I don't think you need to switch SR of in those situations.
TC makes SR less effective, but it still does a rather good job.
I haven't tested it out really, but this is what my instincts tells me.

MaritimTim

2008/5/10 John Whittingham <[EMAIL PROTECTED]>:
> Hi Patrick
>
> Yes it's a great lens by all accounts, I was considering A Sigma 400/5.6 APO
> Tele Macro (s/h) and 1.4x 2x EX converters but I'm back to my SR problems
> with converters. I'm thinking of forgetting the SR problem and getting myself
> a lighter tripod to carry, then whenever I need to use a TC for extra reach
> I'll tripod mount and switch SR off
>
> Regards,
>
> John
>

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