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 Replies: 10 / Views: 2,522 |
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Pillar of the Community
United States
1314 Posts |
Please help...
I bought a Pentax K-x because I had a Pentax P3n and several lenses that I thought were compatible.
The Sigma Macro 1:2.8 f=50mm worked like a champ for coins.
But Fall in Wisconsin prompted me to try a Auto Zoom (Sears) 1:4.0 f=70-210mm.
It went on easily, didn't lock up tightly, and cannot be removed by conventional methods.
Any advise is appreciated. I hope I don't have to send it to Pentax, as I can't bear to be without it for any length of time.
Thanks All,
Kurt
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Rest in Peace
United States
1729 Posts |
The only thing locking a lens to a KX should be a tiny pin which is drepressed via the release tab on the left (from front) side of the lens. Of course, you have to turn the lens counterclockwise once the tiny release pin is recessed as you press the tab.
So I'm assuming that (1) your camera mount is either rusted (unlikely) or has something very sticky that has glued the lens to the mount, or (2) the Sears lens somehow didn't fit the camera and was forced on (unlikely, by your statement).
You're not going to like this, but assuming that the tab is indeed depressing the pin and releasing the lens, you're going to have to use something to dissolve the rust or sticky whatever so that you can turn the lens. I'd start with acetone first, applied with an eye dropper and the camera held vertical, so that the acetone is unlikely to run inside the camera body. Now, neither the body nor lens is very expensive and certainly not rare, so if after several applications of acetone the lens doesn't budge, you're going to have to progress to other solvents which may have an ... um ... negative effect on your equipment, plus a strong grip-and-turn. Good luck!
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Pillar of the Community
United States
860 Posts |
Sometimes , even when I knew they were compatible, a lens was difficult to remove. Using even a regular amount of force can distort the lens barrel mount a little. Try finding a jar lid remover, one of those ribbed things that applies force more equally around the base of the lens, they sure make it easier for me. As mentioned above, don't force beyond what seems appropriate.
Jim
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Pillar of the Community
 United States
1314 Posts |
Thanks Jim,
The lens is off.
I shook, jiggled, tilted in every direction, prepared a .002" feeler gauge for slipping, and then it popped off.
I was just being too gentile... I'm new at this, and have a long history of breaking things.
Motorcycles, parachutes, firearms, computers, helicopters and relationships.
But I didn't want to break my camera.
I would like to know if the aforementioned lens is compatable with my camera. and if I need an adaptor. But I will not be putting it back on until I get more information.
Thank You for the advice,
Kurt
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Pillar of the Community
United States
1314 Posts |
PLS,
Thanks for your input.
It's nice to learn that so many people are covering my back.
The approach you suggested proved unnecessary, but I did get the Acetone and Q-tips just in case.
As smart as you are, you'll probably have many opportunities to save my tail feathers.
Thanks Again,
Kurt
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Moderator
 United States
23522 Posts |
I have to admire a man who can break both a parachute and a helicopter and remain present to talk about it.
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Pillar of the Community
United States
3076 Posts |
I just loved his comments  I was rolling on the floor, still am....Great you got your lens off! |
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Rest in Peace
United States
1729 Posts |
Thanks, Chute72. Glad you got the lens off.
I don't see why even a Sears K-Mount lens would give you trouble, unless the lens is quite a bit newer than the camera. The KX goes back about 20 years or so, if I remember correctly, but the Sears lens (probably made by one of the same companies that make Vivitar lenses) may be the problem. Check its mount carefully for other protrusions and even sticky stuff on it.
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Pillar of the Community
Canada
535 Posts |
I too have a Pentax K-X but I have never had any trouble using all of my old lenses from my K-1000. I believe that all the K mount lenses are compatible with the K-X.
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Pillar of the Community
United States
1314 Posts |
I discovered the source of my problem. EVERY Pentax user should look at this. It is called the RICOH Pin. Some lenses have this spring loaded pin, and when it falls into a recess in the camera, it can be difficult to remove. It is like breaking a key off in a lock. Follow this link and read what is above the third and fourth photos. It may save you from some frustration. http://www.pentaxforums.com/forums/...-mounts.htmlThanks, Later, Kurt |
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Valued Member
United States
318 Posts |
Years ago, my Mom gave me a 35mm camera with several lenses. The body had the lens release, but telephoto zoom lens was an oddball and also had a release you had slide at the same time as push the release on the body. Glad you got your lens off, but that's another thing you can worry about down the road.
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Replies: 10 / Views: 2,522 |
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Posted 10/04/2011 11:45 pm
