The type of photography that you are planning to use is an important decision factor. Here we have evaluated the OM System 17mm F1.8 II and the Panasonic 25mm F1.4 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 25mm F1.4 II ASPH is the longer of the two lenses at 55mm. The OM System 17mm F1.8 II with a length of 36mm, is 19mm shorter. Besides being longer, the Panasonic 25mm F1.4 II ASPH also has a larger diameter of 63mm compared to the OM System 17mm F1.8 II's 58mm diameter.
Below you can find a scaled side-by-side image of OM System 17mm F1.8 II and Panasonic 25mm F1.4 II ASPH to get a better idea of how their sizes compare in real life.
Comparison image of the OM System 17mm F1.8 II and the Panasonic 25mm F1.4 II ASPH Size and Weight 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. OM System 17mm F1.8 II weighs 112g, which means it is 93g (45%) lighter than the Panasonic 25mm F1.4 II ASPH which has a weight of 205g.
Below you can find the dimension and weight table of the Wideangle Prime Lenses in Micro Four Thirds Mount for size comparison purposes.
Wideangle Micro Four Thirds Mount
Filter Threads
Both the OM System 17mm F1.8 II and the Panasonic 25mm F1.4 II ASPH have the same Filter thread size of 46mm .
Below are links to the 46mm filters that we recommend you to consider for these lenses:
Lens Mounts
Both the OM System 17mm F1.8 II and the Panasonic 25mm F1.4 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
OM System 17mm F1.8 II is a prime lens with fixed focal lenght of 17mm which has an effective (full-frame 35mm equivalent) focal range of
34mm when used on a FourThirds format camera.
On the other hand, the Panasonic 25mm F1.4 II ASPH is a prime lens with fixed focal lenght of 25mm which has an effective (full-frame 35mm equivalent) focal range of 50mm when used on a FourThirds format camera.
