Re: you want coverage? ;-) Re: Nikkor coverage

[Joe McCary - <mccary@xxxxxxxxx>]

Actually you should consider the circle if the lens were shifted 10mm in
BOTH directions! So your lens would have to cover about 24x54 (the Nikkors
both have fall off when shifted in the length of the film and Nikon
recommends only shifting it 8mm). So doing the math says that the Nikon 28mm
PC lens has about a 59mm circle.  not too bad for a 35mm lens.  but still
not enough to cover more than a slit on a 120 panning camera.  So please
explain how the 24mm Nikkor cover 120?
Joe McCary
-----Original Message-----
From: zxiong@xxxxxxxxxxxxxxxxxxxxxx <zxiong@xxxxxxxxxxxxxxxxxxxxxx>
To: panorama-l@xxxxxxxxxxxxxxxxx <panorama-l@xxxxxxxxxxxxxxxxx>
Date: Sunday, January 16, 2000 5:47 PM
Subject: Re: you want coverage? ;-) Re: Nikkor coverage


>not quite so simple ;-) the diagonal of 24x36 rectangle is circa 43mm, so
>most 35mm lenses with full frame coverage must have an image circle of at
>least 43mm. Stopping the lens down usually provides more coverage (not

What would the image circle be if the lens is shifted 10 mm?

Zonghou Xiong