The type of photography that you are planning to use is an important decision factor. Here we have evaluated the LAOWA 180mm f4.5 Macro and the OM System 90mm F3.5 Macro 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. OM System 90mm F3.5 Macro is the longer of the two lenses at 136mm. The LAOWA 180mm f4.5 Macro with a length of 134mm, is 2mm shorter. Besides being longer, the OM System 90mm F3.5 Macro also has a larger diameter of 70mm compared to the LAOWA 180mm f4.5 Macro's 68mm 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. OM System 90mm F3.5 Macro weighs 453g, 13% (68g) lighter than the LAOWA 180mm f4.5 Macro's weight of 521g.
Filter Threads
Both the LAOWA 180mm f4.5 Macro and the OM System 90mm F3.5 Macro have the same Filter thread size of 62mm.
Below are links to the 62mm filters that we recommend you to consider for these lenses:
Lens Mounts
The LAOWA 180mm f4.5 Macro has the Leica L lens mount whereas the OM System 90mm F3.5 Macro has the Micro Four Thirds lens mount. Some of the latest released cameras that are compatible with these mounts are Leica SL3-P, Panasonic S1 II and Panasonic S1 IIE for the Leica L Mount and OM System OM-3 Astro, OM System OM-5 II and OM System OM-3 for the Micro Four Thirds Mount.
LAOWA 180mm f4.5 Macro is also available in the Sony E , Nikon Z and Canon RF mounts.
Focal Range
LAOWA 180mm f4.5 Macro is a prime lens with fixed focal lenght of 180mm. When it is mounted on an APS-C sensor camera with 1.5x crop, it provides a 35mm (FF) equivalent of
270mm.
On the other hand, the OM System 90mm F3.5 Macro is a prime lens with fixed focal lenght of 90mm which has an effective (full-frame 35mm equivalent) focal range of 180mm when used on a FourThirds format camera.
