Re: rotational point and focal length

> I'm sure this has been discussed ad nauseum, but being
> an on again off again subscriber, I'll ask anyway. If
> the answer is in the archives, please point me to it.
>
> If rotation on the rear (or some) nodal point is so
> important, why is it that cameras such as the Hulcher
> (which I've used with very good results), the PanTech,
> and others that use 35mm and medium format lenses in
> focusing mounts, can get such sharp results merely by
> changing the rate of film pull through the camera,
> i.e. the rotational point, with relation to the film,
> is unchanged?

Rotation around nodal point of the lens is important only for close up wievs but not for infinity views : from infinity to 5 meters , there is usualy no problems with a focal length between 50mm and 24mm.