The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Pentax 40mm F2.8 XS Lens and the Canon 40mm 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. Canon 40mm f2.8 STM is the longer of the two lenses at 22mm. The Pentax 40mm F2.8 XS Lens with a length of 9mm, is 13mm shorter. Besides being longer, the Canon 40mm f2.8 STM also has a larger diameter of 68mm compared to the Pentax 40mm F2.8 XS Lens's 63mm 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. Pentax 40mm F2.8 XS Lens weighs 45g, which means it is 85g (65%) lighter than the Canon 40mm f2.8 STM which has a weight of 130g.
Lens Mounts
The Pentax 40mm F2.8 XS Lens has the Pentax KAF lens mount whereas the Canon 40mm f2.8 STM has the Canon EF lens mount. Some of the latest released cameras that are compatible with these mounts are Pentax K-3 III Mono, Pentax KF and Pentax K-3 III for the Pentax KAF Mount and Blackmagic URSA 12K LF, Z CAM E2-F6 II 6K and Z CAM E2-S6 II 6K for the Canon EF Mount.
Focal Range
Both lenses have the same focal range of
40mm and the fastest aperture of
F2.8.
