From: "William Robb"
From: "Adam Maas"
>
> In fact the Tamron 90 is somewhat legendary as a portrait lens. But
> the AF on the AF version is so slow as to be useless for anything that
> you can't reliably track in manual focus. Long focus throws are the
> bane of AF performance and a requirement in macros.
I expect that this is where a focus limiter would be useful.
I just had a look at my A100/2.8 Macro (which is a lens I would not
reccomend to anyone with a DSLR).
Is there any reason for that other than the long focus throw?
I'm currently using one for macro work with my DSLRs & have found it
satisfactory for the purpose.
And it does work adequately at the other end for portrait work. DoF is
kind of shallow wide open, but it's still good glass IMO stopped down.
The long throw doesn't seem to get in the way since I'm not switching
rapidly from macro to portrait.
If I didn't already have the A100/2.8 Macro, I'd look into acquiring the
FA100/2.8 Macro. But since I DO already have the A100/2.8, the lack of
auto focus is not a lack sufficient to prompt me to replace a perfectly
good lens.
--
PDML Pentax-Discuss Mail List
[email protected]
http://pdml.net/mailman/listinfo/pdml_pdml.net
to UNSUBSCRIBE from the PDML, please visit the link directly above and follow
the directions.
