15x50 Fuzzy Image...Improved (1 Viewer)

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doug el10x32

Well-known member

• Feb 10, 2011

• #41

Hi Ron,

While waiting for someone to let me know how to do it and on a completely different topic, is there still a 'Radio Hilversum' ? There was also 'Radio Luxembourg'. We used to listen to these radio stations in England on homemade crystal radios in the 50's and then transistor radios early in the 60's until the pirate radio stations hit the airwaves. I still remember the day the music changed for a day on both stations when the assination of Kennedy was announced !!!

Doug......

 

Last edited: Feb 10, 2011

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dipped

Well-known member

• Feb 10, 2011

• #42

doug el10x32 said:

Hi Ron,

How do I send a PDF file ?? !!

Doug......

Click to expand...

Can you not just attach it in an advanced reply up to 1.93mb size? It's downloaded on your computer right?

 

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doug el10x32

Well-known member

• Feb 10, 2011

• #43

Hi,

Try this....

Doug......

 

Attachments

• Canon 15x50 IS Parts Catalogue.pdf

  378.4 KB · Views: 728

Kevin Purcell

Well-known member

• Feb 11, 2011

• #44

Where did you get that, Doug?

Is there one for the other models?

 

KorHaan

Well-known member

• Feb 11, 2011

• #45

Hey Doug, great! Thanks!

OMG look at all that meticulous artwork; real craftsmanship.
The tripod fitting is indeed secured by 4 screws. But into what material, I wonder.

To answer your question when we were in the waiting room:
yes, Radio Hilversum still exists, now on 5 channels called Radio 1 ... 5.
Mostly news items, talk radio and light music. In the early nineteen-seventies I would listen to the pirate radio stations Radio Caroline, Radio Noordzee and Radio Veronica,
for groovy music and hip talks. Veronica is now a full-fledged television channel. Hilversum BTW is the television and radio town of the Netherlands.

Best regards,

Ronald

 

Last edited: Feb 11, 2011

KorHaan

Well-known member

• Feb 11, 2011

• #46

Maybe we can petition Canon to make a film "How our IS's are made" much in the same way Steiner has done....

Ronald

 

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etudiant

Registered User

Supporter

• Feb 11, 2011

• #47

Ronald,
Canon recently posted some videos of how their new 500mm camera lens are built, so that is a pretty good idea.
The link to the videos is here:
http://www.digitalphotographywriter.com/2011/01/how-camera-lenses-are-made-canon-500mm.html

 

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dipped

Well-known member

• Feb 11, 2011

• #48

Doug I don't suppose you have a parts diagram for a Kowa 824! It fell over and dislodged the prism and cracked the housing.

 

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doug el10x32

Well-known member

• Feb 11, 2011

• #49

Hi Dipped,

Sorry but no.

Doug.......

 

NDhunter

Experienced observer

• Mar 8, 2011

• #50

Sancho said:

It´s indicative of one of the major weaknesses of Canon IS binos, though. They´re "technical", and complicated. I had pretty lousy experiences with a pair of 12x36 that got knocked out of collimation, sent back 3 times for repair and although the collimation was repaired, the IS-system (which hadn´t been damaged), was replaced and never worked properly again. It just makes me a little suspicious - perhaps we need our binos to be "bomb-proof", or at least serviceable. I don´t like having to "baby" bins.

Click to expand...

This is just a reminder for those on the Canon IS, bandwagon. Sancho,
knows his optics, and also some experiences when good things go bad.

Jerry

 

E

exup

Well-known member

• Mar 27, 2022

• #51

doug el10x32 said:

Hi,

Try this....

Doug......

Click to expand...

Hello Doug,

I am a new member who has been lurking in the background for a while.

I have recently acquired a new 18x50, with focus wheel backlash. I agreed a large discount on price when I found this known problem and have thus decided to keep them.

I have disassembly pictures from Cloudynights and together with your parts catalog, I have enough info to pull them apart and repair, if the backlash gets any worse.

The only unknown is collimating ........ if required.

Thanks,

Gary

 

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Binastro

Well-known member

• Mar 27, 2022

• #52

If it is a new binocular then Canon should repair it under warranty.

I wouldn't try to recollimate it myself.

I have no problems with my 18x50 after more than twenty years of use.

B.

 

E

exup

Well-known member

• Mar 27, 2022

• #53

Binastro said:

If it is a new binocular then Canon should repair it under warranty.

I wouldn't try to recollimate it myself.

I have no problems with my 18x50 after more than twenty years of use.

B.

Click to expand...

Hello Binastro,

Recently bought new off eBay UK, with no retail receipt, so don't believe Canon would honour a warranty claim.
I then found the focus wheel backlash (~10 degrees) common problem (latest Taiwan versions) and instead of sending them back to the seller, I agreed a discount.......and have taken the 'risk'. The backlash is not too annoying and for £690/$900+ saving, I can live with it.

That is why I was keen to study the focus mechanism, to see what the problem could be. IF (big if) it stays as is, then all is good and worst case I believe I could disassemble and locate & fix the problem. Failing that, I could approach Canon for a paid repair .....

What is not clear is how these are collimated, if they lost collimation after a rebuild by me.

Regards,

Gary

 

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Binastro

Well-known member

• Mar 27, 2022

• #54

Gary,

Canon used to have fixed price repairs, maybe around £500.

But I am not sure if they still do this.

Canon U.K. work a few years ago was very good, but there have been less good reports from others.

It might be worth while knowing how to do repairs on the Canon 18x50.
But if the Taiwan 18x50s have this problem, personally I'd wait till it gets worse.

Unless, of course, you are experienced working on binoculars.
Some binoculars need special tools.

That is quite a big discount.
Rather strange, I think.

Regards,
B.

 

E

exup

Well-known member

• Mar 27, 2022

• #55

Binastro said:

But if the Taiwan 18x50s have this problem, personally I'd wait till it gets worse.

Click to expand...

Yes, that is the plan........

If they stay as are, then I have no intention of pulling apart.

However, Cloudynights does have a post from a few years ago showing that it is not actually too complex, with only a few screws to gain access.

I suspect the actual backlash is a tolerance problem in the mechanism. These bins seem to push a bar forward and backwards and thus move the objectives/intermediate lens assembly in the forward nose.

Currently there seem to be many reports of the new versions doing this, including other sizes (I think 12x36). Most are addressed by returning to the shop or a Canon warranty claim.

Fingers crossed 🤞 all will be well.....

Thanks,

Gary