this thread has some info:
http://www.photoclubalpha.com/forum/vie ... =49&t=4615
e.g.
David Kilpatrick wrote:I do not have the Tamron here but can confirm:
30mm f/2.8 SAM macro - scary slow and noisy, works
70-300mm f/4.5-5.6 SSM G - perfectly fast and silent, within parameters of focus method
70-200mm f/2.8 Sigma HSM II - ditto, works well
70-300mm f/4-5.6 Sigma OS - OS works, focus works, similar to SAM 30mm it's noisy and slow
18-55mm SAM - similar to 30mm
In-lens motors like SAM work, but they are clunky. SSM works surprisingly smoothly. All take some time to settle into focus; slower than the Pentax K-5, but a similar search and refine focus cycle.
David
The legacy lens binge on nex is OOC worldwide, but most are using MF and fewer have LAEA1 which is nearly 10x cost of, say, an FD or M to nex adapter--these are going for 25USD and work fine--but no wires of course.
I am surprised we don't have a good list of third-party AF lens compatablity by this point. The sigma HSM II 70-200 proves some will work pretty well--but which others?
The list of lenses which allow aperture control but won't AF must be quite large--and many of these would be attractive to some.
I have ordered both LAEA1 and sigma 8-16mm after David was kind enough to verify aperture control.
I have all the emounts, including 18200, and probably the only other modern lens i will buy at some point is the 70400 for wildlife/nature.
Leagcy primes I use are FD 20, 24 f/2, 35 f/2, Kiron 28 f/2, konica 40 f/1.8, pentax-m f/1.4, FL 55 1.2, tokina 90 atx, kiron 105, and soligar 135 f/2, all specially selected for the nex-5 and vg10. All work outstanding.
I travel alot in the backcountry and normal DSLRs are just too big. I can take the nex and one or two lenses and day gear in a small pack. It's a revolution for me.