The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Sigma 28mm F1.4 DG HSM A and the Sigma 24mm F1.8 EX DG for their suitability to various photography scenarios:
Size and Weight Comparison
Size of a lens is an important deciding factor when comparing two lenses.Sigma 28mm F1.4 DG HSM A is the longer of the two lenses at 108mm. The Sigma 24mm F1.8 EX DG with a length of 83mm is 25mm shorter. On the other hand, the Sigma 24mm F1.8 EX DG has a larger diameter of 84mm compared to Sigma 28mm F1.4 DG HSM A's 83mm diameter.
Weight of a lens is as important as its external dimensions, especially if you are planning to hand hold your camera and lens combination for longer periods.
Below you can find the dimension and weight table of the 'Wideangle Prime Lenses in Sigma SA Mount for size comparison purposes.
Wideangle Prime Lenses in Sigma SA Mount for Size Comparison
Both Sigma 28mm F1.4 DG HSM A and Sigma 24mm F1.8 EX DG has the same Sigma SA lens mount. Some of the latest released cameras that are compatible with the Sigma SA lenses are Sigma Quattro, Sigma Quattro H and Sigma SD1 Merrill.
Sigma 28mm F1.4 DG HSM A is also available in Canon EF , Nikon F (FX), Sony E and Leica L mounts.
Sigma 24mm F1.8 EX DG is also available in Canon EF , Nikon F (FX), Four Thirds, Pentax KAF, Sony Alpha, Sigma SA, Canon EF, Pentax KAF, Sony Alpha and Nikon F (FX) mounts.