Ebay Solar Critical Focusing Chart by Burke & James (ca. 1940s)

syncrasy

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• Nov 6, 2020

• #1

An older item I found in my father's darkroom...

Solar Critical Focusing Chart by Burke & James (ca. 1940s)
https://www.ebay.com/itm/324359701458

 

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syncrasy

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• Nov 10, 2020

• #2

SOLD!

 

AgX

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• Nov 10, 2020

• #3

I have never seen such before.

All resolution test targets I know are reflective. This one though is transmissive!