The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Panasonic 9mm F1.7 ASPH and the Sigma 16mm F1.4 DC DN MFT for their suitability to various photography scenarios:
Size and Weight Comparison
The size of a lens is an important deciding factor when comparing two lenses. Sigma 16mm F1.4 DC DN MFT is the longer of the two lenses at 92mm. The Panasonic 9mm F1.7 ASPH with a length of 52mm, is 40mm shorter. Besides being longer, the Sigma 16mm F1.4 DC DN MFT also has a larger diameter of 72mm compared to the Panasonic 9mm F1.7 ASPH's 61mm diameter.
Below you can find a scaled side-by-side image of Panasonic 9mm F1.7 ASPH and Sigma 16mm F1.4 DC DN MFT to get a better idea of how their sizes compare in real life.
Comparison image of the Panasonic 9mm F1.7 ASPH and the Sigma 16mm F1.4 DC DN MFT Size and Weight The weight of a lens is as important as its external dimensions, especially if you are planning to hand hold your camera and lens combination for longer periods. Panasonic 9mm F1.7 ASPH weighs 130g, which means it is 275g (67%) lighter than the Sigma 16mm F1.4 DC DN MFT which has a weight of 405g.
Below you can find the dimension and weight table of the Wideangle Prime Lenses in Micro Four Thirds Mount for size comparison purposes.
Wideangle Prime Lenses in Micro Four Thirds Mount for Size Comparison
Lens Mounts
Both the Panasonic 9mm F1.7 ASPH and the Sigma 16mm F1.4 DC DN MFT 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-5, Panasonic GH6 and OM System OM-1.
Focal Range
Panasonic 9mm F1.7 ASPH is a prime lens with fixed focal lenght of 9mm which has an effective (full-frame 35mm equivalent) focal range of 18mm when used on a FourThirds format camera. Sigma 16mm F1.4 DC DN MFT is a prime lens with fixed focal lenght of 16mm which has an effective (full-frame 35mm equivalent) focal range of 32mm when used on a FourThirds format camera.