The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Sigma 30mm F2.8 EX DN and the Panasonic Lumix G 25mm F1.7 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 Lumix G 25mm F1.7 ASPH is the longer of the two lenses at 52mm. The Sigma 30mm F2.8 EX DN with a length of 39mm, is 13mm shorter. On the other hand, there is no difference between the max diameters of these lenses, both coming at 61mm.
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 Lumix G 25mm F1.7 ASPH weighs 125g, 7% (10g) lighter than the Sigma 30mm F2.8 EX DN's weight of 135g.
Below you can find the dimension and weight table of the Standard Prime Lenses in Micro Four Thirds Mount for size comparison purposes.
Standard Lenses in Micro Four Thirds Mount for Size Comparison
Filter Threads
Both the Sigma 30mm F2.8 EX DN and the Panasonic Lumix G 25mm F1.7 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 Sigma 30mm F2.8 EX DN and the Panasonic Lumix G 25mm F1.7 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 , and .
Sigma 30mm F2.8 EX DN is also available in Sony E mount.
Focal Range
Sigma 30mm F2.8 EX DN is a prime lens with fixed focal lenght of 30mm which has an effective (full-frame 35mm equivalent) focal range of
45mm when used on a APS-C / DX format camera.
On the other hand, the Panasonic Lumix G 25mm F1.7 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.