The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Samyang MF 14mm F2.8 Mk2 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. Samyang MF 14mm F2.8 Mk2 is the longer of the two lenses at 96mm. The Panasonic 20mm F1.7 II ASPH with a length of 26mm, is 70mm shorter. Besides being longer, the Samyang MF 14mm F2.8 Mk2 also has a larger diameter of 87mm compared to the Panasonic 20mm F1.7 II ASPH's 63mm 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 20mm F1.7 II ASPH weighs 87g, 86% (562g) lighter than the Samyang MF 14mm F2.8 Mk2's weight of 649g.
Lens Mounts
Both the Samyang MF 14mm F2.8 Mk2 and the Panasonic 20mm F1.7 II ASPH has the same Micro Four Thirds lens mount. Some of the latest released cameras that are compatible with the Micro Four Thirds lenses are OM System OM-1 II, Panasonic G9 II and OM System OM-5.
Samyang MF 14mm F2.8 Mk2 is also available in Canon EF , Canon EF-M, Fujifilm X, Nikon F (FX) and Sony E mounts.
Focal Range
Samyang MF 14mm F2.8 Mk2 is a prime lens with fixed focal lenght of 14mm.
On the other hand, the Panasonic 20mm F1.7 II ASPH is a prime lens with fixed focal lenght of 20mm which has an effective (full-frame 35mm equivalent) focal range of 40mm when used on a FourThirds format camera.