It should be a minimum barrel of 500mm/2.8 (proportional), so still very big

BTW, '58s came in yesterday, but I wasn't home (came in usps express which did deliver on Columbus, but wans't there to sign for it). Got it this morning (after they turned the post office upside down looking for it.... took than 25 minutes, sheesh ). Took like 3 pictures this morning, it's such a cool flash! I've never used such a flash before, but I love it! It's so fast, flexible, and just provides so many creative uses with that clever pivoting head AND wireless is sweet!

Will make a thread tonight or tomorrow.