The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Canon RF 35mm F1.8 IS STM Macro and the Sigma 50mm F2.8 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 50mm F2.8 Macro is the longer of the two lenses at 67mm. The Canon RF 35mm F1.8 IS STM Macro with a length of 63mm, is 4mm shorter. On the other hand, the Canon RF 35mm F1.8 IS STM Macro has a larger diameter of 74mm compared to the Sigma 50mm F2.8 Macro's 71mm 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. Canon RF 35mm F1.8 IS STM Macro weighs 305g, which means it is 15g (4%) lighter than the Sigma 50mm F2.8 Macro which has a weight of 320g.
Filter Threads
The Canon RF 35mm F1.8 IS STM Macro has a filter size of 52mm whereas the Sigma 50mm F2.8 Macro has a 55mm diameter. Larger filters are generally more expensive than the smaller ones given all the other features are equal.
Below are links to the 52mm filters that we recommend you to consider for the Canon RF 35mm F1.8 IS STM Macro:
And these are the 55mm filters that we recommend for the Sigma 50mm F2.8 Macro:
Lens Mounts
The Canon RF 35mm F1.8 IS STM Macro has the Canon RF lens mount whereas the Sigma 50mm F2.8 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.
Sigma 50mm F2.8 Macro is also available in Pentax KAF , Sony Alpha, Sigma SA and Nikon F (FX) mounts.
Focal Range
Canon RF 35mm F1.8 IS STM Macro is a prime lens with fixed focal lenght of 35mm. When it is mounted on an APS-C sensor camera with 1.6x crop, it provides a 35mm (FF) equivalent of
56mm.
On the other hand, the Sigma 50mm F2.8 Macro is a prime lens with fixed focal lenght of 50mm. When it is mounted on an APS-C sensor camera with 1.6x crop, it provides a 35mm (FF) equivalent of 80mm.
