Super A, aperture not working?
Posted 04/01/2012 - 22:13
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First thing to check is that the lens is mounted properly.
Make sure that it is completely on and won't undo without using the release catch.
Make sure that it is completely on and won't undo without using the release catch.
Bob
Posted 04/01/2012 - 22:36
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There's a lever inside the mount which engages the lever on the lens to keep the aperture open. On my z70 this is lowered so it engages with the lever on the lens as you turn it into position. On the superA it is raised, so the lens lever doesn't touch it. I can pull it down with my nail, it gives little resistance, but it returns to the raised position.
Posted 04/01/2012 - 22:59 - Helpful Comment
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Yes, that is the lever that stops the lens down when you fire the shutter. Should be down when the camera is not taking a picture.
Is the depth of field preview lever operating ok? (on the right hand side of the lens mount. This should move that lever inside the mount, to stop down the lens.
Is the depth of field preview lever operating ok? (on the right hand side of the lens mount. This should move that lever inside the mount, to stop down the lens.
Bob
Posted 04/01/2012 - 23:09 - Helpful Comment
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Is the DOF preview lever (stop down lever) jammed in its operational position?
Best regards, John
Posted 04/01/2012 - 23:18
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Pentaxophile wrote:
There's a lever inside the mount which engages the lever on the lens to keep the aperture open. On my z70 this is lowered so it engages with the lever on the lens as you turn it into position. On the superA it is raised, so the lens lever doesn't touch it. I can pull it down with my nail, it gives little resistance, but it returns to the raised position.
It should be down on the Super A also. The return spring has probably become detached. There's a lever inside the mount which engages the lever on the lens to keep the aperture open. On my z70 this is lowered so it engages with the lever on the lens as you turn it into position. On the superA it is raised, so the lens lever doesn't touch it. I can pull it down with my nail, it gives little resistance, but it returns to the raised position.
Regards - Steve
Posted 04/01/2012 - 23:36 - Helpful Comment
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I hope the blast was on the outside!!
Generally it is best to keep WD40 well away from cameras!
Hope you enjoy the Super A. I had mine new back in the 80's and It's still going strong.
Generally it is best to keep WD40 well away from cameras!
Hope you enjoy the Super A. I had mine new back in the 80's and It's still going strong.
Bob
Posted 04/01/2012 - 23:44
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Quote:
Generally it is best to keep WD40 well away from cameras!
Apart from gunking up the mirror, focusing screen and shutter I cant see what the problem would be, oh! apart from getting onto the inside element of whatever lens is fitted
Generally it is best to keep WD40 well away from cameras!
Posted 05/01/2012 - 09:11
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Sounds like a very Rocky camera
Half Man... Half Pentax ... Half Cucumber
Pentax K-1 + K-5 and some other stuff
Algi
Pentax K-1 + K-5 and some other stuff
Algi
Posted 05/01/2012 - 10:07
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Hmm yes perhaps so! I kind of half anticipated needing to do the light seals to be honest. Oh things are much simpler with the P30 series cameras (and later cameras), which don't have foam light seals!
I found a tutorial on using wool thread rather than foam as a replacement light seal - looks a bit easier - http://photo.net/classic-cameras-forum/00SVtt?start=0
I found a tutorial on using wool thread rather than foam as a replacement light seal - looks a bit easier - http://photo.net/classic-cameras-forum/00SVtt?start=0
Posted 05/01/2012 - 10:24
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I've used wool on quite a few cameras and it has always worked well. Use a glue with a bit of give (i.e not superglue) so that the flexibility of the strands remains when it dries. Velvet edging tape works well and is cheap (about a pound per meter from sewing/craft shops) for the light seals at the door edges and along the hinge.
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