Specs: Sigma EX Fisheye lens - 10 mm, 16.8 oz, F/2.8
Specs: Canon EF Wide-angle zoom lens - 8 mm - 15 mm, 1.2 lbs, F/4.0
Specs: Sigma EX Fisheye lens - 4.5 mm, 16.6 oz, F/2.8
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