Tamron 90mm 2.5 52b or 52bb

[duncan_trebilcock]

I am about to purchase either a Tamron 90mm 2.5 52b, (the old one -

49mm thread), or a 52bb MF, the newer version, with a 55mm thread (not

to be confused with the latest 90mm 2.8). cost and condition are the

same, the optical design is the same.

 

I am interested in any views from people who have used BOTH these

lenses in earnest, from the point of view of durability and build. I

am fairly familiar with the older model, but am not so sure about the

newer one. I have handled it, but I would value a more seasoned

opinion.

 

Thanks for reading my question

[douglas_green1]

IMHO, the older one is slightly more robust in costruction.