The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Zeiss Otus 85mm f1.4 and the Panasonic 35-100mm F4.0-5.6 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. Zeiss Otus 85mm f1.4 is the longer of the two lenses at 128mm. The Panasonic 35-100mm F4.0-5.6 with a length of 50mm, is 78mm shorter. Besides being longer, the Zeiss Otus 85mm f1.4 also has a larger diameter of 88mm compared to the Panasonic 35-100mm F4.0-5.6's 56mm 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. Panasonic 35-100mm F4.0-5.6 weighs 135g, 87% (905g) lighter than the Zeiss Otus 85mm f1.4's weight of 1040g.
Filter Threads
The Zeiss Otus 85mm f1.4 has a filter size of 77mm whereas the Panasonic 35-100mm F4.0-5.6 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 77mm filters that we recommend you to consider for the Zeiss Otus 85mm f1.4:
And these are the 46mm filters that we recommend for the Panasonic 35-100mm F4.0-5.6:
Lens Mounts
The Zeiss Otus 85mm f1.4 has the Sony E lens mount whereas the Panasonic 35-100mm F4.0-5.6 has the Micro Four Thirds 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 OM System OM-3 Astro, OM System OM-5 II and OM System OM-3 for the Micro Four Thirds Mount.
Zeiss Otus 85mm f1.4 is also available in the Canon EF , Nikon F (FX), Canon RF and Nikon Z mounts.
Focal Range
Zeiss Otus 85mm f1.4 is a prime lens with fixed focal lenght of 85mm. When it is mounted on an APS-C sensor camera with 1.5x crop, it provides a 35mm (FF) equivalent of
127.5mm.
On the other hand, the Panasonic 35-100mm F4.0-5.6 has a focal range of 35-100mm and 2.9X zoom ratio which has an effective (full-frame 35mm equivalent) focal range of 70-200mm when used on a FourThirds format camera.
