Also known as EOS 600D and released in March 2011, this camera can be identified by its SKU (SKU:5169BO32). This camera is a Canon Digital SLR with 18 megapixels.

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How to get access to fix the optical view finder lens?

Hello,

My optical view finder lens has become dislodged (It moves when I jiggle the camera).

I'm not sure how it happened, but I reckon someone dropped the camera.

The rest of the camera works fine (all buttons, screen, autofocus, etc...), I just have to use the screen to take pictures, and it is not very practical (super slow focusing).

Even though I am comfortable with following this guide, I'd like to be sure it will give me access to the lens area, as opening up devices like these (even for professionals) involves some risks.

I can't quite tell what is accessible from the images.

Thanks for confirming this,

UPDATE: This is actually similar to the question @jlaurent asked here: Eyepiece is not working.

Answered! View the answer I have this problem too

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@dauffret What exactly is the part that moves?

Is it the viewfinder eyepiece, or something else (i.e. the image in the viewfinder is unsteady) ?

Can you hear anything rattling around when you shake the camera?

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Hi @flyingdutchman,

Everything on the outside of the camera is fine and in its place, what is moving seems to be one of the lenses inside the viewfinder.

The image is completely blurry, and i can see something move inside the lens when i rotate the camera (the image is slightly less blurry when the camera is upside down).

I can also see the rounded border of a lens inside the viewfinder (when looking at the viewfinder lens, not through it).

Shaking the camera does make something rattle inside.

thanks

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My guess is that the lens element that is right behind the eyepiece has come loose. This element moves back and forth when you turn the diopter adjustment wheel at the upper right side of the eyepiece.

Use the guide you linked in your question to get the top cover off. Once you've done this, you can use this guide to get an idea of the necessary procedure to disassemble the viewfinder. This guide is for the 550D, the preceding model, so the procedure might not be exact but it will probably be close enough.

I haven't found a proper service manual for the 600D, but there is a parts manual which has exploded views and might be useful. Get it here. You'll want to look at pages 5 an 10 specifically. The drawings are true vector line drawings so you can enlarge the !&&* out of them, which is way cool.

When dealing with the optics, wear latex gloves to avoid leaving fingerprints. Especially the focusing screen on the bottom of the viewfinder assembly is extremely delicate and must be treated with all due respect.

Once you have the eyepiece off, you'll most likely be face to face with the offending lens element. Given that there probably is not enough room for the lens to have flipped itself around its orientation will most likely be correct. It might just have popped out of its frame, but it might also be that the frame is broken. In the former case, a bit of patience might be sufficient to pop the lens back in place. In the latter case, you have a problem because you wouldn't want to use e.g. a cyanoacrylate glue on optics (cyanoacrylate tends to fog optics).

If you're going to take the plunge, take pictures if you can and let us know how you get by.

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@flyingdutchman, thanks a lot! I will get on this tomorrow, and I will post back here.

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@flyingdutchman, I have followed your advice. And all is well now, the camera is fixed. The problem was just a popped lens in the viewfinder. Using latex gloves I applied quite some force to the lens and it returned to its position.

I did follow the 550D guide for the view finder, and the insides are exactly the same, so that was a great help. I have edited the guides to correct some steps and add a couple of notes, which will hopefully help.

I found myself with 3 seized screws in the process, and had to remove them by use of drill.

I have to say the black screws on this camera are very soft, and prone to ruining with the slightest jump of the screw diver.

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@dauffret glad to hear you managed to fix your camera.

In Re: screws, I find that, in many cases, some screwdriver fits better than another even if they are both nominally the same size (e.g. PH00). Since screws in this type of equipment are often fixed with Loctite, I carefully select the screwdriver that has the best fit.

At least, the soft metal makes it easier to drill them out if you ruin the head, but I'd rather avoid ;)

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