Panagor automatic extension tube set

I swear I wanted to read the manual before the house ate it and it disappeared for ever. This extension tube as the aperture lever but I have no clue if it's actually working or not. Green button and aperture preview are not working. How am I supposed to use it? Using with a vivitar 105 Macro using the aperture ring to set the aperture

Hard to tell without seeing them. Could it be an earthing issue?

the step down metering works without them, should I assume something is wrong?

Could it be the same issue as this? :




The scraped away area was required to get an earth return.

Do your tubes have electrical contacts? As I said, its hard to diagnose the problem without seeing it!

I have a set of Jessops auto extension tubes and everything works fine.

No, no electrical contacts it should work like a M lens with the aperture set right before the shot

Ok another question I am experiment now coupling the tube extension with a 2x tele conversion.. Is something someone else tested before? Should I put the tele adapter before or after the tubes?

Yes, it should work like an M lens then. M mode and green button metering. Check that the aperture lever is working the aperture mechanism; it should do.

if I move the lever myself (using my hands ) the aperture works, however with the camera still don't. I will buy a vivitar a22 series, I can't go wrong with those.

Oh well, sorry to hear that. I wonder why it isn't coupling correctly.