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Fish Eye Takumar 17mm F4 SMC Vintage Lens Review –
Take a look at the super rare, but very interesting, Super-Multi-Coated FISH-EYE-TAKUMAR 17mm f4 lens produced by Pentax.
Fisheye are for those whose viewing angle is extremely large, 180 degrees or more. The fisheye lens is a special form of wide-angle lens, whose distortion resembles an image reflected on a sphere.
You can find the Fish Eye Takumar 17mm F4 here at a fair price.