The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Canon RF 75-300mm f4.0-5.6 and the Tamron 70-300 F4.5-6.3 Di III Z 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. Tamron 70-300 F4.5-6.3 Di III Z is the longer of the two lenses at 148mm. The Canon RF 75-300mm f4.0-5.6 with a length of 146mm, is 2mm shorter. Besides being longer, the Tamron 70-300 F4.5-6.3 Di III Z also has a larger diameter of 77mm compared to the Canon RF 75-300mm f4.0-5.6's 71mm diameter.
Below you can find a scaled side-by-side image of Canon RF 75-300mm f4.0-5.6 and Tamron 70-300 F4.5-6.3 Di III Z to get a better idea of how their sizes compare in real life.
Comparison image of the Canon RF 75-300mm f4.0-5.6 and the Tamron 70-300 F4.5-6.3 Di III Z 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 75-300mm f4.0-5.6 weighs 507g, which means it is 38g (6%) lighter than the Tamron 70-300 F4.5-6.3 Di III Z which has a weight of 545g.
Filter Threads
The Canon RF 75-300mm f4.0-5.6 has a filter size of 58mm whereas the Tamron 70-300 F4.5-6.3 Di III Z has a 67mm diameter. Larger filters are generally more expensive than the smaller ones given all the other features are equal.
Below are links to the 58mm filters that we recommend you to consider for the Canon RF 75-300mm f4.0-5.6:
And these are the 67mm filters that we recommend for the Tamron 70-300 F4.5-6.3 Di III Z:
Lens Mounts
The Canon RF 75-300mm f4.0-5.6 has the Canon RF lens mount whereas the Tamron 70-300 F4.5-6.3 Di III Z has the Nikon Z lens mount . Some of the latest released cameras that are compatible with these mounts are Canon R6 V , Canon R6 III and Canon C50 for the Canon RF Mount and Nikon ZR , Nikon Z5 II and RED Komodo-X 6K Z for the Nikon Z Mount.
Focal Range
Canon RF 75-300mm f4.0-5.6 has a focal range of 75-300mm and
4.0X zoom ratio . When it is mounted on an APS-C sensor camera with 1.6x crop, it provides a 35mm (FF) equivalent of
120 - 480mm .
On the other hand, the Tamron 70-300 F4.5-6.3 Di III Z has a focal range of 70-300mm and 4.3X zoom ratio . When it is mounted on an APS-C sensor camera with 1.5x crop, it provides a 35mm (FF) equivalent of 105 - 450mm .
