Quote Originally Posted by agphotography View Post
That doesn't sound too bad. With the MB-20 it'll be practically the same size as my 5DmkIIs.
From Wikipedia:
F4 MB-20 1988 4.0 frame/s 4 AA most compact
F4S MB-21 1988 5.7 frame/s 6 AA vertical shutter release
F4E MB-23 1991 5.7 frame/s 6 AA or Ni-Cd (MN-20) largest pack, vertical shutter release, 250 exposure Bulk Film Multi-Control Back MF-24 terminal

So with the MB-20, it would actually be a bit smaller than the measurements I quoted from my F4S (with MB-21).