The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Leica Noctilux-M 50mm f1.2 and the Leica Summarit-M 50mm f2.5 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 Noctilux-M 50mm f1.2 is the longer of the two lenses at 52mm. The Leica Summarit-M 50mm f2.5 with a length of 33mm, is 19mm shorter. Besides being longer, the Leica Noctilux-M 50mm f1.2 also has a larger diameter of 61mm compared to the Leica Summarit-M 50mm f2.5's 52mm 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 Summarit-M 50mm f2.5 weighs 230g, 43% (175g) lighter than the Leica Noctilux-M 50mm f1.2's weight of 405g.
Below you can find the dimension and weight table of the Standard Prime Lenses in Leica M Mount for size comparison purposes.
Standard Lenses in Leica M Mount for Size Comparison
Filter Threads
The Leica Noctilux-M 50mm f1.2 has a filter size of 49mm whereas the Leica Summarit-M 50mm f2.5 has a 39mm diameter. Larger filters are generally more expensive than the smaller ones given all the other features are equal.
Below are links to the 49mm filters that we recommend you to consider for the Leica Noctilux-M 50mm f1.2:
And these are the 39mm filters that we recommend for the Leica Summarit-M 50mm f2.5:
Lens Mounts
Both the Leica Noctilux-M 50mm f1.2 and the Leica Summarit-M 50mm f2.5 has the same Leica M lens mount. Some of the latest released cameras that are compatible with the Leica M lenses are Leica M EV1, Leica M11-D and Pixii Max.
Focal Range
Both lenses have the same focal range of
50mm but while Leica Noctilux-M 50mm f1.2 has the fastest aperture of
F1.2, the Leica Summarit-M 50mm f2.5's widest aperture value is
F2.5.
