One of the eyepiece rings on my Pentax 10x50 DCF SP binoculars is off the track. While this has not caused a problem for the optics, we paid a lot for these and would not want the problem to deteriorate further. We are very reticent to use any force to reposition it. Not sure how this happened as they weren't dropped. . . .

SOURCE: diopter adjustment

Call tech support! That's why these people get paid. Sites like this wouldn't need to exist if they did their jobs correctly!

SOURCE: right lens on Pentax 10x42 DCF HR 11will not focus at all

pentax # 18008770155....gl larry reich

SOURCE: need to realign the optics for Binoculars

You can't. It needs to be done professionally.

I imagine that you are now finding that whatever you do, you cannot get both eyepieces to focus. Most likely, the carrier yoke for the eyepieces has bent or broken: it's by far the biggest single cause of binocular failure.

If it's bent then straightening it is rarely accurate and usually results in the yoke breaking or leaves it severely weakened and ready to break. If it's broken, the physical loads across such a tiny contact area making gluing impractical. Even in the rare cases where it can be done all that it results in is a yoke which is back in one piece but which is now bent.

In most cases, the cost of repair exceeds the cost of replacing with new, but your binoculars are fairly expensive so that's most unlikely to be the case. But if you want them to work again like a £500+ pair of binoculars then you need to send them for professional repair. If you do it any other way then you may as well throw them away and buy a £15 pair of Bresser Meade 10x50's from LIDL (excellent binos for the price and comparable to many £100 models, but not in the same league as yours when fully functional).