03-06-2014, 08:51 AM
Of course it is long, it is a 300mm prime.... Why would it have to be shorter than an FF design? The Pentax DA* 300mm f4 is an APS-C design (DA), and is shorter only if one does not count the mirror box size. The Nikkor 300mm f4 is very big, count in the mirror box size and the lens is more than 6cm longer.
Where the Oly may have an advantage is weight, but with tele primes the smaller image circle needed for the smaller sensor only really counts for back elements, not so much for front elements.
Where the Oly may have an advantage is weight, but with tele primes the smaller image circle needed for the smaller sensor only really counts for back elements, not so much for front elements.