ON TRIAL OM SYSTEM M.ZUIKO DIGITAL ED 90mm f/3.5 MACRO IS PRO
The focal length magnification factor of a cropped sensor - relative to the 35mm format, which is the defacto reference image size delivers a 'virtual' telephoto effect because of a narrower effective field of view. The increased 'magnification' - actually the enlargement of the smaller image size - is promoted as advantageous for various areas of photography including sports, action, adventure and wildlife, but build a good close-focusing lens and it has plenty of pluses for macro work too.
The Micro Four Thirds format - with its 1.97× focal length multiplier factor - delivers the most telephoto bang for buck in the mirrorless camera world, something that OM Digital Solutions has been exploiting with lenses such as the OM System M.Zuiko Digital ED 40-150mm f/4.0 PRO, which is significantly smaller and lighter than a comparable full-frame lens with a focal range of 80-300mm. Likewise with earlier Olympus models such as the M.Zuiko Digital ED 100-400mm f/5.0-6.3 IS which is equivalent to 200-800mm, but still compact enough to be comfortably used handheld.
