Archived posting to the Leica Users Group, 2003/12/11
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At 9:10 AM +0100 12/11/03, Daniel Ridings wrote:
>I'm not familiar with the hood, Bill. Film doesn't cost that much. Run a
>roll through it and check out the negatives/slides.
>
>If you can find a large surface of one tone (the sky or something like
>that) fire a frame or two off on it at various aperatures. When you get
>the film back and don't see any darkened corners or edges, then you're ok.
>
>Daniel Ridings
>Lindome Sweden, Oslo Norway
>
>On Wed, 10 Dec 2003, Bill Stanke wrote:
>
>> Hi:
>>
>> Can I use the B&W Hood #900 with a 35 mm Summaron f/3.5 RF?
>>
>> Thanks!
>>
> > Bill Stanke
Don't do that.
Put the hood on the lens and open it up, put the shutter on B, open
it and flip open the back. Look through the lens from the front, and
hold it up to the light. Does the hood block the lens opening before
you can see the corners of the frame? If so, it vignettes. If you can
see the corners through all parts of the lens with the hood in place,
it doesn't vignette.
Much more conclusive than with film as it doesn't confuse light
falloff due to the lenses' optical or physical design, and it doesn't
cost anything other than a couple of minutes.
- --
* Henning J. Wulff
/|\ Wulff Photography & Design
/###\ mailto:henningw@archiphoto.com
|[ ]| http://www.archiphoto.com
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