The type of photography that you are planning to use is an important decision factor. Here we have evaluated the OM ED 20mm F1.4 Pro 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. OM ED 20mm F1.4 Pro is the longer of the two lenses at 62mm. The Panasonic 20mm F1.7 II ASPH with a length of 26mm, is 36mm 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. Panasonic 20mm F1.7 II ASPH weighs 87g, 64% (160g) lighter than the OM ED 20mm F1.4 Pro's weight of 247g.
Filter Threads
The OM ED 20mm F1.4 Pro has a filter size of 58mm 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 58mm filters that we recommend you to consider for the OM ED 20mm F1.4 Pro:
And these are the 46mm filters that we recommend for the Panasonic 20mm F1.7 II ASPH:
Lens Mounts
Both the OM ED 20mm F1.4 Pro 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-3 Astro, OM System OM-5 II and OM System OM-3.
Focal Range
Both lenses have the same focal range of
20mm but while OM ED 20mm F1.4 Pro has the fastest aperture of
F1.4, the Panasonic 20mm F1.7 II ASPH's widest aperture value is
F1.7.
