The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Pentax 35mm F2.8 Macro L and the Canon 90-300mm f4.5-5.6 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 90-300mm f4.5-5.6 is the longer of the two lenses at 115mm. The Pentax 35mm F2.8 Macro L with a length of 47mm, is 68mm shorter. Besides being longer, the Canon 90-300mm f4.5-5.6 also has a larger diameter of 71mm compared to the Pentax 35mm F2.8 Macro L'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 35mm F2.8 Macro L weighs 215g, which means it is 205g (48%) lighter than the Canon 90-300mm f4.5-5.6 which has a weight of 420g.
Filter Threads
The Pentax 35mm F2.8 Macro L has a filter size of 49mm whereas the Canon 90-300mm f4.5-5.6 has a 58mm diameter. Larger filters are generally more expensive than the smaller ones given all the other features are equal.
Below are links to the 49mm filters that we recommend you to consider for the Pentax 35mm F2.8 Macro L:
And these are the 58mm filters that we recommend for the Canon 90-300mm f4.5-5.6:
Lens Mounts
The Pentax 35mm F2.8 Macro L has the Pentax KAF lens mount whereas the Canon 90-300mm f4.5-5.6 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.
Pentax 35mm F2.8 Macro L is also available in the Pentax KAF mount.
Focal Range
Pentax 35mm F2.8 Macro L is a prime lens with fixed focal lenght of 35mm which has an effective (full-frame 35mm equivalent) focal range of
52.5mm when used on a APS-C / DX format camera.
On the other hand, the Canon 90-300mm f4.5-5.6 has a focal range of 90-300mm and 3.3X zoom ratio . When it is mounted on an APS-C sensor camera with 1.6x crop, it provides a 35mm (FF) equivalent of 144 - 480mm.
