I want to use a composing card with 4x5 format, so I would need to make the card with a 4x5 in. opening right? I saw on Q's site that the opening should be no smaller than 3x3 3/4 in., but as regards to different formats the porportions wi ll vary. Anyway I took that to mean that for a composing card to be used with a 4x5 neg the opening should be no smaller than that mentioned. But would'nt you want it to be the same dimensions as the format you are using?
Thank you very much for the input, all is appreciated!
Clark King
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