The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Samyang 12mm f2.0 and the Panasonic 14mm F2.5 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 12mm f2.0 is the longer of the two lenses at 59mm. The Panasonic 14mm F2.5 ASPH with a length of 21mm, is 38mm shorter. Besides being longer, the Samyang 12mm f2.0 also has a larger diameter of 73mm compared to the Panasonic 14mm F2.5 ASPH'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 14mm F2.5 ASPH weighs 55g, 78% (205g) lighter than the Samyang 12mm f2.0's weight of 260g.
Filter Threads
The Samyang 12mm f2.0 has a filter size of 67mm whereas the Panasonic 14mm F2.5 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 67mm filters that we recommend you to consider for the Samyang 12mm f2.0:
And these are the 46mm filters that we recommend for the Panasonic 14mm F2.5 ASPH:
Lens Mounts
Both the Samyang 12mm f2.0 and the Panasonic 14mm F2.5 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 , and .
Samyang 12mm f2.0 is also available in Canon EF-M , Fujifilm X, Sony E and Samsung NX mounts.
Focal Range
Samyang 12mm f2.0 is a prime lens with fixed focal lenght of 12mm which has an effective (full-frame 35mm equivalent) focal range of
18mm when used on a APS-C / DX format camera.
On the other hand, the Panasonic 14mm F2.5 ASPH is a prime lens with fixed focal lenght of 14mm which has an effective (full-frame 35mm equivalent) focal range of 28mm when used on a FourThirds format camera.