Monday, March 11, 2013

Rokinon 8/2.8 Fisheye and geometry corrections

Here's a very informal sample of the kinds of things that can be done with the Rokinon 8/2.8 Fisheye. The first shot is as-is, the APS-C equivalent is 12mm which is wide enough to show some fisheye effect. The middle shot was manually corrected in DxO Optics 8 with intensity=82 and respecting the aspect ratio, and the vertical edges were re-aligned in DxO ViewPoint. The last shot is the same as the middle shot but cropped to the maximum rectangular area available. 

It is obvious that with some careful composition this lens is going to be very handy for architectural shots. I shot this on purpose off the side to exaggerate the distortion. 

Rokinon (Samyang /Bower ) 8mm f/2.8 for Sony e-mount

Here's a little cameraporn : Rokinon (Samyang /Bower ) 8mm f/2.8 for Sony e-mount. This is a lens that had been selling for a while for $400 or so, then grabbed my attention when I started to see it on sale for around $300. And then it came up on Amazon's Gold Box for $239, but only the silver model (it also comes in black). I didn't care about the color, but I was worried about the quality of the finish. I am actually impressed, the finish is really damn nice, it is a really cool-looking lens. The focus ring is still a bit stiff, but the depth of field is so gigantic that you can just pre-focus and forget about it. The hood is not removable, the lens arrived with both caps and a storage pouch. Somehow Sigma and Rokinon manage to sell some of their NEX lenses with pouches or cases, yet the three Sony lenses I have bought stand-alone (16mm pancake, 30mm macro, 55-210mm) only arrived with caps.
The lens is tiny, it seems to be about the same size as the 30mm Sigma 2.8. As for weight, it feels about the same as other manual lenses I have, but better balanced since it doesn't need an adapter.