The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Leica SL 24-90mm F2.8-4 ASPH and the Leica 18-56mm f3.5-5.6 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. Leica SL 24-90mm F2.8-4 ASPH is the longer of the two lenses at 138mm. The Leica 18-56mm f3.5-5.6 with a length of 60mm, is 78mm shorter. Besides being longer, the Leica SL 24-90mm F2.8-4 ASPH also has a larger diameter of 88mm compared to the Leica 18-56mm f3.5-5.6's 63mm diameter.
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. Leica 18-56mm f3.5-5.6 weighs 256g, 77% (884g) lighter than the Leica SL 24-90mm F2.8-4 ASPH's 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 Lenses in Leica L Mount for Size Comparison
Filter Threads
The Leica SL 24-90mm F2.8-4 ASPH has a filter size of 82mm whereas the Leica 18-56mm f3.5-5.6 has a 52mm diameter. Larger filters are generally more expensive than the smaller ones given all the other features are equal.
Below are links to the 82mm filters that we recommend you to consider for the Leica SL 24-90mm F2.8-4 ASPH:
And these are the 52mm filters that we recommend for the Leica 18-56mm f3.5-5.6:
Lens Mounts
Both the Leica SL 24-90mm F2.8-4 ASPH and the Leica 18-56mm f3.5-5.6 has the same Leica L lens mount. Some of the latest released cameras that are compatible with the Leica L lenses are Leica SL3-P, Panasonic S1 II and Panasonic S1 IIE.
Focal Range
Leica SL 24-90mm F2.8-4 ASPH has a focal range of 24-90mm and
3.8X zoom ratio .
On the other hand, the Leica 18-56mm f3.5-5.6 has a focal range of 18-56mm and 3.1X zoom ratio which has an effective (full-frame 35mm equivalent) focal range of 27-84mm when used on a APS-C / DX format camera.
