The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Canon 24-105mm f4L IS USM and the PENTAX28-105mm F3.5-5.6 WR 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 24-105mm f4L IS USM is the longer of the two lenses at 107mm. The PENTAX28-105mm F3.5-5.6 WR with a length of 87mm, is 20mm shorter. Besides being longer, the Canon 24-105mm f4L IS USM also has a larger diameter of 84mm compared to the PENTAX28-105mm F3.5-5.6 WR's 73mm diameter.
Below you can find a scaled side-by-side image of Canon 24-105mm f4L IS USM and PENTAX28-105mm F3.5-5.6 WR to get a better idea of how their sizes compare in real life.
Comparison image of the Canon 24-105mm f4L IS USM and the PENTAX28-105mm F3.5-5.6 WR 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. PENTAX28-105mm F3.5-5.6 WR weighs 440g, 34% (230g) lighter than the Canon 24-105mm f4L IS USM's weight of 670g.
Filter Threads
The Canon 24-105mm f4L IS USM has a filter size of 77mm whereas the PENTAX28-105mm F3.5-5.6 WR has a 62mm diameter. Larger filters are generally more expensive than the smaller ones given all the other features are equal.
Below are links to the 77mm filters that we recommend you to consider for the Canon 24-105mm f4L IS USM:
And these are the 62mm filters that we recommend for the PENTAX28-105mm F3.5-5.6 WR:
Lens Mounts
The Canon 24-105mm f4L IS USM has the Canon EF lens mount whereas the PENTAX28-105mm F3.5-5.6 WR has the Pentax KAF3 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 Pentax K-3 III Mono , Pentax KF and Pentax K-3 III for the Pentax KAF3 Mount.
Focal Range
Canon 24-105mm f4L IS USM has a focal range of 24-105mm and
4.4X zoom ratio . When it is mounted on an APS-C sensor camera with 1.6x crop, it provides a 35mm (FF) equivalent of
38.4 - 168mm .
On the other hand, the PENTAX28-105mm F3.5-5.6 WR has a focal range of 28-105mm and 3.8X zoom ratio . When it is mounted on an APS-C sensor camera with 1.5x crop, it provides a 35mm (FF) equivalent of 42 - 157.5mm .
