Thanks - let me see if I have got this right, then.
With only manual tubes if I set the aperture on the ring to f16, say, the aperture on the lens will immediately close to f16 leaving the image dark in the viewfinder. If I get a set of auto tubes (with manual aperture linkage) then setting the aperture ring to f16 will leave the aperture wide open to focus and compose. At what point will the aperture close to f16, when I use the green button to stop down meter or when I take the photo? ie. when will the image in viewfinder go dark?
At the moment with my manual lenses I set the aperture on the ring, focus and compose, use the green button to meter, recompose and focus, take the picture. With a set of tubes with aperture linkage I can still do this, with a manual set I need to work wide open or do as you suggest above?
Is that right??? Sorry for being thick!
So basically the manual tubes aren't much use unless I shoot fairly wide open all the time? Should have said I have a K-r if that makes any difference.
Last edited by milamber; 02-13-2012 at 05:45 AM.
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