Sorry for the crappy iPad pics but....

Can anyone tell what this rare lens is?

Just a beast....in a nice way.
I'm doing up a review for my blog soon at
www.gforcevideo.com (http://www.gforcevideo.com)

Just wondering if anyone else has this lens or can guess what
it is. I had never heard of it before, although I will freely
admit to not being a stills guy or DSLR video shooter so
perhaps that explains my ignorance....

I think is the old Tamron 28-105mm f2.8 lens with the LA-EA1 adapter.

Cheers

Wow first guess....I'm actually using the Metabones adapter, but yeah you got it.
I'd never heard of a 28-105 constant 2.8. I knew about the 17-50, the 24-70, the
70-200, the 50-150, but didn't know there was a 28-105 constant 2.8. Of course,
as I said, I don't know much about still lenses so it may be that everyone except me
already knew about this lens.