----- Original Message -----
From: "Ron Baker" <[EMAIL PROTECTED]>
To: <[EMAIL PROTECTED]>
Sent: Thursday, January 25, 2001 9:28 PM
Subject: Re: [Cameramakers] Bellows and movements
> Hi
> I've had the use of a Zone VI 4x5 and also a Canham DLC. The Zone VI
> required a bag bellows for a 90mm lens if there was to be any shifting of
> the lens up, down side to side. The Canham has a special bellows, that I
> believe is made in England, that will allow full movement, within the
image
> circle, any lens from 58mm up with out the need of a bag bellows. As the
> focal length of a lens decreases so does the image circle. A 58mm lens
will
> not allow very much movement due to the size of the image circle therefore
> the amount the bellows has to move is very small as compared to a 120mm
SW.
> Ron
-------------------------------------
Hi Ron,
sorry to correct you. The focal length of lens has NOTHING to do with its
image circle!! The image circle is given by the design of the lens! You can
have a short focal length lens with a huge or a small image circle,
depanding on designer's intention. Check on Shneider lens or any other brand
to see.... George
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