Originally Posted by polyglot
Specifically, the depth of focus at the paper is far far deeper than the paper at typical print sizes. It might matter if you were doing reductions but I haven't checked the maths.
You don't want to leave the easel out though
According to the tests Barry Thornton did with 1/2" thick boards making prints from 1/2" above and below the focus point, I think you could leave the easel out!
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