The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Sigma 23mm F1.4 C and the Thypoch 28mm F1.4 RF 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 23mm F1.4 C is the longer of the two lenses at 79mm. The Thypoch 28mm F1.4 RF with a length of 69mm, is 10mm shorter. Besides being longer, the Sigma 23mm F1.4 C also has a larger diameter of 66mm compared to the Thypoch 28mm F1.4 RF's 54mm 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. Sigma 23mm F1.4 C weighs 330g, which means it is 23g (6%) lighter than the Thypoch 28mm F1.4 RF which has a weight of 353g.
Below you can find the dimension and weight table of the Wideangle Prime Lenses in Canon RF Mount for size comparison purposes.
Wideangle Lenses in Canon RF Mount for Size Comparison
Filter Threads
The Sigma 23mm F1.4 C has a filter size of 52mm whereas the Thypoch 28mm F1.4 RF 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 52mm filters that we recommend you to consider for the Sigma 23mm F1.4 C:
And these are the 49mm filters that we recommend for the Thypoch 28mm F1.4 RF:
Lens Mounts
Both the Sigma 23mm F1.4 C and the Thypoch 28mm F1.4 RF has the same Canon RF lens mount. Some of the latest released cameras that are compatible with the Canon RF lenses are Canon R50 V, Canon R100 and Canon R50.
Focal Range
Sigma 23mm F1.4 C is a prime lens with fixed focal lenght of 23mm which has an effective (full-frame 35mm equivalent) focal range of
36.8mm when used on a APS-C / DX format camera.
On the other hand, the Thypoch 28mm F1.4 RF is a prime lens with fixed focal lenght of 28mm which has an effective (full-frame 35mm equivalent) focal range of 42mm when used on a 35mm FF format camera.
