something moving in lens : LUSENET : Large format photography : One Thread

Just purchased a Schneider APO Symmar S,150mm. I see that when I cock the shutter, and then change the shutter speed, when I turn the shutter dial, I here the shutter make a little noise. If the shutter is not cocked, it doesn't do it. Should I not change the shutter speed after I cock the shutter? Did I do any damage the this lens? Its used, so no directions.

-- Raven (, April 07, 2000


Changing the shutter speed when the shutter is cocked is bad for the shutter. I read this in the instructions to one of the new lenses I bought.

-- William Marderness (, April 07, 2000.

I forgot to also state that when I hold the lens and move my wrist back and forth, it feels like something is moving in the lens. I assume this is the shutter, what else can move? Is this a sign that somethings wrong, or its normal? This lens is used, but in A-1 mint condition. I'd say I moved the shutter speed about 5 or6 times with the shutter cocked, playing around with it till I get it put on the lens board. Any damage?? I could hear the friction against the shutter. Arggg!! Green around the gills!

-- Raven (, April 07, 2000.

Dear Raven, is that a Copal 0? If so, I think your noise is normal. As far as the speed change, the guy who sold me mine told me at the point of sale not to change the speeds after I cocked it, and then he said, but it probably doesn't matter, you can change it if you want. Hope this helps. I really don't know anything about shutters, but with the above noises, mine works OK. David

-- david clark (, April 07, 2000.

Thanks. I noticed that every speed is fine, but 1/60 seems to make noise. I think I might just get it checked to see that this particular speed is acuarate.

-- Raven (, April 08, 2000.

My Copal 0 makes the same sounds and I've never really payed much attention to it. Why? Because I've heard several different shutters, including the one in my old Minolta SRT-100, making the same noises. I'm thinking it has to do with the mechanics that drive the shutter and the internal adjustments that have to be made to properly execute a higher or lower shutter speed. Just a thought...

-- Dave Munson (, April 08, 2000.

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