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 Panasonic 7-14mm F4 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 7-14mm F4 ASPH is the longer of the two lenses at 83mm. The Panasonic 9mm F1.7 ASPH with a length of 52mm, is 31mm shorter. Besides being longer, the Panasonic 7-14mm F4 ASPH also has a larger diameter of 70mm compared to the Panasonic 9mm F1.7 ASPH's 61mm 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 9mm F1.7 ASPH weighs 130g, which means it is 170g (56%) lighter than the Panasonic 7-14mm F4 ASPH which has a weight of 300g.
Lens Mounts
Both the Panasonic 9mm F1.7 ASPH and the Panasonic 7-14mm F4 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 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.
On the other hand, the Panasonic 7-14mm F4 ASPH has a focal range of 7-14mm and 2.0X zoom ratio which has an effective (full-frame 35mm equivalent) focal range of 14-28mm when used on a FourThirds format camera.
