Apo-Extender-R 2x - Mountinggreenspun.com : LUSENET : Leica Photography : One Thread
Hi, I would like to know if it is normal that I can't get to the smallest apertures of my lenses once the extender (with ROM strip) is mounted on my R8 (the ring stops about two stops beforethe smallest value).
I thought it was because my 280/2.8 Apo Telyt (1st version) didnít have the ROM strip, but now I've tried with my 80-200/f4 Vario Elmar (ROM) and have got the same result. I haven't used it enough to realize if the exposures are correct (that is at different stops).
Just to complicate things I could almost swear that in some occasions, this didn't occur. I've tried to put the extender on the camera first or vice versa, at different f stops, but havenít found the solution.
Is there something that I don't know or is it a problem of my extender (I bought it second hand) ?
Thanks in advance (especially for all the precious information I've found in the forum).
Pier Paolo Miniussi
-- Pier Paolo Miniussi (firstname.lastname@example.org), May 09, 2002
My extender is non-ROM, but have you stopped down the lenses fully before mounting them to the extender? If you don't, the diaphragm linkage will not work properly, giving the problem you describe.
-- Neil Johnstone (email@example.com), May 09, 2002.
Neil: I am confused about this. I have never heard that you must stop down the lens before hooking it onto the 2x adaptor. are you sure about this?
-- Albert Knapp MD (firstname.lastname@example.org), May 09, 2002.
Yes - it's in the instruction leaflet for the Extender. However, as the lens will usually be wide open when using an Extender, it's not normally a problem if the lens is mounted at different aperture.
-- Neil Johnstone (email@example.com), May 10, 2002.
Neil, if I stop down the lens completely, it doesn't couple with the extender at all: something (I believe one of the two cams) interferes mechanically.
If I mount the extender on the camera without a lens, the two cams are positioned anti clock wise in their slots and if I push the depth of field lever only one of these cams move (the other unlocks but doesnít move): is this correct?
Pier Paolo Miniussi
-- Pier Paolo Miniussi (firstname.lastname@example.org), May 10, 2002.