Question about Zhumell SuperGiant Astronomical Binocular

1 Answer

Double Vision No matter what width I set the eye pieces I have two images. Is there a way to adjust this or a repair that needs to be made. Thank you, dg1811

Posted by on

1 Answer

Re: Double Vision

Check this response and see if it might apply to you too:


Good luck.

Posted on Oct 10, 2007

Add Your Answer

0 characters

Uploading: 0%


Complete. Click "Add" to insert your video. Add


3 Points

Related Questions:

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

I have a pair of Plastimo military binoculars which have been fine up to now, but suddenly, despite being able to focus using the two eye piece controls, I cannot get anything other than a double image, no...

Hello - I never had Plastimo before but I have had a similar problem with double vision on a very similar looking pair of binoculars.
The eye piece movement just re-aligns eye focus differences , a double image usually means one of the lenses has moved inside the main tube. (usually from a knock/fall etc)
Can you rotate either one of the tubes ? On my pair I had to rotate anti-clockwide and found a prism inside that had slipped after a fall -
Close one eye and try to gauge which side is the best side -- Ray

Feb 05, 2011 | Plastimo Binoculars & Monoculars

2 Answers

Seeing double when I look with both eyes. Out of

Step 1.
Adjust the eyepiece or both if both are adjustable back to zero. It should be printed on there. If it's not, then halfway. To find halfway turn them to one end, count the number of turns like 1 and a half turns for example, and then half that atnd turn it that ammount. You've now reset the binoculars to zero.

Step 2.
Now to focus. Pick your target that you want to look at thoguh your binoculars. Look through the binoculars and close the eye with the adjustable eyepiece or your right eye if both are eadjustable and focus the image on the left eye with the central focus knob. Once you've got it focused close the left eye, open the right eye and if it's not in focus adjust the EYEPIECE focus, not the central one, until it's in focus.
If you can't get it in focus because the eyepiece focus won't turn far enough in one direction, turn the OTHER eyepiece in the opposite direction at max, start the process again from step 2.

If it's all ok now you need to adjust the distance between the eyepieces. Open the binoculars as far as they go, look through the binoculars with both eyes on the target and move the binoculars inward slowly until you remove any black edges around the image, then move them very slowly inward until you see only one image.

If you've got more problems come back as ask. :-)

Nov 27, 2009 | Vector Audubon 8x42 Binoculars

1 Answer

I am seeing a double image whel I look through my binocular.


Most binoculars should allow you to grip the two sides and pull them closer together to fit the distance between your eyes.. Have you tried this?
What you should see is the two images come together to form one.

If you have tried this already and you still get the two images then it's possible the model is just too wide for your eyes.. If they're new you could try return them for another type that fit better..

If this works for you then here are the instructions for setting up the binoculars to give you the best result for your eyesight..

This is more common than you would think.. Here's how to set up a pair of binoculars to suit yourself.
Any good binocular will be able to do this and the reason is to allow you to adjust them for the difference in strenght between your two eyes. I wear glasses myself and sometimes contact lenses so it's good to be able to quickly adjust them.

1. turn the binoculars over so you are looking at the underside.
2. on the eyepieces can you see on one eye(usually the right eye) a little plus - minus marking. The eyepiece should be able to rotate a little to each side of this marking.
3. Set the rotating eyepiece to the middle setting.
4. Look through the binoculars as normal and bring the two sides together until you form the two circles that you see into one.
5. Pick an object app 10 meters away.
6 Presuming that the adjustable eyepiece is on the right hand side then close your right eye, look at the middle distance object you chose with your left eye and use the central focusing knob/wheel in the middle to bring your left eyepiece into focus.
7. Now, close your left eye and adjust the rotating right hand eyepiece while looking at the same object until your right eyepiece is in focus.
8. The binoculars should now be set for the differences in strenght of your eyes and you can use the middle focus control as normal.

Most binoculars have a soft rubber eyepiece that can be folded back for people who wear glasses but I, like most people I know who wear glasses, find it horribly uncomfortable.

This method allows you to set them for yourself and if someone else uses your binoculars you can quickly reset them for you.

Hope this helps...

- Oh yeah, sorry, forgot to mention.. This set up is so you can use them without wearing your glasses.. Much more comfortable!!

Oct 20, 2009 | Sharper Image Binoculars & Monoculars

1 Answer

Binoculers do not appear to be focussing properly.

Binox have a prism in each barrel to invert the image. When dropped or banged around the prisms may move in their mounts creating the problem you present. I have opened binox and reset the prism effecting a correction, but IF you unit is nitrogen filled you will be losing that anti-fogging benefit. If you choose to open your pair, check for movement in each prism, neither should be loose. Once you find the original proper placement, a drop of crazy glue does wonders - just a drop on one edge.

Jul 12, 2009 | Binoculars & Monoculars

1 Answer

Image appears double and slighly off when viewing

I was having a double vision problem with my Barska 10-30X50 zoom, 195FT/100YDS binoculars. One image was always higher than the other. This was tolerable at low zoom, but was further aggravated the more I zoomed in. I found that I could grasp both barrels and twist them in opposite directions (one side up, the other side down) and force the two images to merge--but that was a strain and an unpleasant viewing experience. As an experiment, while looking through the binoculars, I grasped the far end of the right barrel and twisted it on its axis. Nothing happened at first, but after a certain amount of resistance it began to rotate independently of the body. Lo and behold, this shifted the barrel's axis, and the image for that eye moved vertically! I turned it until the two images merged, and now I'm thrilled to say that the problem is solved! I don't have a clue if this would work on any other brand or model, but it's worth a try!

Apr 06, 2009 | Tasco Sonoma 16-840WA-1 (8x40MM) Binocular

1 Answer

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)

Mar 24, 2009 | Bushnell H2O 13-2412 (12x42) Binocular

2 Answers

Double tunnel vision

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

Normally this is caused by a collimation error, caused when one (or both) of the prisms move, even by a small amount.

You will need to get this repaired/serviced as this is not a DIY problem. (Unless, of course, you have a collimator lying around)

Mar 21, 2009 | Binoculars & Monoculars

1 Answer

Double Vision

Your glasses have had a hard drop or jar- they are out of colluminatiom send them to Deusch Optics in Nevada

Jul 31, 2008 | Oberwerk (OBERWERK1030X60ZOOM) Binocular

Not finding what you are looking for?
Zhumell SuperGiant Astronomical Binocular Logo

260 people viewed this question

Ask a Question

Usually answered in minutes!

Top Zhumell Binoculars & Monoculars Experts


Level 3 Expert

94198 Answers

Donald DCruz
Donald DCruz

Level 3 Expert

17129 Answers

Joe Lalumia aka...
Joe Lalumia aka...

Level 3 Expert

3185 Answers

Are you a Zhumell Binoculars and Monocular Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides