I've seen a few posts on this, but frankly, I'm still not sure what I'm looking at. I'm new to MF photography and I am currently using only an 80mm C type lens with my 'new' 501C Hassy. I was a little surprised at the minimum focus distance of nearly a meter on this lens and, wanting to get the most out of the lens, I'm looking into what's available for close focusing gear. I don't care so much about reproduction ratio and stuff like that; I'm not doing high precision macro work. Can anyone illuminate me on the best and most cost effective (read: cheapest)way of decreasing minimum focus distance, such as, what? extension tubes?, some kind of adapter rings? 16mm? 30mm? What does mm refer to on this type thing? How are these devices used, or what do they do? Are bellows used with this lens? I'm feeling a little ignorant on the whole subject of closeup methods for this lens and format. Are there some pros and cons to these methods? All I know is, with 35mm it was easy - go spend a few hundred on a macro lens and you're done. I don't have 2 grand to drop on a long focal length Zeiss macro lens and looking for a workaround. Thanks in advance for your responses.