The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Sony E 20mm F2.8 and the Panasonic 20mm F1.7 II ASPH 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. Panasonic 20mm F1.7 II ASPH is the longer of the two lenses at 26mm. The Sony E 20mm F2.8 with a length of 20mm, is 6mm shorter. On the other hand, there is no difference between the max diameters of these lenses, both coming at 63mm.
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 E 20mm F2.8 weighs 69g, which means it is 18g (20%) lighter than the Panasonic 20mm F1.7 II ASPH which has a weight of 87g.
Filter Threads
The Sony E 20mm F2.8 has a filter size of 49mm whereas the Panasonic 20mm F1.7 II ASPH 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 49mm filters that we recommend you to consider for the Sony E 20mm F2.8:
And these are the 46mm filters that we recommend for the Panasonic 20mm F1.7 II ASPH:
Lens Mounts
The Sony E 20mm F2.8 has the Sony E lens mount whereas the Panasonic 20mm F1.7 II ASPH has the Micro Four Thirds lens mount. Some of the latest released cameras that are compatible with these mounts are Sony ZV-E10 II, Sony A6700 and Sony FX30 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.
Focal Range
Both lenses have the same focal range of
20mm but while Sony E 20mm F2.8 has the fastest aperture of
F2.8, the Panasonic 20mm F1.7 II ASPH's widest aperture value is
F1.7.
