I received my copy of this lens today, primarily for use with my 7Dmk2 but also for use with the EM-1 + metabones (if it happened to work)
It looks ridiculous on the EM-1 and even with the battery grip is very front heavy (no surprise there
) and is definitely not a lens to let dangle unsupported for fear of damaging the lens mount
But - first brief tests indicate that not only does is seem to focus very quickly in SAF mode but its also appears pretty accurate and, to my surprise, first indications are that it is sharper at 600mm wide open on the EM-1 than it is a 600mm f8 on the 7Dmk2
As this lens is intended for "terrestrial" subjects not BIF work this is, if confirmed by more testing, a real bonus
Its a blooming great lump of a thing though, just about hand-holdable but I suspect its going to spend most of its time on a tripod or monopod
It looks ridiculous on the EM-1 and even with the battery grip is very front heavy (no surprise there

But - first brief tests indicate that not only does is seem to focus very quickly in SAF mode but its also appears pretty accurate and, to my surprise, first indications are that it is sharper at 600mm wide open on the EM-1 than it is a 600mm f8 on the 7Dmk2
As this lens is intended for "terrestrial" subjects not BIF work this is, if confirmed by more testing, a real bonus

Its a blooming great lump of a thing though, just about hand-holdable but I suspect its going to spend most of its time on a tripod or monopod
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