low light conditions for autofocus (if you use autofocus), I'd take every advantage the larger aperature of the f/2.8 offers. And as well, there should be a potentially shallower DOF.
The Tokina shorter focal length of 10mm versus the Nikon 10.5mm will make a difference, but how much? Not really sure, but I suspect probably not a lot.
I suppose I'd really only be able to make an assessment for myself if I were to actually use one - but for now, these may be things to consider.