Good lab prints from 120 film, using 6x6 format film will be square, yes. A local lab just printed 6x4 prints from my holga shots (doh). But I send it off to a good lab now (RGB Lab somewhere up north here in the UK, I forget where, Doesn't matter much does it?) and get nice colour prints back. Never had a huge problem with holgas and exposure but I do have a hand meter and estimate the holga to be f-8 and around 1/100sec shutterspeed. I meter for whatever the box speed is of the film, even if it's B&W film and I'm using diafine. Never seemed to matter much but I guess I'm not picky enough :P I get images; that makes me happy.