The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Sigma 15mm f1.4 DC C and the Sigma 12mm f1.4 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 12mm f1.4 is the longer of the two lenses at 69mm. The Sigma 15mm f1.4 DC C with a length of 65mm, is 4mm shorter. Besides being longer, the Sigma 12mm f1.4 also has a larger diameter of 68mm compared to the Sigma 15mm f1.4 DC C's 64mm diameter.
Below you can find a scaled side-by-side image of Sigma 15mm f1.4 DC C and Sigma 12mm f1.4 to get a better idea of how their sizes compare in real life.
Comparison image of the Sigma 15mm f1.4 DC C and the Sigma 12mm f1.4 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. Sigma 15mm f1.4 DC C weighs 220g, which means it is 5g (2%) lighter than the Sigma 12mm f1.4 which has a weight of 225g.
Filter Threads
The Sigma 15mm f1.4 DC C has a filter size of 58mm whereas the Sigma 12mm f1.4 has a 62mm 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 Sigma 15mm f1.4 DC C:
And these are the 62mm filters that we recommend for the Sigma 12mm f1.4:
Lens Mounts
Both the Sigma 15mm f1.4 DC C and the Sigma 12mm f1.4 has the same Sony E lens mount . Some of the latest released cameras that are compatible with the Sony E lenses are Sony ZV-E10 II , Sony A6700 and Sony FX30 .
Sigma 15mm f1.4 DC C is also available in the Canon RF and Fujifilm X mounts.
Sigma 12mm f1.4 is also available in Fujifilm X and Canon RF mounts.
Focal Range
Sigma 15mm f1.4 DC C is a prime lens with fixed focal lenght of 15mm which has an effective (full-frame 35mm equivalent) focal range of
22.5mm when used on a APS-C / DX format camera.
On the other hand, the Sigma 12mm f1.4 is a prime lens with fixed focal lenght of 12mm which has an effective (full-frame 35mm equivalent) focal range of 18mm when used on a APS-C / DX format camera.