Question about Canon (12x36) IS II Binocular

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My canon 12 x 36 image stabilizer binoculars are making double vision. The end lens away from the face are really loose and a tiny screw fell out. They have not been dropped. not sure what my options are. It seems they need to be looked at by a repair service. what are your thoughts?

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Posted on Jan 02, 2017

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SOURCE: binocular double vision

you binoculars are probobly out of alignment. Having them realigned costs about $100. If the binoculars aren't expensive, you might want to try this yourself. Basically, one of the front lenses is off-center, and you can rotate it in its mount until the alignment is right. (I.e., it's off center in the right direction.) You will need an optical spanner (which Americans redundantly call a "spanner wrench") or an improvised substitute in order to do this.

Posted on Feb 12, 2006

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SOURCE: Binocular Double Vision

We can align yur binoculars for your for 25-30.00 plus 5.00 to ship back to you. Some units have handy set screws to make adjustments from outside the unit. Call me, wwwbinocularservice.com
Art

Posted on May 10, 2008

  • 32 Answers

SOURCE: double vision

I'm assuming you have set the dioptre correctly for your eyes.

Normally this is caused by a collimation error when one (or both) prisms move. This can be by a small amount.

Your going to have to take them in for service/repair to fix this as is not a DIY problem. (Unless of course you have a collimator lying around)

Posted on Mar 25, 2009

  • 26 Answers

SOURCE: double vision. how do I fix this?

have repaired these before....have to be collimted...not the best bino for the buck, but would cost about 45.00 with shipping...larry 5088331232

Posted on Jun 22, 2009

  • 112 Answers

SOURCE: Our group has 2 pairs of Canon Image Stabilizer

when salt water gets in ..if its not cleaned soon then its probably to late...the cost of repair wuld be more than a new one...sorry...larry@reichinstruments.com

Posted on Aug 06, 2009

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How do I collimate my binoculars please because they have double vision.


It'll depend a bit on the root of the problem.
You can get double vision from properly aligned binoculars if the optics are too far apart or too close, relative to the spacing of your eyes. you'll need to bend them at the central hinge to make sure that both eyes are centered on the input lenses.

If you're still getting the migraine-inducing double image, they probably got dropped at some point. This can be a wide range of difficulty to fix. Here's what I've done in some past cases with flea market binocs that I bought cheap due to the skewed alignment.

For many binocs, the upper (eyeball end) and/or lower (field end) are screwed to the central body of the binocs, where all the folding optics are to widen the lenses from your eye spacing. If they have been dropped, (or disassembled and put back together sloppy), then they may be cockeyed at one of these joins. Look at each seam to the central body and see if any of them have a gap, especially one that is larger on one side than another. You can then apply firm un-screwing twist and see if it will unscrew. if it will, and before you unscrew it all the way, wash your hands and clear a clean surface to work on. Unscrew the segment, inspect the threads for crud that might have got in while cockeyed. Then visually square up the component and gently screw it back in. if it was mis-assembled, the threads may be a bit gummed, and you'll have to be patient to keep the optic square, and back off and start again if it tries to drag over to cockeyed threading. Once it's square, gently working the thread back into place by turning back and forth a half turn back, 3/4 forward, half back, 3/4 forward, can help the thread recuperate. Eventually, it should screw all the way in, firmly, and be square. No more double vision.

For some models, like my Nikon fixed pocket binocs, there's no zoom and just a focus knob. On my brothers pair, it got cockeyed. In that case, I gently unscrewed the locking rings for the glass on the eyeball side. One of them was loose and the lens was a bit cockeyed. In that case, I removed, it (wearing nitrile gloves), cleaned it with eyeglasses cleaning solution and a microfiber cloth, put it back in, screwed the ring in firmly,and it was good to go.

Bottom line, if you have some basic DIY skills, unscrewing the entry optics, or the optics sections, isn't too big a deal. Just be mindful not to let dust (or worse) get inside while you have things open. You can get a lot of fix just from that much.

Good Luck!

Mar 11, 2015 | Fujinon Mariner WPC-XL Binocular

Tip

Blurry Binoculars?


