The type of photography that you are planning to use is an important decision factor. Here we have evaluated the OM System 25mm F1.8 II and the Panasonic 14-42mm F3.5-5.6 II OIS 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 14-42mm F3.5-5.6 II OIS is the longer of the two lenses at 49mm. The OM System 25mm F1.8 II with a length of 41mm, is 8mm shorter. On the other hand, there is no difference between the max diameters of these lenses, both coming at 56mm.
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 14-42mm F3.5-5.6 II OIS weighs 110g, 29% (46g) lighter than the OM System 25mm F1.8 II's weight of 156g.
Filter Threads
Both the OM System 25mm F1.8 II and the Panasonic 14-42mm F3.5-5.6 II OIS 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 25mm F1.8 II and the Panasonic 14-42mm F3.5-5.6 II OIS 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 25mm F1.8 II 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.
On the other hand, the Panasonic 14-42mm F3.5-5.6 II OIS has a focal range of 14-42mm and 3.0X zoom ratio which has an effective (full-frame 35mm equivalent) focal range of 28-84mm when used on a FourThirds format camera.
