legsgh4 reacted to
andy lee in BMCC variant Metabones Speed Booster works on GH3 and GH4 to give 1.28x crop, almost full frame look!
An Olympus OM 2 is a full frame 35mm stills camera
your gh4 is a mirrorless digital camera with a x2 crop factor on your lenses
so your 50mm OM lens is longer on your gh4 by a factor of x2 (100mm FF equivilant)
You do need to read up on this as crop factors and full frame, they have different looks.
Im sure your speedbooster is working fine - if it has a lump of glass in it it will be making your 50mm OM lens x0.7 wider
just remember you have a x2 crop to factor into it all