Ross Wide Angle XPres coverage?

What is the coverage of an old (brass barrel mounted) 12"/4 Ross Wide Angle Xpres? Does anyone have a list of coverages for other Ross wide angle lenses?

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Thanks in advance for your replies...

Wooden's Large Format Optical Reference Manual lists a 12" f4.5 Ross

Xpress and indicates that it covers 8x10 with an angle of view of 58

degrees. There is no listing for a 12" f4 Wide Angle Express, but I

would guess that it also covers 8x10.

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Regarding the second part of your question, Wooden lists five Ross

wide angle Express lenses:

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(1) 4" f4. covers 4x5 with an angle of view of 70 degrees;

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(2) 4 3/4" f4. covers 5x7 with an angle of view of 70 degrees;

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(3) 5" f4. covers 5x7 with an angle of view of 70 degrees;

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(4) 5 1/2". covers 5x7 with an angle of view of 70 degrees;

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(5) 20" f4. covers 16x20 with an angle of view of 70 degrees.

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You may also want to look at the Bostick-Sullivan web page which lists

coverages for a variety of older lenses including Ross. See:

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http://www.bostick-sullivan.com/Alt_cameras/large%20format%20lenses.ht

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I hope this helps.

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