The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Canon EF-S 35mm F2.8 Macro IS STM and the Voigtlander 40mm F2 SL II 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 EF-S 35mm F2.8 Macro IS STM is the longer of the two lenses at 56mm. The Voigtlander 40mm F2 SL II with a length of 25mm, is 31mm shorter. Besides being longer, the Canon EF-S 35mm F2.8 Macro IS STM also has a larger diameter of 69mm compared to the Voigtlander 40mm F2 SL II'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. Canon EF-S 35mm F2.8 Macro IS STM weighs 190g, which means it is 10g (5%) lighter than the Voigtlander 40mm F2 SL II which has a weight of 200g.
Filter Threads
The Canon EF-S 35mm F2.8 Macro IS STM has a filter size of 49mm whereas the Voigtlander 40mm F2 SL II has a 52mm 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 Canon EF-S 35mm F2.8 Macro IS STM:
And these are the 52mm filters that we recommend for the Voigtlander 40mm F2 SL II:
Lens Mounts
The Canon EF-S 35mm F2.8 Macro IS STM has the Canon EF-S lens mount whereas the Voigtlander 40mm F2 SL II has the Canon EF lens mount. Some of the latest released cameras that are compatible with these mounts are Canon T8i, Canon 90D and Canon SL3 for the Canon EF-S Mount and Canon 1D X III, Canon 6D MII and Canon 5D MIV for the Canon EF Mount.
Voigtlander 40mm F2 SL II is also available in Nikon F (FX) and Pentax KAF mounts.
Focal Range
Canon EF-S 35mm F2.8 Macro IS STM is a prime lens with fixed focal lenght of 35mm which has an effective (full-frame 35mm equivalent) focal range of
56mm when used on a APS-C / DX format camera.
On the other hand, the Voigtlander 40mm F2 SL II is a prime lens with fixed focal lenght of 40mm. When it is mounted on an APS-C sensor camera with 1.6x crop, it provides a 35mm (FF) equivalent of 64mm.