The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Leica SL 24-70mm F2.8 and the Leica SL 24-90mm F2.8-4 ASPH for their suitability to various photography scenarios:
Size and Weight Comparison
The size of a lens is an important deciding factor when comparing two lenses. Leica SL 24-90mm F2.8-4 ASPH is the longer of the two lenses at 138mm. The Leica SL 24-70mm F2.8 with a length of 123mm, is 15mm shorter. On the other hand, there is no difference between the max diameters of these lenses, both coming at 88mm.
The 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. Leica SL 24-70mm F2.8 weighs 856g, which means it is 284g (24%) lighter than the Leica SL 24-90mm F2.8-4 ASPH which has a weight of 1140g.
Below you can find the dimension and weight table of the Standard Zoom Lenses in Leica L Mount for size comparison purposes.
Standard Zoom Lenses in Leica L Mount for Size Comparison
Both the Leica SL 24-70mm F2.8 and the Leica SL 24-90mm F2.8-4 ASPH has the same Leica L lens mount. Some of the latest released cameras that are compatible with the Leica L lenses are Panasonic S5 II, Panasonic S5 II X and Sigma fp L.
Leica SL 24-70mm F2.8 has a focal range of 24-70mm and 2.9X zoom ratio . Leica SL 24-90mm F2.8-4 ASPH has a focal range of 24-90mm and 3.8X zoom ratio .