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Old Tuesday 22nd August 2017, 11:15   #151
Richken
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Quote:
Originally Posted by Binastro View Post
Richard.
Try it when you are rested for two or three days, before deciding whether the problem is temporary or not.
You still have the warranty and a calm appraisal is needed.
It may be they did indeed work on it at Canon, maybe not.

Another thing. Have you tried brand new batteries? Sometimes they go peculiar due to partly used batteries.

I wondered if you could slip some paper between the focus knob and housing to see if there is a piece of grit. But it could have broken up if that is what it was.

Did you use it on a beach where sand could have got in?

Dear Binastro

Many thanks for your helpful reply. I've just tried the paper idea and it does seem to have cleared the focus roughness issue unless it was a fluke! I have not used them on the beach but I have used them on the esplanade and there is sand just beyond but I've not been aware of wind blown sand. I've changed the batteries with two new sets and the IS is still only partially working.

The IS not functioning correctly is a big concern obviously especially given that these binoculars are so young and have always been carefully used and stored and the reviews that I've read say how robustly built they are. Apart from one mention they seem to be very reliable as regards to the IS system.

When I packaged them up to go back to Canon for attention to the focusing the IS function was working fine so either they have upset them or the IS system is quite easily damaged. I used the same good packaging that Clifton Cameras sent them to me some months ago so they should have been fine.

The servo motor sound I mentioned in my earlier post has not happened again and I wonder if the poor IS operation could be the result of only one of the two servos working? I read somewhere that there are two of these servos responsible for the IS function but I've not been able to find any drawings of the internals of these binoculars so am a bit in the dark!

Cheers

Richard

PS it would be good to be able to do a direct comparison with a pair of these binoculars to see what the difference is rather than just relying on my memory but unfortunately I do not know anyone on the Isle of Wight with a pair.
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Old Tuesday 22nd August 2017, 12:12   #152
Richken
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Originally Posted by etudiant View Post
I'd second Binastro's suggestion to check the batteries.
My 10x42, powered by rechargeables, began exhibiting similar symptoms. The IS was restored to better functionality by using lithium throwaways. These have slightly higher voltage, which seems to agree better with the IS electronics.

Unfortunately that recovery only lasted for a little while and eventually the IS module had to be repaired/replaced. Canon service did a good job and the glass is again working properly, but I'm sticking with lithium throwaways now.
Dear Etudiant

Many thanks for chipping in. I really do appreciate you guy's knowlegable suggestions.

I think is was you who suggested using these lithium batteries some months ago and I bought several sets straight away. The first set is still in use with a spare set kept in the case!

I'm very relieved to read that you have had a good service experience from Canon.

Cheers

Richard
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Old Tuesday 22nd August 2017, 18:55   #153
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Oh dear I spoke too soon! Checked again and the focus has now gone back to what it was when sent to canon and received back and the paper trick does nothing now so I'm rather stumped except to say that this level of instability is not looking good.

Cheers

Richard
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Old Tuesday 22nd August 2017, 21:22   #154
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Dear Etudiant


I'm very relieved to read that you have had a good service experience from Canon.

Cheers

Richard
Hi Richard,

My service was done in the US and did take a couple of iterations before everything was properly sorted.
Cost was a bit over $500, high enough that I would have just bought a new one instead had the price then been down to $1050 as it is now.
My impression is that Canon binoculars are a bit a 'rara avis' in the Canon product line, so service is less routine than for the normal lenses and camera bodies.
I assume you've tried soaking the glass in a bucket of cold water. That is the Canon recommendation for cleaning off salt deposits from ocean visits. Perhaps it might help with a grit issue as well.
Lastly, have you checked the status of your batteries? Lithiums stay strong until the very end, but then they drop quite sharply.

Good luck and keep us posted please.

Last edited by etudiant : Tuesday 22nd August 2017 at 23:03.
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Old Wednesday 23rd August 2017, 10:17   #155
Richken
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Dear Etudiant

Many thanks for your reply. I've swapped out the batteries with my spare set of lithium batteries and a set of Duracell batteries and no improvement to the operation of the IS.

I'm a bit reluctant to plunge the binoculars into water as they have not had sea spray on them though of course being anywhere close to the coast is a danger, and the problem with the focus makes me think that this is an internal rather then being an external issue as over the last couple of days it has changed from being jerky and stiff to the silky smoothness it was for the first few months, even though the binoculars have been sitting on the living room table since returning from the visit to the bird hide on Sunday afternoon.

EDIT. I've just thrown caution to the winds and have run some dental floss around the focus spindle and followed it up with some warm water and then dried it all off with filtered low pressure compressed air and the problem has gone away for the moment, so everything is crossed that this has solved this annoying problem. You can be sure that I will keep the forum posted.

