Sigma 4.5mm f 2.8 dc hsm fisheye %28for canon%29

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Sigma 4.5mm f/2.8 DC HSM Fisheye for Canon

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The Sigma 4.5mm f/2.8 DC HSM Fisheye for Canon

Another unique offering: the Sigma 4.5mm fisheye is a full 180° spherical fisheye for crop sensor cameras. It provides a fully circular 180° field of vision, used both for interesting photographic effects and for scientific measurements of angles and area. The image will appear as a 180° “circle” in the middle of the photo. Additionally, the lens has HSM (hypersonic motor drive) which provides rapid focus and full time manual focus override.

Roger's Take

Full disclosure here: I’m not a fan of the fisheye look, especially the full circle fisheye look. But I will say this is a sharp lens with a huge depth of field. And the images are incredibly panoramic when ‘defished’ in software, which is what I do with them mostly. One point I’ll warn everyone about: the dark coating used on all of the 4.5mm and 8mm Sigma fisheyes tends to flake off. It has absolutely no effect on image quality but it’s apparent cosmetically and has occurred on every copy we have.

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