Fisheyes... Nikon... crop sensor... options...
1. Nikon 10.5 F2.8 - relatively fast, full fisheye (though not as wide as some others)
2. Sigma 10mm F2.8 - probably comparable. Surprisingly large - I'm not sure how big the Nikon is, but when we put Code's rented Sigma against my Pentax 10-17mm, the Sigma was much,
much larger.
3. Tokina 10-17mm - well, I know all about the optics on that one.
![smile :) :)](http://www.wdwinfo.com/images/smilies/smile.gif)
The zoom is very handy but I do miss the speed of the F2.8.
4. Zenitar 16mm F2.8... really nice lens, well-loved by most owners, but of course not full fish on an APS. Still very wide, though - remember than 16mm in a fisheye will give you a much wider shot than 16mm on a rectilinear lens. This is, of course, my go-to lens for fisheye on my FF Pentax cameras. (You know - the kind where you open up the back and put this little cylinder in one end and thread it into a spindle on the other side... I've actually been carrying around one of my K1000s a lot the past week or two.) There are probably many other full-frame-compatible fisheyes you could also consider if going down that road, including the Sigma 15mm.
5. Samyang/Rokinon/Bower/Vivitar Series 1 (theirs is marked as 7mm) F3.5... a little slower but by most accounts, a very capable fisheye. I'm very curious about this one myself... not
quite enough to buy
another fisheye... but if it was an F2.8, I would seriously consider it!
6. Peleng 8mm F3.5 circular fisheye - this gives a fully round image on a full-frame and has vignetting in the corners on a crop sensor. It's a nutty one.
![smile :) :)](http://www.wdwinfo.com/images/smilies/smile.gif)
7. Lensbaby Composer with 12mm fisheye optic. This is a really odd duck - I will probably have to try it out one of these days.
![smile :) :)](http://www.wdwinfo.com/images/smilies/smile.gif)
You get circular fisheye on full-frame, or nearly - presumably it moves around depending on how you adjust the Lensbaby itself.
There may be others but that's what I can think of all the top of my head.
Does your camera have the ability to do stop-down metering? If so, the lack of metering isn't such a huge deal - the only time I recall it being an annoyance for me (my Zenitar requires stop-down metering) was when shooting on Splash Mt and trying to quickly meter at the top of the big drop!
Annnewjerz, no stop-down metering for you? If you have that, there's no need to guess and take test photos...