The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Pergear 50mm F1.2 APS-C and the Panasonic Leica 15mm F1.7 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. Pergear 50mm F1.2 APS-C is the longer of the two lenses at 61mm. The Panasonic Leica 15mm F1.7 with a length of 36mm, is 25mm shorter. Besides being longer, the Pergear 50mm F1.2 APS-C also has a larger diameter of 59mm compared to the Panasonic Leica 15mm F1.7's 58mm 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 Leica 15mm F1.7 weighs 115g, 68% (245g) lighter than the Pergear 50mm F1.2 APS-C's weight of 360g.
Filter Threads
The Pergear 50mm F1.2 APS-C has a filter size of 55mm whereas the Panasonic Leica 15mm F1.7 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 55mm filters that we recommend you to consider for the Pergear 50mm F1.2 APS-C:
And these are the 46mm filters that we recommend for the Panasonic Leica 15mm F1.7:
Lens Mounts
The Pergear 50mm F1.2 APS-C has the Sony E lens mount whereas the Panasonic Leica 15mm F1.7 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.
Pergear 50mm F1.2 APS-C is also available in the Fujifilm X , Nikon Z, Canon RF and Micro Four Thirds mounts.
Focal Range
Pergear 50mm F1.2 APS-C is a prime lens with fixed focal lenght of 50mm which has an effective (full-frame 35mm equivalent) focal range of
75mm when used on a APS-C / DX format camera.
On the other hand, the Panasonic Leica 15mm F1.7 is a prime lens with fixed focal lenght of 15mm which has an effective (full-frame 35mm equivalent) focal range of 30mm when used on a FourThirds format camera.