The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Panasonic 14-140mm F4-5.8 OIS 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 14-140mm F4-5.8 OIS is the longer of the two lenses at 84mm. The Panasonic 20mm F1.7 II ASPH with a length of 26mm, is 58mm shorter. Besides being longer, the Panasonic 14-140mm F4-5.8 OIS also has a larger diameter of 70mm 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, 81% (373g) lighter than the Panasonic 14-140mm F4-5.8 OIS's weight of 460g.
Filter Threads
The Panasonic 14-140mm F4-5.8 OIS has a filter size of 62mm 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 62mm filters that we recommend you to consider for the Panasonic 14-140mm F4-5.8 OIS:
And these are the 46mm filters that we recommend for the Panasonic 20mm F1.7 II ASPH:
Lens Mounts
Both the Panasonic 14-140mm F4-5.8 OIS 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
Panasonic 14-140mm F4-5.8 OIS has a focal range of 14-140mm and
10.0X zoom ratio which has an effective (full-frame 35mm equivalent) focal range of
28-280mm when used on a FourThirds format camera.
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.
