The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Sigma 24mm F1.4 DG HSM A and the Sigma 18-35mm F1.8 DC HSM 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 18-35mm F1.8 DC HSM is the longer of the two lenses at 121mm. The Sigma 24mm F1.4 DG HSM A with a length of 90mm, is 31mm shorter. On the other hand, the Sigma 24mm F1.4 DG HSM A has a larger diameter of 85mm compared to the Sigma 18-35mm F1.8 DC HSM's 78mm diameter.
Below you can find a scaled side-by-side image of Sigma 24mm F1.4 DG HSM A and Sigma 18-35mm F1.8 DC HSM to get a better idea of how their sizes compare in real life.
Comparison image of the Sigma 24mm F1.4 DG HSM A and the Sigma 18-35mm F1.8 DC HSM 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 24mm F1.4 DG HSM A weighs 665g, which means it is 145g (17%) lighter than the Sigma 18-35mm F1.8 DC HSM which has a weight of 810g.
Filter Threads
The Sigma 24mm F1.4 DG HSM A has a filter size of 77mm whereas the Sigma 18-35mm F1.8 DC HSM has a 72mm diameter. Larger filters are generally more expensive than the smaller ones given all the other features are equal.
Below are links to the 77mm filters that we recommend you to consider for the Sigma 24mm F1.4 DG HSM A:
And these are the 72mm filters that we recommend for the Sigma 18-35mm F1.8 DC HSM:
Lens Mounts
The Sigma 24mm F1.4 DG HSM A has the Nikon F (FX) lens mount whereas the Sigma 18-35mm F1.8 DC HSM has the Pentax KAF lens mount . Some of the latest released cameras that are compatible with these mounts are Nikon D6 , Nikon D780 and Nikon D3500 for the Nikon F (FX) Mount and Pentax K-3 III Mono , Pentax KF and Pentax K-3 III for the Pentax KAF Mount.
Canon EF , Sigma SA and Leica L mounts.
Canon EF , Sony Alpha , Sigma SA and Nikon F (DX) mounts.
Focal Range
Sigma 24mm F1.4 DG HSM A is a prime lens with fixed focal lenght of 24mm. When it is mounted on an APS-C sensor camera with 1.5x crop, it provides a 35mm (FF) equivalent of
36mm .
On the other hand, the Sigma 18-35mm F1.8 DC HSM has a focal range of 18-35mm and 1.9X zoom ratio which has an effective (full-frame 35mm equivalent) focal range of 27-52.5mm when used on a APS-C / DX format camera.
