Hacked Gh2 with rokinon 8mm?

[Shaverfilms]

So i have alot of sports entertainment coming up including Professional mtb and Professional skiers that i am going to be filming soon and i would like a very wide SHARP lens, been looking at the rokinon but am open to any suggestions also seen the tokina 11mm? any help would be greatly appreciated! thanks!

 

[Jason Allen]

Consider the Panasonic 7-14mm f/4. Very sharp, none wider, and very compact. The Rokinon 8mm is the MF, budget option of course, but it doesn't do 7mm, or 9mm-14mm very well.

 

[mcbob]

The Rok 8 is a fisheye. That's fine if you're going for the fisheye look, and it's useable on other camera bodies. I've also tried this lens on the Metabones Speedbooster (Nikon mount) with good results (the edges get a bit messy, but that's normal)
For m43, there are two other options: the Samyang/Rokinon 7.5mm fisheye for m43 mount and the Lumix 8mm fisheye. Here's a comparison of those two:
http://m43photo.blogspot.com/2012/02/samyang-75mm-f35-fisheye-lens-review.html

if you want a rectilinear lens (one that corrects for barrel distortion), there are a few options you can try:
- the aforementioned Panasonic 7-14. Compact, sharp enough, auto functions available
- Nikon-mount ultrawide rectilinear zooms with the SpeedBooster: Tokina 11-16/2.8 and Sigma 10-20/3.5 . I've sampled both and they both offer full coverage and work very well. The corners on the 11-16 do get soft at 11mm and it's the largest (and fastest) option