Just received my Schneider 90 mm Angulon F 6.8 and cannot figure out how to open and close the diaphram. I assume the round knurled button, adjacient to the shutter speed setting is the device to use. I can move it in and out but it doesn't open or close the lens. Thanks in advance for any help!
The round button cocks the shutter to fire it. There should be a small sliding lever on the opposite side that will open and close the blades.
Compur or Copal shutter?
Randy,
Sounds like you have a Compur shutter.
Set the shutter to 'B' or 'T'. Cock the shutter and fire it with the cable release and hold the shutter open with the cable release, then press the round button down and back. Release the shutter and it should stay open.
I have to remember to do this when I use my 75 mm SA, but I think this will work.
Don Bryant
Some Compur shutters have press pre-view. Look for a rectanglar shaped button next to the cocking lever. Cock the shutter first before pressing the pre-view button.
My lens is a compur. I have tried pushing back the metal button adjacent to the shutter speed setting mark, with shutter set on B and leaving the diaphram open. It makes a click but when I release the shutter release the lens closes back down.......
Randy,
Take a look at this link, http://www.skgrimes.com/compur/slftime/index.htm.
Jason- Thanks for the attatchment. My self timer does work. By the old Schneider Angulon having the self timer, does that mean I don't have a pre-view option? How am I going to see image on ground glass to compose and focus?
Randy,
Use the T or B setting and a cable release.
Jason.
Jason- I guess that is what I need to do on this lens. Thanks for your assistance!
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