[rollei_list] Re: 3.5 Tessar sharpness
- From: Jerry Lehrer <jerryleh@xxxxxxxxxxx>
- To: rollei_list@xxxxxxxxxxxxx
- Date: Fri, 23 Dec 2005 12:53:54 -0800
James,
The usual rule of thumb is two stops down from maximum aperture.
I am sure that Richard will give far more info than that.
Jerry
James Davis wrote:
> What range of apertures produces optimum sharpness on a f/3.5 Tessar as
> found on a 'flex T?
>
> James
>
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