Question about Swift 754 Binocular

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The prisms on the two sides of the binoculars are out of alignment. My binoculars need to be columnated.

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Hi How much did they cost and how old are they, look through the bino's the wrong way if you can see marks or lines then believe it or not you have fungus growing so forget it. you must have dropped them to put them out! so claim if you can and buy some new ones. hope this helps

Posted on Apr 09, 2011

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1 Answer

How to get my single image back?


Although It may not appear to have prisms because of the sleek barrels, they do infact have roof prisms in them. Most likely one of the prisms is out of position. Bushnell typically has a great warranty so contacting them to have them repair it would be my recommendation. Here is there service group link: Bushnell Repair Services. If you need additional guidance do not hesitate to contact the folks at RCS Optics

May 09, 2015 | Bushnell Powerview 13-1632 \ 1633 (16x32)...

1 Answer

Lens alignment


generally under the edges of the covering at the eyepiece end there are tiny screws that are used to adjust the prisms in the binoculars, generally out of alignment issues are caused by the prisms being out of alignment.

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Accidentally dropped Bushnell Legacy WP 10 X 50 binoculars. Now they have a double image. Is this something that will need professional repair?


Yes, and unfortunately it will cost more than these binoculars are worth. What has happened is that one or more of the prisms inside the binoculars has shifted, putting them out of "collimation", or alignment.

You could have a go at this yourself, as a proper repair is not economic, but treat it as a learning experience.

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My nikon 10x50 action binoculars have developed the problem of the left and right lenses not viewing the same image. the left side view is much lower than the right. i don't know if the prism was knocked...


Common problem with binoculars after a knock. One of the prisms has shifted, putting them out of collimation (alignment). If they are very high quality or collectible they might be worth fixing. It is likely to be expensive. I have done a few pair myself, but only when it was uneconomic to have it done professionally (I have ruined a few too).

Nov 21, 2010 | Nikon Optics

1 Answer

Our grandson dropped our binoculars and now we have a double image.


This is a common problem with binoculars. One of the prisms has shifted and the two sides are therefore no longer in optical alignment (collimation). Unfortunately, fixing this requires a degree of expertise, which may cost more than you will want to spend. I have often taken old binoculars apart or found external adjustments that allowed me to realign them, but I have ruined a few pair this way. Not a good idea if they are valuable.

If you can find the paperwork and they are still in warranty, you might try to get Canon to repair them, but I suspect that they will say they have suffered an accident, not a manufacturing fault.

Nov 18, 2010 | Canon IS Binocular

1 Answer

Lenses not synched


tghere are usually a couple of grub screws under the rubber covering of the prism housings, these adjust the prisms to align each side of the binocular relative to each other.

Mar 30, 2009 | Swift Audubon 804ED BWCF Binocular

2 Answers

I fell and now the two eye pieces are out of alignment.


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.
Please contact for further information
Kind Regards….Dave

Jan 03, 2009 | Swift Ultra-Lite 762 Binocular

2 Answers

I have double image on binoculars and left eye is dim.


you get this if you happen to drop the binocs. prism alignment disturbed. once adjusted will get single and sharp image.

Aug 13, 2008 | Canon PowerShot SD500 / IXUS 700 Digital...

1 Answer

Canon 12x36 is binoculars


Your alignment is out in the vertical. There are two prisms on each side and you want to adjust the lower ( on the right side ) prism so that you correct the image in the vertical dimension. Caution : it doesn't follow that just because the image seems to be out on the right hand side that it is the right side that fas to be adjusted. So be prepared to adjust the other side. Also the best is to adjust little bit on each side until alignment comes right.

Sep 03, 2007 | Canon IS Binocular

2 Answers

Moisture


You have to open each side ( nikon travelite covers just unclip ) to get to the 4 prisms. Once opened to clean make sure you do not break the glue that holds down the prisms ( move the prisms in their seats and your alignment is out ). Clean with window cleaner and isopropanol to finish.

Aug 22, 2007 | Nikon Travelite V Binocular

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