The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Canon RF 85mm F2 Macro IS STM and the Sigma 70mm F2.8 DG Macro 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. Sigma 70mm F2.8 DG Macro is the longer of the two lenses at 106mm. The Canon RF 85mm F2 Macro IS STM with a length of 91mm, is 15mm shorter. On the other hand, the Canon RF 85mm F2 Macro IS STM has a larger diameter of 78mm compared to the Sigma 70mm F2.8 DG Macro's 71mm diameter.
Below you can find a scaled side-by-side image of Canon RF 85mm F2 Macro IS STM and Sigma 70mm F2.8 DG Macro to get a better idea of how their sizes compare in real life.
Comparison image of the Canon RF 85mm F2 Macro IS STM and the Sigma 70mm F2.8 DG Macro 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 85mm F2 Macro IS STM weighs 500g, which means it is 15g (2%) lighter than the Sigma 70mm F2.8 DG Macro which has a weight of 515g.
Filter Threads
The Canon RF 85mm F2 Macro IS STM has a filter size of 67mm whereas the Sigma 70mm F2.8 DG Macro has a 49mm diameter. Larger filters are generally more expensive than the smaller ones given all the other features are equal.
Below are links to the 67mm filters that we recommend you to consider for the Canon RF 85mm F2 Macro IS STM:
And these are the 49mm filters that we recommend for the Sigma 70mm F2.8 DG Macro:
Lens Mounts
The Canon RF 85mm F2 Macro IS STM has the Canon RF lens mount whereas the Sigma 70mm F2.8 DG Macro has the Canon EF 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 Blackmagic URSA 12K LF , Z CAM E2-F6 II 6K and Z CAM E2-S6 II 6K for the Canon EF Mount.
Nikon F (FX) , Sigma SA and Sony E mounts.
Focal Range
Canon RF 85mm F2 Macro IS STM is a prime lens with fixed focal lenght of 85mm. When it is mounted on an APS-C sensor camera with 1.6x crop, it provides a 35mm (FF) equivalent of
136mm .
On the other hand, the Sigma 70mm F2.8 DG Macro is a prime lens with fixed focal lenght of 70mm. When it is mounted on an APS-C sensor camera with 1.6x crop, it provides a 35mm (FF) equivalent of 112mm .
