Best Sigma Video/Cinema Lenses Under CA$700 in 2026

Extending the reach of compatible Sigma telephoto lenses by 1.4x without sacrificing autofocus capability, this converter maintains full electronic communication between the lens and Nikon F-mount body. Its compact design preserves handling balance while adding versatility to your existing kit. This accessory is best for portrait and wildlife photographers needing extra focal length without investing in a dedicated super-telephoto prime lens.

Its 8mm focal length captures a full 180-degree circular image on full-frame sensors, with an f/3.5 aperture and one ED element maintaining sharpness across an 11-element, 6-group optical design. Close focusing to 5.3 inches yields a 1:4.6 magnification for dramatic near-subject distortion, while the rear gelatin filter holder and Super Multi-Layer coating enhance creative control and contrast. It’s best for photographers seeking extreme barrel distortion and exaggerated perspectives for creative compositions, as its low 24.6 portrait score confirms it’s ill-suited for conventional subjects.