Question about Konica Minolta Activa Sport (8x25) WP Binocular

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Focusing the central wheel between the eye pieces is frozen and I cannot get it to move so that I can focus the left lens.

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My 18x50 IS binoculars are broken; the right eye piece won't focus and I hear a clunk inside when I turn it over; the left focuses just fine. What can I do and where; here in las vegas?


Sounds like you've dislodged one of the prisms inside. A service center can look it over for you, but from personal experience, it's cheaper to replace them than pay to ship them to/from the service folks plus the estimation fee just to find out that they'll have to be replaced, anyway. Sorry.

Jul 24, 2012 | Canon (18x50) IS Binocular

1 Answer

Cannot focus single focus side of monarck binoculars


First you must focus the left eye on a given object with the center focus wheel. Once the left eye is sharp while looking at the same object adjust the right eye to be as sharp as possible. The right eye diopter is only meant to adjust for the small differences between the eyes.
Thomas E. Kuenzli Eagle Optics (800) 289-1132

Dec 18, 2010 | Nikon Monarch ATB 7345 Binocular

1 Answer

My left eyepiece on my Zhumell 20X80 will not turn to allow me to focus it. The right one works just fine. I don't want to force the left eye piece. Is there a locking mechanism I'm not aware of? Is this...


Typically the left eye piece is not adjustable. You focus the left eye with the center adjustment and then focus the right eye with the eye piece adjuster. I hope this helps.

Dec 12, 2010 | Zhumell SuperGiant Astronomical Binocular

2 Answers

I bought the 10x25 camera binoculars and only one lens will focus using the center dial. Its almost like the other one needs to be focused at the eye piece itself. The pictures are not clear and are...


It is common for binoculars to have one independently focusable eyepiece.  If one eyepiece can be rotated, then that is the case.
If that is the case, focus through the one that DOES NOT rotate using the center control until you get a sharp image on that side.  Then rotate the eyepiece on the blurry side until the blurry side is sharp.  If you succeed at this, from henceforth the center control will focus both eyes adequately

Aug 11, 2010 | Sharper Image Optics

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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

Differnt focus for each eye?


All binoculars (except some really cheap rubbish) have a different focus for each eye. There are two types. Binoculars that have two individual eyepieces that turn and no center focus wheel. This is common to military, astronomy and binoculars used at sea.

The other is the usual center focus binoculars that have a wheel between the two barrels. They will also allow either the left or right eyepiece to turn to focus for one eye. The reason is that manufacturers take into account that each eye is slightly different.

Jul 04, 2009 | Optics

2 Answers

How to focus my Zeiss 10x40B TP binoculars


Your binoculars are known as the Zeiss Classic or what was once known as the Dialyt. They focus differently from the usual binoculars like those mentioned. The rear wheel is to focus both binocular barrels while using them. The front focus wheel is adjust the right eyepiece to suit your right eye. Binocular manufacturers take into account each eye is slightly different. To focus the Dialyt...First close your right eye and turn the rear wheel until the image is sharp in the left barrel. Leave the focus wheel alone. Now close left eye and adjust the front wheel until the image is sharp for your right eye. The image should now be clear and in focus for both eyes. It should not be needed to use the front wheel from now on. The rear wheel is what you will use to change the focus from near to far objects.

May 31, 2009 | Zeiss Classic B/GA 524013 Binocular

1 Answer

Focus knob problem


have repaired a few of these ...some whells have tiny set screws to tighten, some are a two piece wheel that loosens up sometimes, if not that then it is broken. if i can be of further help...15088331232

Apr 26, 2009 | Optics

1 Answer

The central wheel between the eye pieces is frozen


sounds like you dropped it awful hard. if center wheel wont turn you must have. hard to say without seeing it,but check to see if x-bars are broken. good luck...larry@reichinstruments.com

Jan 14, 2009 | Konica Minolta Activa Sport (8x25) WP...

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