The type of photography that you are planning to use is an important decision factor. Here we have evaluated the OM System 90mm F3.5 Macro and the Tamron 90mm F2.8 VC 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 Tamron 90mm F2.8 VC Macro with a length of 117mm, is 19mm shorter. On the other hand, the Tamron 90mm F2.8 VC Macro has a larger diameter of 79mm compared to the OM System 90mm F3.5 Macro's 70mm 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, which means it is 156g (25%) lighter than the Tamron 90mm F2.8 VC Macro which has a weight of 609g.
Filter Threads
Both the OM System 90mm F3.5 Macro and the Tamron 90mm F2.8 VC 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 OM System 90mm F3.5 Macro has the Micro Four Thirds lens mount whereas the Tamron 90mm F2.8 VC Macro has the Sony Alpha lens mount. Some of the latest released cameras that are compatible with these mounts are OM System OM-3 Astro, OM System OM-5 II and OM System OM-3 for the Micro Four Thirds Mount and Sony A99 II, Sony A68 and Sony A77 II for the Sony Alpha Mount.
Tamron 90mm F2.8 VC Macro is also available in Nikon F (FX) and Canon EF mounts.
Focal Range
Both lenses have the same focal range of
90mm but while OM System 90mm F3.5 Macro has the fastest aperture of
F3.5, the Tamron 90mm F2.8 VC Macro's widest aperture value is
F2.8.
