Re: fixed focus panoramic

[simon nathan <simonwide@xxxxxxxxxxxxx>]

david: as hazy as your name is, your explanation is not.
i want to qualify your correction of my statement to include "on film"
because i am not comprehending digital this or that. did you catch my months
ago description of first globus bros. camera built by hulcher and his team
of elves, richard hill, director? it used  50-250mm nikkor zoom and
synchronized film speed (not asa)- advance with zooming during run. it
came in a small steamer trunk with industrial strength netstrap. simonnathan.,

ADavidhazy wrote:

Subject:

> it will be a cold day in hell when you can overcome image smear with
> depth of field!

This is at the very core of image sharpness when it comes to panoramic cameras.
DOF will continue to work in a direction parallel to the slit but
perpendicular to the slit it will be image/film slippage that will largely
determine how sharp the image is. Basically the worse the slippage the less
apparent dof given a particular dof associated with perfect sync.

Further, motion of film and image must be the same otherwise significant
blurring is the result even thought subject proportions may be maintained.

The situation is a bit more complex or simple when a digital panoramic camera
equipped with a linear array is used. In this case there is no moving film and
rotation can take place in either direction with the result only being a
reversal of subject features (easily solved with software!). Futher, since
"pixels" are much smaller than any physical slit in a film camera can probably
be, sharpness along the slit is maintained over a wider angle than when slits
are used.

More or less ...

adios, andy davidhazy - andpph@xxxxxxx