I have some fairly early (1860s) lenses which I am trying out. I have been surprised to find that whilst their infinity (landscape) performance can be mediocre, as anticipated, they seem to perform much better close up. One (see attached at 1/3 life-size from it) from 1865, has a obviously later made conical mount and I have a suspicion that once its original role as a stereo lens was over, it may just have been given a new lease of life as an enlarger lens. Does anyone have any observations of similar performance behaviour?
https://www.largeformatphotography.i...1&d=1624791522
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