The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Sony FE 24-70mm F4 OSS and the Carl Zeiss Sonnar T2/85 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 Sonnar T2/85 ZM is the longer of the two lenses at 100mm. The Sony FE 24-70mm F4 OSS with a length of 95mm, is 5mm shorter. On the other hand, the Sony FE 24-70mm F4 OSS has a larger diameter of 73mm compared to the Carl Zeiss Sonnar T2/85 ZM's 70mm 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. Sony FE 24-70mm F4 OSS weighs 426g, which means it is 74g (14%) lighter than the Carl Zeiss Sonnar T2/85 ZM which has a weight of 500g.
Filter Threads
The Sony FE 24-70mm F4 OSS has a filter size of 67mm whereas the Carl Zeiss Sonnar T2/85 ZM has a 58mm 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 Sony FE 24-70mm F4 OSS:
And these are the 58mm filters that we recommend for the Carl Zeiss Sonnar T2/85 ZM:
Lens Mounts
The Sony FE 24-70mm F4 OSS has the Sony E lens mount whereas the Carl Zeiss Sonnar T2/85 ZM has the Leica M lens mount. Some of the latest released cameras that are compatible with these mounts are Sony FX5, Sony A7R VI and Sony A7 V for the Sony E Mount and Leica M EV1, Leica M11-D and Pixii Max for the Leica M Mount.
Focal Range
Sony FE 24-70mm F4 OSS has a focal range of 24-70mm and
2.9X zoom ratio . When it is mounted on an APS-C sensor camera with 1.5x crop, it provides a 35mm (FF) equivalent of
36 - 105mm.
On the other hand, the Carl Zeiss Sonnar T2/85 ZM is a prime lens with fixed focal lenght of 85mm.