SECOND EDIT THIRTY MINUTES LATER. The unsmooth focus problem has re-appeared so my remedial actions were just short term which is strange! I've also tried running my fingers over the focus knob to mimic use but it does not alter things. At the moment I'm at a loss to understand what is going on but sense that the problem is internal. I will wait a little while before contacting the suppliers in case anyone can come up with further suggestions.

Cheers

Richard

Last edited by Richken : Wednesday 23rd August 2017 at 11:17.
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Old Wednesday 23rd August 2017, 20:31   #156
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It looks like it is time to send it back to Canon so they can have another go at it. I think only Canon can fix the IS issues introduced from the first attempt and I doubt there is any advice we can offer at this point to fix the focus roughness. For what it is worth, I do not have any roughness or sticking in my 10X42 L IS focus.

Sorry to be negative, but Canon does not have a good track record in repairing these units, at least from what I have gathered reading various posts on this forum. I am not sure if anyone has reported Canon getting it right the first time. I do recall at least one post where it was never repaired back to original condition. This is for both U.S. and non U.S. members. I suspect the repair people work on a variety of products and do not have the expertise of the people who do the assembly. The binocular is a very complex piece of equipment. I wonder if the world wide repair centers have the special tools and equipment that is most likely used to assemble these binoculars.

https://www.youtube.com/watch?v=T9zNtA4j3Eo

I believe it is still under warranty so give them another chance at a repair. Let them know if it is not right after the second attempt, you would like them to replace it with a new unit. That way they can send the original unit back to Japan and get it fixed for sale as a refurb. Good luck. Sorry you are having these problems as it is a great binocular when all is working properly.
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Old Wednesday 23rd August 2017, 20:41   #157
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It looks like it is time to send it back to Canon so they can have another go at it. I think only Canon can fix the IS issues introduced from the first attempt and I doubt there is any advice we can offer at this point to fix the focus roughness. For what it is worth, I do not have any roughness or sticking in my 10X42 L IS focus.

Sorry to be negative, but Canon does not have a good track record in repairing these units, at least from what I have gathered reading various posts on this forum. I am not sure if anyone has reported Canon getting it right the first time. I do recall at least one post where it was never repaired back to original condition. This is for both U.S. and non U.S. members. I suspect the repair people work on a variety of products and do not have the expertise of the people who do the assembly. The binocular is a very complex piece of equipment. I wonder if the world wide repair centers have the special tools and equipment that is most likely used to assemble these binoculars.

https://www.youtube.com/watch?v=T9zNtA4j3Eo

I believe it is still under warranty so give them another chance at a repair. Let them know if it is not right after the second attempt, you would like them to replace it with a new unit. That way they can send the original unit back to Japan and get it fixed for sale as a refurb. Good luck. Sorry you are having these problems as it is a great binocular when all is working properly.
Sound advice imho.
It took me several tries before my 10x42 was back in good repair, even though the IS was my only issue.
The impression I did get was that the technicians work against a check list, so hard to quantify flaws such as a sticky focuser get short shrift.
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Old Thursday 24th August 2017, 09:33   #158
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Thanks guys for our thoughts. Thanks for the link, which I found whilst trying to find out as much as possible about these binoculars yesterday. Yes some complex stuff going on to bring us great results...... when all is operating correctly!

I will make contact later today with Clifton Cameras here in the UK who supplied my binoculars and express my very considerable concerns about the IS not working properly and the constantly changing focus operation. I will keep the forum informed as to how this gets resolved.

Thanks to everyone who has helped me.

Cheers Richard
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Old Thursday 24th August 2017, 13:00   #159
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Screw loose?

Perhaps because this morning I popped outside with the binoculars as I was alerted to the iconic sound of a Spitfire overhead and as I was focusing on it the focus jammed solid as if there was something like a screw caught up in the mechanism. It freed up when I applied some pressure but that really was NOT good and may give a clue as to why the focusing is sometimes lovely and smooth and at other times notchy and stiff. Anyhow my letter has gone off to the suppliers by email and I'm now waiting for some response. Cheers Richard
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Old Sunday 27th August 2017, 10:34   #160
Richken
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Sound advice imho.
It took me several tries before my 10x42 was back in good repair, even though the IS was my only issue.
The impression I did get was that the technicians work against a check list, so hard to quantify flaws such as a sticky focuser get short shrift.
Dear Etudiant

A reasonably cloud free sky last night here so I had a look through the binoculars to really evaluate how bad the IS was on my 10x42 IS binoculars and the stars were dancing all over the place with the IS on which confirms my normal birding conclusions. Previously before they went back to Canon just to sort out the focusing stiffness the IS held the stars steady as pin points of light.

Cheers

Richard
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