Doug Franklin wrote:
> David Savage wrote:
>
>   
>> It's called trap focus & you can already do it.
>>     
>
> But it only works with MF lenses or AF lenses that turn off all their 
> (digital?) electronics when in MF mode.  For example, my SMCP-FA* 
> 200/2.8 won't do it in any (lens) mode.  My Sigma APO 400/5.6 Macro, 
> though, will do trap focus when it's set to MF mode.
>
>   

It would be cool to be able to use AF lenses and select a different 
focus zone instead of dead centre.


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