The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Irix 11mm F4 and the Canon RF 16mm F2.8 STM 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. Irix 11mm F4 is the longer of the two lenses at 118mm. The Canon RF 16mm F2.8 STM with a length of 40mm, is 78mm shorter. Besides being longer, the Irix 11mm F4 also has a larger diameter of 103mm compared to the Canon RF 16mm F2.8 STM's 69mm diameter.
Below you can find a scaled side-by-side image of Irix 11mm F4 and Canon RF 16mm F2.8 STM to get a better idea of how their sizes compare in real life.
Comparison image of the Irix 11mm F4 and the Canon RF 16mm F2.8 STM Size and Weight 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. Canon RF 16mm F2.8 STM weighs 165g, 79% (625g) lighter than the Irix 11mm F4's weight of 790g.
Lens Mounts
The Irix 11mm F4 has the Canon EF lens mount whereas the Canon RF 16mm F2.8 STM has the Canon RF 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 Canon R6 V , Canon R6 III and Canon C50 for the Canon RF Mount.
Nikon F (FX) and Pentax KAF3 mounts.
Focal Range
Irix 11mm F4 is a prime lens with fixed focal lenght of 11mm.
On the other hand, the Canon RF 16mm F2.8 STM is a prime lens with fixed focal lenght of 16mm. When it is mounted on an APS-C sensor camera with 1.6x crop, it provides a 35mm (FF) equivalent of 25.6mm .
