07-25-2016, 09:10 AM
Using FF wide-angles on a MFT or APS-C mirrorless camera is in my experience the worst thing to do:
- You lose the weight and size advantage immediately.
- You have to deal with an adapter. Except of metabones speedbooster, none will improve IQ. The speedbooster is pricey and sometimes close to the cost of as dedicated WW-mirrorless lens
- IQ is worse than with dedicated mirrorless lenses because FF wide-angles need to be retrofocus types because of the mirrorbox.