Canon EF 8-15mm f/4L Fisheye USM vs Sigma 12-24mm f/4 DG HSM Art

Pick the Canon EF 8-15mm f/4L Fisheye USM if

• You want a wider view: 8mm vs 12mm at the wide end
• You shoot close-ups: it focuses down to 0.15 m vs 0.24 m
• You want bigger close-ups: 0.34× vs 0.2× maximum magnification
• You want a compact lens: 83 mm vs 131.5 mm long
• Our notes say it suits: Creative fisheye shots, action sports, immersive video and VR

Pick the Sigma 12-24mm f/4 DG HSM Art if

• You need more reach: 24mm vs 15mm at the long end
• You care about the shape of out-of-focus highlights: 9 aperture blades vs 7
• You prefer a newer design: released 2016 vs 2011
• Our notes say it suits: Landscapes and architecture, real estate interiors, astrophotography

Our notes

Canon EF 8-15mm f/4L Fisheye USM

A zoom fisheye giving a circular image at 8mm and a full-frame diagonal fisheye at 15mm on full-frame bodies. Weather-sealed L design.

Pros

• Zoom fisheye range
• Circular image at 8mm
• Weather-sealed
• Crisp optics

Cons

• Fisheye distortion limits general use
• Exposed bulbous front element
• No front filter thread

Our notes

Sigma 12-24mm f/4 DG HSM Art

An ultra-wide zoom for full-frame DSLRs with a constant f/4 aperture. It has a bulbous front element without a screw-in filter thread and focuses as close as 0.24 m.

Pros

• Very wide 12mm end
• Constant f/4
• Close focus 0.24 m
• HSM autofocus

Cons

• No front filter thread
• Slower than f/2.8 zooms
• Large for an ultra-wide zoom