The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Olympus 30mm F3.5 Macro and the Kamlan 28mm F1.4 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. Kamlan 28mm F1.4 is the longer of the two lenses at 65mm. The Olympus 30mm F3.5 Macro with a length of 60mm, is 5mm shorter. On the other hand, the Olympus 30mm F3.5 Macro has a larger diameter of 57mm compared to the Kamlan 28mm F1.4's 55mm 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. Olympus 30mm F3.5 Macro weighs 128g, which means it is 256g (66%) lighter than the Kamlan 28mm F1.4 which has a weight of 384g.
Filter Threads
The Olympus 30mm F3.5 Macro has a filter size of 46mm whereas the Kamlan 28mm F1.4 has a 52mm diameter. Larger filters are generally more expensive than the smaller ones given all the other features are equal.
Below are links to the 46mm filters that we recommend you to consider for the Olympus 30mm F3.5 Macro:
And these are the 52mm filters that we recommend for the Kamlan 28mm F1.4:
Lens Mounts
Both the Olympus 30mm F3.5 Macro and the Kamlan 28mm F1.4 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.
Kamlan 28mm F1.4 is also available in Canon EF-M , Fujifilm X and Sony E mounts.
Focal Range
Olympus 30mm F3.5 Macro 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.
On the other hand, the 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.