Originally posted by stevebrot I don't think so. I own the Bellows K and purchased it in preference to the Bellows II.
Steve
The whole Pentax Bellows lineup is a bit confusing. Here is what I found:
Bellows I (M42) The first Pentax bellows with one rail
Bellows II Early Model (M42) Has a double rail, this is the one “titrisol” has.
Bellows II Late Model (M42) Has a single X-shaped rail and was introduced in 1974.
Bellows II/Bellows K (K-Mount) Has a single X-shaped rail and was introduced in 1975. (See photo)
Bellows III (K-Mount) This has a slightly longer extension (33mm – 140mm) and a “Front Plate Clamp Knob” instead of a “Lever”. Introduced in the late 1970’s or early 1980’s.
So the late model M42 Bellows II and the Bellows K are the same except for the mount. The Bellows K was also called the Bellows II as per my box.
Phil