The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Sigma 10mm F2.8 EX DC HSM Fisheye and the Sigma 8mm F3.5 EX DG Fisheye for their suitability to various photography scenarios:
Size and Weight Comparison
The size of a lens is a crucial factor to consider when comparing two lenses. Sigma 10mm F2.8 EX DC HSM Fisheye is the longer of the two lenses at 83mm. The Sigma 8mm F3.5 EX DG Fisheye with a length of 69mm, is 14mm shorter. Besides being longer, the Sigma 10mm F2.8 EX DC HSM Fisheye also has a larger diameter of 76mm compared to the Sigma 8mm F3.5 EX DG Fisheye's 74mm diameter.
The weight of a lens is equally significant as its external dimensions, particularly if you intend to handhold your camera and lens combination for extended periods. Sigma 8mm F3.5 EX DG Fisheye weighs 400g, 15% (75g) lighter than the Sigma 10mm F2.8 EX DC HSM Fisheye's weight of 475g.
Below you can find the dimension and weight table of the Wideangle Fisheye Prime Lenses in Sigma SA Mount for size comparison purposes.
Ultra-Wideangle Lenses in Sigma SA Mount for Size Comparison
Lens Mounts
Both the Sigma 10mm F2.8 EX DC HSM Fisheye and the Sigma 8mm F3.5 EX DG Fisheye has the same Sigma SA lens mount. Some of the latest released cameras that are compatible with the Sigma SA lenses are Sigma SD1 Merrill, Sigma SD1 and .
Sigma 10mm F2.8 EX DC HSM Fisheye is also available in the Canon EF and Nikon F (DX) mounts.
Sigma 8mm F3.5 EX DG Fisheye is also available in Canon EF and Nikon F (FX) mounts.
Focal Range
Sigma 10mm F2.8 EX DC HSM Fisheye is a prime lens with fixed focal lenght of 10mm which has an effective (full-frame 35mm equivalent) focal range of
15mm when used on a APS-C / DX format camera.
On the other hand, the Sigma 8mm F3.5 EX DG Fisheye is a prime lens with fixed focal lenght of 8mm.
