[Swissboy]

When I check my 7 year old compact Trinovids, I notice they need some readjusting. I am not really aware of having banged them anywhere, but horizontal lines are no longer at the same level in the two barrels. However, if I fold these barrels the other way (something that can no longer be done with the Ultravids), the lines are just about right again. There is still a slight difference, but nowhere near what the proper folding shows. In fact, the binoculars can be used comfortably in this way. I now wonder why there is this difference. Is it that the two hinges are not exactly parallel and thus compensate to some degree? And if that is the case, I suspect there must also be some differences in well collimated binoculars depending on how far the barrels are folded out.

[elkcub]

Originally Posted by Swissboy

When I check my 7 year old compact Trinovids, I notice they need some readjusting. I am not really aware of having banged them anywhere, but horizontal lines are no longer at the same level in the two barrels. However, if I fold these barrels the other way (something that can no longer be done with the Ultravids), the lines are just about right again. There is still a slight difference, but nowhere near what the proper folding shows. In fact, the binoculars can be used comfortably in this way. I now wonder why there is this difference. Is it that the two hinges are not exactly parallel and thus compensate to some degree? And if that is the case, I suspect there must also be some differences in well collimated binoculars depending on how far the barrels are folded out.

Robert,

If it worked well before, my guess is that the problem has to do with lens component movement inside one or both barrels. Depending upon the nature of the movement, it could look better one way than the other, but I'd send them to Leica for re-collimation anyway. Time alone can have adverse effects on the cement or lens clamps. In my case, Swarovski has corrected similar issues.

Ed

[Swissboy]

Originally Posted by elkcub

Robert,

If it worked well before, my guess is that the problem has to do with lens component movement inside one or both barrels. Depending upon the nature of the movement, it could look better one way than the other, but I'd send them to Leica for re-collimation anyway. Time alone can have adverse effects on the cement or lens clamps. In my case, Swarovski has corrected similar issues.

Ed

Thanks, Ed, I did not think such a problem might happen without banging the binoculars somewhere. I'll have to check whether I still find my warrany card then.