"Although I shoot only B&W in LF, I still want the red correction of an Apo lens since the film is panchromatic. I'm striving for the absolute highest quality images I can make on 4x5 "
That is not why the apo is better with black and white. The difference would be lack of color fringing. In B&W this means that fine details in a high contrast field, like the twigs on a tree against the sky, will be reproduced with finer lines then with a non-apo lens.
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