If you are getting a blurred or double image through your binoculars don't throw them away.
Hold them at arms length and look at the spot of light coming from the ocular lens. If they are shaped like cats eyes they out of collimation but in most cases this can be fixed.
The prisms need realigning. This is done by tilting the binocular's prisms by making tiny adjustments to screws found under the binocular's outer armour. You could try this your self with a 2mm screw driver and a bit of trial and error or you could contact us at www.binocular-repairs.com for an estimate.
We have over 30 years experience in this field and have the technology and the spare parts to mend most makes and models of binoculars and telescopes.
I hope I can be of assistance.
Regards,
T.E. LockAssoc. DirectorOpticalia Ltd

on Jul 14, 2011 | Bushnell Optics

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.

Apr 16, 2014 | Celestron Tripod/Wedge NexStar 4GT/5i -...

1 Answer

One image is slightly above the other at all distances. After using the binoculars for even a couple of moments, my eyes are strained. The problem was present when the binoculars were purchased, however...


The oculars are not aligned properly causing double vision. Check on the binoculars to see if there is a place to adjust the alignment of either of the oculars. Look for any loose screws that may cause the two oculars to be out of alignment.
If this is not the case try adding some torque to the binoculars to see if the will adjust to where they will both point in the same direction. The eyes can fuse disparate images slightly but there is a very small range that they can handle. If the two images are separated by more than this small amount it will cause eye strain and double vision.

Feb 13, 2011 | Minolta 10x25 Activa D WP XL Pocket...

1 Answer

Tint has come away from lenses


Hello, do you mean that lens coating fell off? I hope not, but who can say when these Night vision monoculars and binoculars are soley manufactured in Russia. Hint: auction it on eBay. US Night Vision Optics will not warranty the lens coating, sorry. GB...stewbison.

Dec 01, 2010 | US Night Vision D-343 Monocular

1 Answer

My Canon 10x30IS Image stabilized binoculars show a double image. Both sides focus and stabilize. Can I do something to fix it or should I send them in for repair?


Like I said before, one of the prisms has shifted and the binoculars have lost collimation. This is not something you can fix yourself.

Nov 18, 2010 | Canon IS (10x30)

1 Answer

I seem to have a slight double image. when I unscrew one side of the lens a bit it lines back up, but leaves the lens loose. What could be wrong and can it be fixed? thanks,Brent.


You have the classic signs of the most common binocular fault: a bent or broken eyepiece carrier yoke.

The cause is usually due to the binos being dropped or the eyepieces getting knocked. The only cure is a replacement yoke, but the repair is rarely cost-effective unless the binos are really expensive and top-quality models. When last available new, yours sold for just over US$100 and repairs will typically far exceed that price.

Broken/bent yokes cannot be repaired: If bent, then it's near-impossible to unbend them accurately enough and in any case the process will always either break the yoke or will severely weaken it. Broken yokes cannot be glued together as the contact point is just too tiny for the loads it carries, and as it usually bends before breaking you'd simply end up with a bent yoke afterwards even if you could glue them.

Sep 10, 2010 | Pentax PCF V Binocular

2 Answers

Double vision


take it into an outdoor shop and they can check the mirror alignment, seems that it may have "altered' itself

Jun 22, 2009 | Zeiss Classic B/GA 524013 Binocular

1 Answer

I am suddenly seeing double images theough my binoculars.


Up close to the eyepieces around the barrels are small screws that you can use to "collaminate" your binocs. The screws aren't meant to be accessed by the owner and most manufacturers cover them up with the material that surrounds the binocs. Of course the binocs in their current state are useless anyhow, so I wouldn't hesitate to peel up the material to look for the screws. If you do it carefully, you can reseat the material anyhow. Then once you locate the small screws, put the binocs on a stand or a table outside. Focus on something far away using one eye. Then using both eyes, you adjust the screw on the other eyepiece while looking through the binocs. Adjust until you get a single image. You can use loctite, or nail polish to "glue" the screw in the final position if it is really loose.

Apr 25, 2009 | Eagle Optics Energy (8x21) Binocular

3 Answers

Binocular Double Vision


We can align yur binoculars for your for 25-30.00 plus 5.00 to ship back to you. Some units have handy set screws to make adjustments from outside the unit. Call me, wwwbinocularservice.com
Art

Mar 05, 2008 | Magpix B350 Binocular

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