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Rear lens cap for Krasnogorsk 3 Meteor lens?


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#1 Patrick Cooper

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Posted 23 January 2007 - 09:22 PM

One frustrating thing about the Krasnogorsk 3's standard 17-69mm zoom lens is that there is no rear cap supplied. A standard m42 mount rear cap will not work because of the weird shape of the back of the Meteor lens. When removing this lens and using another lens in it's place on the camera, I obviously don't want dust to gather on the Meteor lens' rear glass element or anything to scratch it. Have any of the K3 owners here managed to improvise something that can fit firmly over the rear element with no chance of damaging it? Would there be any piece or part from common household items or photographic items can could be utilised?
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#2 Olex Kalynychenko

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Posted 24 January 2007 - 04:33 AM

One frustrating thing about the Krasnogorsk 3's standard 17-69mm zoom lens is that there is no rear cap supplied. A standard m42 mount rear cap will not work because of the weird shape of the back of the Meteor lens. When removing this lens and using another lens in it's place on the camera, I obviously don't want dust to gather on the Meteor lens' rear glass element or anything to scratch it. Have any of the K3 owners here managed to improvise something that can fit firmly over the rear element with no chance of damaging it? Would there be any piece or part from common household items or photographic items can could be utilised?


The original set of Krasnogrosk-3 camera have original rear can for zoom lens.
This is small size of plastic cap and to install on rear side of body of lens, not on M42 screw.
You can take plastic can from photo film or any other cap with simialr size.
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#3 Dennis Kisilyov

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Posted 27 January 2007 - 11:10 PM

One frustrating thing about the Krasnogorsk 3's standard 17-69mm zoom lens is that there is no rear cap supplied. A standard m42 mount rear cap will not work because of the weird shape of the back of the Meteor lens. When removing this lens and using another lens in it's place on the camera, I obviously don't want dust to gather on the Meteor lens' rear glass element or anything to scratch it. Have any of the K3 owners here managed to improvise something that can fit firmly over the rear element with no chance of damaging it? Would there be any piece or part from common household items or photographic items can could be utilised?


Such an item does not exist.

Best thing I've seen for make-shifting one is a photo macro extension tube - a long one for the M42 mount (Praktica/Pentax) mount with 42mm screw thread diameter and 1mm pitch. This will prevent your rear element from being pushed by anything in a bag or a case.

The other alternative is to buy a Pentax rear lens cap and cut out the centre and super-glue a 35mm filmcan to it. Though it's not as push proof as a metal extension ring.
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#4 Patrick Cooper

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Posted 28 January 2007 - 12:41 AM

Very clever suggestions, Dennis. Thanks!
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