[pure-silver] Re: 90mm lens for 4x5 recommendations
- From: "Rob Champagne" <psps@xxxxxxxxxxxxxxxxxxxxxx>
- To: pure-silver@xxxxxxxxxxxxx
- Date: Mon, 13 Sep 2004 20:46:29 +0100
Ah but as the focal length gets shorter and the "depth of field" gets longer
the "depth of focus" at the film plane gets shorter so what you gain in one
hand you lose in the other making film plane and focus accuracy critical.
rob
At 13/09/2004 13:29 -0500, you wrote:
>Michael Healy wrote:
>>
>> (snipped)...Speaking of FWIW, you should see what the 6-1/2x8-1/2
>> Bausch+Lomb 158mm Zeiss
>> Protar Series V does on an 8x10...
>>
>
>Drool, drool. 210 is my short 8x10 lens, and I love
>what 90 does to the world on 4x5, so I salivate at the
>thought of something this short. And as the lens gets
>shorter we fortunately find the depth of sharp focus
>improving, so it's maybe not so necessary to part with
>massive cash for a larger image circle for corrections.
>
>John - I should have mentioned, re our older slower
>lenses. Close the dark cloth below the camera too,
>shut out all extraneous light so your eyes will open up
>more. Poor man's fast lens.
>
>Regards... Dick Gifford
>
>
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