Vivitar 7mm fisheye review at Kurtmunger
And there it is the next review at Kurtmunger. Kurt never rests 
That time he tested a third party lens, the Vivitar 7mm F/3.5 fisheye lens on the Sony A700: “Optically, this fisheye lens is quite good, and I’d recommend it for people that have APS-C cameras. It’s pretty sharp stopped down, and control of color fringing, light fall-off and ghosting is above average. The Vivitar 7mm APS-C fisheye performs well stopped down, although it isn’t as sharp as the Sony 16mm fisheye in the centers with a wide aperture. However, the Vivitar corners seem to be sharper with more contrast at smaller apertures. Don’t use the Sony 16mm F/2.8 fish-eye (review) on an APS-C camera, as the distortive effects are diminished by the crop factor, that’s why it doesn’t make any sense to directly compare them.”
Check out price and availability of the Vivitar lens at Amazon.cn, Digitalrev, eBay.
Check out price and availability of the Sony 16mm lens at Amazon.cn, Digitalrev, eBay.
