The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Kamlan 28mm F1.4 and the Olympus 25mm F1.2 Pro for their suitability to various photography scenarios:
Size and Weight Comparison
Size of a lens is an important deciding factor when comparing two lenses.Olympus 25mm F1.2 Pro is the longer of the two lenses at 87mm. The Kamlan 28mm F1.4 with a length of 65mm is 22mm shorter. Besides being longer, the Olympus 25mm F1.2 Pro also has a larger diameter of 70mm compared to Kamlan 28mm F1.4's 55mm diameter.
Weight of a lens is as important as its external dimensions, especially if you are planning to hand hold your camera and lens combination for longer periods. Kamlan 28mm F1.4 weighs 384g, which means it is 26g (6%) lighter than the Olympus 25mm F1.2 Pro which has a weight of 410g.
Both Kamlan 28mm F1.4 and Olympus 25mm F1.2 Pro 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-5, Panasonic GH6 and OM System OM-1.
Kamlan 28mm F1.4 is also available in Canon EF-M , Fujifilm X and Sony E mounts.
Kamlan 28mm F1.4 is a prime lens with fixed focal lenght of 28mm which has an effective (full-frame 35mm equivalent) focal range of 56mm when used on a APS-C / DX format camera. 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.