Question about Swift Ultra-Lite 762 Binocular
It is like seeing double. What should I do? Is this easy to fix? Or should I consider buying a new pair? I really love these and hate to loose them.
This a problem with the prisms in the main body of the binoculars. It would seem that one or more have moved (there are four). Realigning is a difficult job but not impossible. Depending on the design, it should be possible to gain access to two of them, and hopefully you will see which one has moved. When aligned at factory, the prisms are usually held in place with a flat or “leaf” spring, and spots of paint/glue. This may give you a clue when you examine the prisms, and compare both sides.
To gain access to the bottom two prisms, try unscrewing the objective lens tube (the conical bit) from the main body, You may also need to remove one or two tiny screws that hold the protector plate in place. Do both sides at the same time so you can compare. With any luck, you might be able to re-seat the jarred prism to its original place. The top two prisms are harder to get to requiring the dissasembly of the focus mechanism, but if you go carefuly, you may get lucky, after all you have nothing to loose. Remember that binocular alignment does not need to be perfect, if it’s pretty close, the brain will compensate for any minor inaccuracies.
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Posted on Jan 03, 2009
Collimation errors, as Dave talks about, can be repaired by a service workshop with a collimator if you can not get it right yourself. This is not something I'd normally recommend someone trying for themselves.
Posted on Mar 25, 2009
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Posted on Jan 02, 2017
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