[Peter Zack]

Leadbelly, The Bellows is 150mm on mine. I never measured the 50mm attached for focus distance but it's only about 2 inches or so at 150mm extension. 100mm is more than enough most of the time.

Tom Fleabay (we should start an Ebay anacronym thread) is the best source I find. There are usually 10+ any given week and rarely go for more than $40 or so. There's no real need to spend a fortune on the bellows as long as it's light tight and sturdy the rest is extra. K mount is nice since you can use a macro lens like Kim's 100mm f3.5 or Dave's Sigma 105 f2.8. Or an FA35mm, 43mm Ltd right up to a 135mm or even a 200mm. Using a dedicated macro lens with a bellows is a real plus as you can use the lens to get closer, get the shot framed better and much easier focus.

I'm at work but in a day or so I'll add a few more equipment pictures such as the focus rails and adapters I have in my kit.