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Is diffraction a problem of modern lenses?

No.3536193 ViewReplyOriginalReport
I shoot a few times with a old manual focus lens on a modern DSLR.

And I noticed how good the image looked even with F16

Meanwhile with modern lenses, at F16 you loose a lot of the sharpness.

Is this some old tech that was lost?

Or is this by design? Back then people had to shoot on hyper focal. So shooting on smaller apertures was very normal.