Reviews and Problems with Sigma 8mm F3.5 EX DG CIRCULAR FISHEYE
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30 November 2015
Summary: This is a special use lens that produces a circular image on the sensor. When used in certain situations the results can be amazing, also remember if your camera has the mega pixels you can crop in to produce a "rectangular" close up.
Summary: Great fisheye lens for Full Frame Cameras. Fast focus, this lens will fill the frame be careful not to get your feet or anything else you don't want in the picture. I'm having a lot of fun shooting with this lens!
Excerpt: On a full-frame camera this lens provides a circular image with all the distortion expected for a fisheye. The circular image will not fill the frame or reach the edges of the frame. The circular image can be cropped and "unfished" with the adaptive wide angle filter in photoshop.