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Message: <blockquote data-quote="CliveP" data-source="post: 3417540" data-attributes="member: 85835">Hi EdI'm happy for you and your "Science is the belief in the ignorance of the experts" – Richard Feynman I now know what it is like to attempt what I did. I don't know if you have done anything like this previously yourself but it seems as though you have not and so have no knowledge regarding practicing what you might have read?From looking through the result of my interesting and fun and occasionally frustrating experience over the last few days I think it's safe now to say that I definitely am not getting the eyestrain that I was, in fact none at all now. I still find to get the best from the bins I need to take some care with eye placement but I don't think this is unusual and given that I now have a nice relaxing clear circle with darkened edges evenly on each side and all around and a fully sharp accurately focusable view, I'm happy with what I did and with no help from anyone on here I am sad to say unless you count pointing out negatives which to be honest is the kind of impression I got/get and then of course there was some sort of bickering thrown in. No-one could or would actually simply say if you wanted to attempt to collimate your roofs then this is how to best to go about it. Perhaps I should make a video! I'm not going to though. I'm not taking it apart again lol.In fact if I had sent them off and paid a lot and they came back like this I would be similarly happy.So to any naysayers who might say this cannot be done or I wouldn't do it or attempt it or whatever I say to largely ignore this at least in the case for setting the bins for your own use. I cannot say whether they work for others with different ipd's or eye sockets but this is not an issue for me in this case or of great importance to me that others are able to get the best out of my personal bins. Everyone should have their own bins of whatever level but I'm sure mine are good enough in the worst scenario that some-one who needs to use them temporarily for a quick view can merely close one eye if they find it impossible to use both and two folks have already tried these and found no problem.So there is a choice. Anyone who would be satisfied with what I have done as I am should not be put off trying it themselves if they feel they wish to.Those who wish not to are free also to make that choice.I perhaps should also state that I am a qualified engineer B.ENG Hons although have not worked in sport optics, rather more with fibre optics and industrial engineering so I am not completely unconfident to have a go at such a thing and it is not the first binocular/monocular I have accosted so I wasn't completely without any knowledge or ability beforehand.If you are lucky enough to have lots of money to throw at Swarovski or Leica or whoever then I'm sure it's an easy choice to do so but perhaps I am catering for other folk -if there are any on the forum as the concern with alphas seems very much to predominate- but if there are and you are one of those and reading this and have an old bin or whatever and you wish to try this and feel confident enough to undertake the challenge (and if not so confident then take it slowly) then I say go ahead. Don't let anyone discourage you. At the least you will only destroy an old bin that didn't work anyhow (I have done this also). If you have the technical curiosity then you will have fun and undoubtedly learn by your mistakes and be better the next time and you just might end up with a good working bin that you can take some pride in having repaired/restored yourself and that's how I feel about this Pentax.Just thinking about the bins being collimated for different IPD's. It's actually quite easy to check and here's the amazing way to do it. Place your eyes up to the bins and look through them as normal and now here's the amazing bit, change the IPD in and out and if you still get one image (you won't see the whole image but you will notice if it splits or does anything strange) then what do you know, they must be pretty well properly collimated as is the case with my Pentax.So that's it. I've had enough of this thread. I'm off out shortly and I'm bringing a certain Pentax 8x20 to enjoy instead of posting it off for repair.</blockquote>

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