Comparing sharpness underwater of the Sigma 15mm and Tokina 10-17mm fisheye lens on a ful-frame Niko

Sigma 15mm fisheye lens review, comparing sharpness underwater and field of view of the Sigma 15mm and Tokina 10-17mm fisheye lens on a full-frame Nikon D800 camera ... The Tokina 10-17mm fisheye lens is by far the most popular lens choice for underwater

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