natasha___

How does on work out the minimum focusing distance given the maximum extenstion of the camera, the focal lenght of the lens and the flange distance?

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As an example for a 450mm lens with flange distance of 428.4mm and a 8x10 camera with a maximum extension of 570mm, what would be the minimum focusing distance and magnification?

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Thank you.

There is a new lens for the Minolta APS SLR Cameras, the S-1 and S-100. It is the 400mm 8.0 reflex lens.

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There are two great advantages with this lens. It is very compact - barely larger than a normal lens. And it is autofocus.

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It is also inexpensive at $500 or so.

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I was wondering if this would be a good setup for shooting wildlife/birds?

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Any comments?