The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Kase 85mm F1.4 and the Leica APO-SL 90mm F2 ASPH 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 APO-SL 90mm F2 ASPH is the longer of the two lenses at 102mm. The Kase 85mm F1.4 with a length of 99mm, is 3mm shorter. On the other hand, the Kase 85mm F1.4 has a larger diameter of 82mm compared to the Leica APO-SL 90mm F2 ASPH's 73mm diameter.
Below you can find a scaled side-by-side image of Kase 85mm F1.4 and Leica APO-SL 90mm F2 ASPH to get a better idea of how their sizes compare in real life.
Comparison image of the Kase 85mm F1.4 and the Leica APO-SL 90mm F2 ASPH 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. Kase 85mm F1.4 weighs 580g, which means it is 120g (17%) lighter than the Leica APO-SL 90mm F2 ASPH which has a weight of 700g.
Below you can find the dimension and weight table of the Telephoto Prime Lenses in Leica L Mount for size comparison purposes.
Telephoto Leica L Mount
Filter Threads
The Kase 85mm F1.4 has a filter size of 72mm whereas the Leica APO-SL 90mm F2 ASPH has a 67mm diameter. Larger filters are generally more expensive than the smaller ones given all the other features are equal.
Below are links to the 72mm filters that we recommend you to consider for the Kase 85mm F1.4:
And these are the 67mm filters that we recommend for the Leica APO-SL 90mm F2 ASPH:
Lens Mounts
Both the Kase 85mm F1.4 and the Leica APO-SL 90mm F2 ASPH 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 .
Sony E , Nikon Z and Fujifilm X mounts.
Focal Range
Kase 85mm F1.4 is a prime lens with fixed focal lenght of 85mm. When it is mounted on an APS-C sensor camera with 1.5x crop, it provides a 35mm (FF) equivalent of
127.5mm .
On the other hand, the Leica APO-SL 90mm F2 ASPH is a prime lens with fixed focal lenght of 90mm.
