On Thu, 20 Nov 2003, Kostas Kavoussanakis wrote: > I got a used Tamron 90/2.5 (49mm thread) but it has the wrong Adaptall > mount. I don't know much about these mounts, any references? What I am > looking for is info on whether Adaptall and Adaptall 2 adaptors are > usable with this or only one type. Is it still the consensus that KA > Adaptalls are problematic? Are suitable Adaptall mounts available new > and is it recommended against buying used?
I'm pretty sure that Adaptall 1 is a thread based lens mount. Adaptall 2 is bayonet based. I have that lens in an Adaptall 2 mount. I have both the PKA and PK adapters and have no functional problems with the PKA. I'm pretty much leaving it in A though as I use this lens on my *ist D. I used the PK adapter before getting the *ist D because it gave me an f/32 f-stop that the PKA adapter doesn't. The lenses and adapters are still available new. alex
