Lately I've been really wanting to experiment with off camera flash with my medium format work. I've been using a Luna Pro sbc for a while now and it works amazingly well for my purposes. However I've found myself needing a flash meter. I know there's a flash attachment for the luna pro and it's reasonably priced. I was wondering if anyone has experience with this attachment and could let me know whether or not it would be decent for off camera flash work. I would be using 2 to 3 flashes. I'd love to have a sekonic L308 or 358 but can't really afford one at the moment. I can however afford the flash attachment for the luna pro, but I'd like to hear from someone who's personally used the attachment. thank you.