Without a doubt, the 24mm f/1.4 GM lens is one of Sony’s finest optical achievements, and for me it represents a turning point in their lens design process. Every FE lens that launched after this lens showed signs of significant improvement in optical design and autofocus speed. In fact when this lens launched, it was one of the things that finally grabbed my attention and set me on a path to move from Canon to Sony for my primary work setup.
A full review will be forthcoming, but in the meantime please enjoy this gallery of images. As you can see, this is a very small lens for a wide-angle f/1.4 prime.
Compared to the Sony FE 20mm f/1.8 G
The Sony 20mm f/1.8 G is very similar in look to the 24mm GM. The 20mm G lens shard the same styling, aperture ring, de-click switch and customizable button. The 24mm GM is a little larger and a little heavier, and comes with a metal filter thread where the cheaper 20mm G lens has a plastic thread. The 24mm GM also comes with a much nicer lens case and a slightly larger and more robust feeling lens hood. Personally I own both of these lenses.