The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Tokina Opera 16-28mm F2.8 FF and the Venus 9mm F2.8 Zero-D 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. Tokina Opera 16-28mm F2.8 FF is the longer of the two lenses at 134mm. The Venus 9mm F2.8 Zero-D with a length of 53mm, is 81mm shorter. Besides being longer, the Tokina Opera 16-28mm F2.8 FF also has a larger diameter of 89mm compared to the Venus 9mm F2.8 Zero-D's 60mm 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. Venus 9mm F2.8 Zero-D weighs 215g, 77% (725g) lighter than the Tokina Opera 16-28mm F2.8 FF's weight of 940g.
Lens Mounts
The Tokina Opera 16-28mm F2.8 FF has the Canon EF lens mount whereas the Venus 9mm F2.8 Zero-D has the Canon EF-M lens mount. Some of the latest released cameras that are compatible with these mounts are Blackmagic URSA 12K LF, Z CAM E2-F6 II 6K and Z CAM E2-S6 II 6K for the Canon EF Mount and , and for the Canon EF-M Mount.
Tokina Opera 16-28mm F2.8 FF is also available in the Nikon F (FX) mount.
Venus 9mm F2.8 Zero-D is also available in Fujifilm X and Sony E mounts.
Focal Range
Tokina Opera 16-28mm F2.8 FF has a focal range of 16-28mm and
1.8X zoom ratio . When it is mounted on an APS-C sensor camera with 1.6x crop, it provides a 35mm (FF) equivalent of
25.6 - 44.8mm.
On the other hand, the Venus 9mm F2.8 Zero-D is a prime lens with fixed focal lenght of 9mm which has an effective (full-frame 35mm equivalent) focal range of 13.5mm when used on a APS-C / DX format camera.