The type of photography that you are planning to use is an important decision factor. Here we have evaluated the OM System 12-40mm F2.8 PRO II and the OM System 40-150mm F4.0 PRO 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 40-150mm F4.0 PRO is the longer of the two lenses at 99mm. The OM System 12-40mm F2.8 PRO II with a length of 84mm, is 15mm shorter. On the other hand, the OM System 12-40mm F2.8 PRO II has a larger diameter of 70mm compared to the OM System 40-150mm F4.0 PRO's 69mm diameter.
Below you can find a scaled side-by-side image of OM System 12-40mm F2.8 PRO II and OM System 40-150mm F4.0 PRO to get a better idea of how their sizes compare in real life.
Comparison image of the OM System 12-40mm F2.8 PRO II and the OM System 40-150mm F4.0 PRO Size and Weight 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.
Filter Threads
Both the OM System 12-40mm F2.8 PRO II and the OM System 40-150mm F4.0 PRO 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
Both the OM System 12-40mm F2.8 PRO II and the OM System 40-150mm F4.0 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-3 Astro , OM System OM-5 II and OM System OM-3 .
Focal Range
OM System 12-40mm F2.8 PRO II has a focal range of 12-40mm and
3.3X zoom ratio which has an effective (full-frame 35mm equivalent) focal range of
24-80mm when used on a FourThirds format camera.
On the other hand, the OM System 40-150mm F4.0 PRO has a focal range of 40-150mm and 3.8X zoom ratio which has an effective (full-frame 35mm equivalent) focal range of 80-300mm when used on a FourThirds format camera.
