Available Mounts: Canon EF, Nikon F, Sigma SA, Pentax K
Lens type: Fisheye (Diagonal on full frame)
Focus type: Manual or auto
Aperture range: f/2.8 – f/22
Filter size: n/a
Dimensions (with caps on): 89mm high, 75mm wide
Height (from camera front to lens front; caps off): 68mm
Weight (with caps on): 384g / 14 oz.
Weight (with caps off): 338g / 12 oz.
Other: fixed plastic lens shade
This lens was a bit of a disappointment considering the price. The star distortion known as ‘coma’ which makes the stars look triangular away from center was pretty bad at all focal ratios tested. The vignetting and loss of sharpness was also very noticeable until about f/4, which is where I would use this lens. Lastly, I didn’t like how short this lens is. I didn’t have a dew strap that was narrow enough for the tiny height of this lens so unfortunately the dew strap interfered with the images, which I didn’t notice until the next day, and couldn’t re-do the test.
$609 USD (December 2020)
Sigma 15mm F2.8 EX DG Diagonal Fisheye
Reader Rating0 Votes
Small and lightweight
Significant coma away from center at all focal ratios tested