The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Olympus 17mm F1.2 Pro and the Carl Zeiss Distagon T4/18 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. Olympus 17mm F1.2 Pro is the longer of the two lenses at 87mm. The Carl Zeiss Distagon T4/18 ZM with a length of 71mm, is 16mm shorter. Besides being longer, the Olympus 17mm F1.2 Pro also has a larger diameter of 68mm compared to the Carl Zeiss Distagon T4/18 ZM's 65mm 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 Distagon T4/18 ZM weighs 350g, 10% (40g) lighter than the Olympus 17mm F1.2 Pro's weight of 390g.
Filter Threads
The Olympus 17mm F1.2 Pro has a filter size of 62mm whereas the Carl Zeiss Distagon T4/18 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 62mm filters that we recommend you to consider for the Olympus 17mm F1.2 Pro:
And these are the 58mm filters that we recommend for the Carl Zeiss Distagon T4/18 ZM:
Lens Mounts
The Olympus 17mm F1.2 Pro has the Micro Four Thirds lens mount whereas the Carl Zeiss Distagon T4/18 ZM has the Leica M lens mount. Some of the latest released cameras that are compatible with these mounts are OM System OM-3 Astro, OM System OM-5 II and OM System OM-3 for the Micro Four Thirds Mount and Leica M EV1, Leica M11-D and Pixii Max for the Leica M Mount.
Focal Range
Olympus 17mm F1.2 Pro is a prime lens with fixed focal lenght of 17mm which has an effective (full-frame 35mm equivalent) focal range of
34mm when used on a FourThirds format camera.
On the other hand, the Carl Zeiss Distagon T4/18 ZM is a prime lens with fixed focal lenght of 18mm.