Hi. I have changed my Linhof focus screen by a Rick Oleson one. Rick has a 4x5 model that could be adapted to my camera. I am very happy because is very bright and the focussing is not affected at all (see the test using a Xenar 210 f4.5@4.5; focus was in HACENDADO word).
Linhof-2021-018w by pedro_fiz, en Flickr
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