The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Leica Summarit-M 90mm f2.5 and the Leica Macro-Elmar-M 90mm f4 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 Summarit-M 90mm f2.5 is the longer of the two lenses at 67mm. The Leica Macro-Elmar-M 90mm f4 with a length of 41mm, is 26mm shorter. Besides being longer, the Leica Summarit-M 90mm f2.5 also has a larger diameter of 55mm compared to the Leica Macro-Elmar-M 90mm f4's 52mm diameter.
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 Macro-Elmar-M 90mm f4 weighs 240g, 33% (120g) lighter than the Leica Summarit-M 90mm f2.5's weight of 360g.
Both the Leica Summarit-M 90mm f2.5 and the Leica Macro-Elmar-M 90mm f4 has the same Leica M lens mount. Some of the latest released cameras that are compatible with the Leica M lenses are Leica M11, Leica M10 and Leica M Typ 262.
Both lenses have the same focal range of 90mm but while Leica Summarit-M 90mm f2.5 has the fastest aperture of F2.5, the Leica Macro-Elmar-M 90mm f4's widest aperture value is F4.0.