How to open the shutter of Fujinon WS 150mm f6.3?

[tak4343]

I bought a Fujinon WS 150mm f6.3 recently, but can't find a way to open the shutter.
There's a button which can't move (press, push or pull), is the lens malfunctioned?

[Jac@stafford.net]

What button? Do you mean lever?

See Thalmann's picture below and tell us which thing you are messing with.
http://www.thalmann.com/largeformat/images/Fuji_150.jpg

Maybe it is already cocked. Trip the shutter. No go?


.

[Peter Spangenberg]

If I recall, on some of the Seiko shutters, you have to use the "T"shutter setting to open the shutter and focus. Then compose and close up and switch to whatever shutter speed you want. I could be wrong, but that's what comes to mind.

[B.S.Kumar]

Look at this photo: https://picasaweb.google.com/104131518494734389012/Lenses?authkey=Gv1sRgCJ2ZuMjdxevtfA#6016106347995785186

Cock the shutter first, and then pull up the lever next to the cocking lever. That will open the lens. Push it down to close the lens and then take the photo.

Kumar

[tak4343]

I think it's the lever next to the cocking lever as Kumar said, will try tonight.
Thanks in advance, very helpful guys.

[domaz]

Don't force anything on Seiko shutters, they have a weak post on the timing gear that is very easy to break, making the shutter unfixable. Don't ask how I know.

[SParis]

Cock the shutter first, and then pull up the lever next to the cocking lever. That will open the lens. Push it down to close the lens and then take the photo.

Kumar

Thank you, Kumar, from 5 years in the future...

[Alan9940]

Look at this photo: https://picasaweb.google.com/104131518494734389012/Lenses?authkey=Gv1sRgCJ2ZuMjdxevtfA#6016106347995785186

Cock the shutter first, and then pull up the lever next to the cocking lever. That will open the lens. Push it down to close the lens and then take the photo.

Kumar

Additionally, just to be on the safe side because I'm always determining exposure last, I fire the shutter, then set shutter speed & aperture, recock the shutter, and take the photo. I don't know if this is necessary with Seiko shutters, but some shutters can get messed up if the speed dial is moved while the shutter is cocked. Maybe, Kumar or someone else knows the actual facts with regard to the Seiko?

[B.S.Kumar]

Generally, I believe Copal recommended that the speed should not be changed after the shutter is cocked, and that it was the primary factor for shutter failure, apart from normal wear. This should hold true for any other mechanical shutter. Seiko shutters on old Fuji and Mamiya lenses seem to work properly even after many years of not being used. These shutters were made by the same company that made the fine Seiko watches, so that is no surprise.

Kumar