In reply to Jim Lancs:
> Only with Olympus body I’m afraid.
I chickened out, and played it safe with a second-hand Panasonic 42.5mm. I also went cheap-ish compared the the Nocticron version. I did not think it was worth the extra £400 just for one stop more of light gathering and a fraction more possible sharpness.
I'm guessing that it would be like splitting hairs on image quality with Panasonic and Olympus so I went like for like.
Thank you chaps your comments were really useful about image quality especially as this lens will be used for wedding portraits.