The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Olympus 25mm F1.2 Pro and the Panasonic Macro 30mm F2.8 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. Olympus 25mm F1.2 Pro is the longer of the two lenses at 87mm. The Panasonic Macro 30mm F2.8 OIS with a length of 64mm, is 23mm shorter. Besides being longer, the Olympus 25mm F1.2 Pro also has a larger diameter of 70mm compared to the Panasonic Macro 30mm F2.8 OIS's 59mm 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 Macro 30mm F2.8 OIS weighs 180g, 56% (230g) lighter than the Olympus 25mm F1.2 Pro's weight of 410g.
Filter Threads
The Olympus 25mm F1.2 Pro has a filter size of 62mm whereas the Panasonic Macro 30mm F2.8 OIS has a 46mm diameter. Larger filters are generally more expensive than the smaller ones given all the other features are equal.
Below are links to the 62mm filters that we recommend you to consider for the Olympus 25mm F1.2 Pro:
And these are the 46mm filters that we recommend for the Panasonic Macro 30mm F2.8 OIS:
Lens Mounts
Both the Olympus 25mm F1.2 Pro and the Panasonic Macro 30mm F2.8 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-1 II, Panasonic G9 II and OM System OM-5.
Focal Range
Olympus 25mm F1.2 Pro 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 Macro 30mm F2.8 OIS is a prime lens with fixed focal lenght of 30mm which has an effective (full-frame 35mm equivalent) focal range of 60mm when used on a FourThirds format camera.