Both of my Nikon Action binoculars have double images, like I was cross-eyed. The solutions was the collimation had to be adjusted. Finding the collimation screws was the tricky part to the fix, but it turned out to be easy. Here’s how I did it. The task requires a 0.050″ hex wrench (1mm might work) too.
The pair on the left is Nikon Action 10-22×50. The pair on the right is 12×50.
Post-script: Bill Kast @swftwlly points out below that this is only a partial solution. A full collimation is more involved. and can be found at the link below. Thanks Bill.
—————————————- Contents of this video —————————————-
00:00 intro
00:54 Removing the rubber armour
01:14 Finding and adjusting the collimation screw
03:00 Entire job from scratch
I dropped my Aculon A211 10X42 and got the double image, at about 100 feet I could see two images of a license plate. When I got home I focused them in on a picture in the neighbors house. (It was night nothing else to tune them with) I looked through each of the sides with both eyes and decided which one looked the worst. I then adjusted that side as per the video with a .050 Allen wrench. I only pried a little of the rubber back to expose the screw. I was able to see the picture through the glass clear, and then fuzzy when I turned the screw (less than a full turn). I put the screw where I thought the best quality of vision was. It worked. The binoculars are restored to perfections. Thanks for the video. It saved me 100$
Request to Upload video on front lense fungi cleaning from inside
WOW! I just saved a brand new pair of 10-22×50 because of this video. Thanks a bunch. Nikon was no help at all, giving me a link on how to focus them instead of how to get rid of double vision. I ordered them from a store in another country so they weren't going to honor the warranty unless I expensively sent them back to that country. As if they aren't expensive enough to begin with. Anyway, thanks. Now that I can see out of them, they are a great pair of binocs. Don't be fooled by the origin of the company. They were made in China.
Good news! Thanks for showing how to collimate these guys, I bought a pair at a duty-free shop and had to return them on my next trip because brand new they were out of collimation. Got another pair in exchange. I found your video because I am looking for a way to clean the inside of the lenses. Wish it were easier to open these guys up. Can you offer any help? Is it worth cleaning them?
But how do you remove the cover? please show that
Man, THANK YOU!! I've had some 8×40 Egrets for years, and thought they were toast recently. Just fixed them. Thanks a bunch!
i had stopped my dads nikon aculon a211 and this happened and i thought all hope is lost and sir u are a god send
NIkon will fix or replace your broken binoculars for FREE. You don't need any warranty. You have to pay to ship it, and they will pay to ship it back to you.
I just bought some second hand. I was real upset when I got home and tested them to find that they had the double vision. Thanks to your video I managed to fix them in less than 10 minutes. Thanks you very much 🙂
Thanks Drew, this corrected the problem I noticed recently. Appreciate you taking the time to put this together. Happy New Year 2019!
Thx for yr effort. I was about to dump my budget bino. U are king!
Very kind of you to offer this suggestion, but you didn't really "fix" the binoculars. You performed what is called a conditional alignment. It will work at the interpupillary distance (the distance between the eyepieces) used when you adjusted the prism tilt screw, but once you "bend" the binoculars to change that distance, the double vision (misalignment) will reappear unless you return to the original setting. Full collimation is a rather involved procedure that requires access to all four adjustment screws. Details for full collimation can be found at https://sites.google.com/site/rafaelchamoncobos5/home/collimation-of-binoculars . Good luck!
Thank you I just purchased a pair of Nikon 16 x50s on Ebay and the alignment was off and thanks to your info I aligned them👍🏻
Worked for my Nikon Aculons. Thanks!
THANKS FOR THE HELP!! ; DO YOU KNOW HOW TO CLEAN THE LENS INTERNALLY? THANKS
Hey, thanks!
thanks for your help mate saved me a lot of money
Collimation is typically done by adjusting a total of FOUR setscrews. I adjusted the one you showed. It improved the "double image" but did not totally eliminate it completely. Do you know how do to get to the OTHER setscrew on that right side lens to adjust it also?