Originally Posted by
Struan Gray
My 5x7 back came with a factory Fresnel, mounted on the inside of the gg. The space between the plastic Fresnel and the gg was full of dust and some kind of algae/mould that had grown there. Cleaning the gunk off with water and a tissue removed all the silkscreened lines :-(
That said, I don't frame exactly, and I don't do a lot of architecture, so I really only use the lines to provide a reference for focussing my loupe prior to focussing the image.
I did take the chance to centre up the gg in the frame. I don't think it makes any difference unless you are the sort who prints borders *and* fills the frame with important detail right to the edge.
Your bellows sag looks normal to me.
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