Jupiter 9

[Tervueren]

I've just rec'd one of these and it bears the LZOS logo serial number N7506957, it's seems to be in very nice condition but either I'm being thick or someone's been mucking about with it, when red dot aligned with f16 it's wide open so that when you select f2 its actually f16 ???

[peterqd]

No, that's the way it's intended to be. The H44-2 is the same.

The red dot on the stop down dial is meaningless. I think the reason for it might be simply to show the current dial position, but the whole idea of preset lenses is that you don't need to take your eye away from the viewfinder, so that idea is probably wrong.

[JohnBee]

[iangreenhalgh1]

No, it doesn't indicate it's been mucked about with, what Peter says is correct.

[abe in space]

Yeah, nothing to worry about. My Mir-1V is the same way; the preset ring and the aperture ring seem to make it run in reverse according to the dot.

[Smoli4]

nothing to worry about here, its the correct aperture design, same (as said before) in Mir 1B, same in helios 44-2 and same in new and old jupiters.
its build that way because its meant to be aperture holder or stopper, the click wheel witch locks in place is the reason for this design. not the same as other lenses where you dont have the clicky part ring that stops the aperture ring.

[IAZA]

that's normal for some Russian lenses

[Tervueren]

Thank you all now to give it a try, it was this one Click here to see on Ebay

[martinsmith99]