The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Carl Zeiss Distagon T2/25 and the Carl Zeiss Biogon T2,8/25 ZM 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. Carl Zeiss Distagon T2/25 is the longer of the two lenses at 98mm. The Carl Zeiss Biogon T2,8/25 ZM with a length of 71mm, is 27mm shorter. Besides being longer, the Carl Zeiss Distagon T2/25 also has a larger diameter of 73mm compared to the Carl Zeiss Biogon T2,8/25 ZM's 53mm 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. Carl Zeiss Biogon T2,8/25 ZM weighs 260g, 56% (340g) lighter than the Carl Zeiss Distagon T2/25's weight of 600g.
Filter Threads
The Carl Zeiss Distagon T2/25 has a filter size of 67mm whereas the Carl Zeiss Biogon T2,8/25 ZM has a 46mm diameter. Larger filters are generally more expensive than the smaller ones given all the other features are equal.
Below are links to the 67mm filters that we recommend you to consider for the Carl Zeiss Distagon T2/25:
And these are the 46mm filters that we recommend for the Carl Zeiss Biogon T2,8/25 ZM:
Lens Mounts
The Carl Zeiss Distagon T2/25 has the Canon EF lens mount whereas the Carl Zeiss Biogon T2,8/25 ZM has the Leica M lens mount. Some of the latest released cameras that are compatible with these mounts are Blackmagic URSA 12K LF, Z CAM E2-F6 II 6K and Z CAM E2-S6 II 6K for the Canon EF Mount and Leica M EV1, Leica M11-D and Pixii Max for the Leica M Mount.
Carl Zeiss Distagon T2/25 is also available in the Nikon F (FX) mount.
Focal Range
Both lenses have the same focal range of
25mm but while Carl Zeiss Distagon T2/25 has the fastest aperture of
F2, the Carl Zeiss Biogon T2,8/25 ZM's widest aperture value is
F2.8.
