Amateur Photographer Magazine

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Which O.K probably weren't, the technical piece of gear that ultimately decided the final print resolution was the enlarging lens....

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From memory, I think resolution depended on one of those reciprocal equations, like

1/RF = 1/RTl + 1/REl
where
RF = Final or overall resolution
RTl = Resolution of taking lens
REl = Resolution of enlarger lens

What is missing in the above, is contrast, without which the resolution can not be seen, so I'm not sure if there's any value in it anyway!

I've had commercial 20x16 Cibachromes made (optically, I believe) from very sharp 5"x4" trannies which were clearly of a significantly lower resolution than A3+ prints made on my Epson 1270 from scans made on my Epson 4870. Needless to say, I have not given any more business to the well known lab which made the Cibachromes! Just wish I could improve the colour rendition from my scans!

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Malcolm Stewart

Edited by Malcolm_Stewart (16/05/2008 13:01)

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