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I shaved my 5D's mirror
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PostPosted: Tue Aug 18, 2009 5:52 am    Post subject: Reply with quote

Bruce wrote:

So, Orio, do I shave the same as you have with your first 5d?


I can't answer, I have not shaved my 5DMkII
In theory it should work the same, but in practice, I don't know.

You really have guts to shave the 5DMkII while it's still under guarantee, I'm not so brave.


PostPosted: Tue Aug 18, 2009 2:55 pm    Post subject: Reply with quote

Hmmmmm, Maybe I shoot my Biotar, and others, with the mirror-up position for the time being. It may not be guts but stupidity to shave the mirror so quickly. Rolling Eyes

It does look a relatively easy procedure to do the shaving the way you did it. Idea


PostPosted: Tue Aug 18, 2009 4:34 pm    Post subject: Reply with quote

Bruce wrote:
Hmmmmm, Maybe I shoot my Biotar, and others, with the mirror-up position for the time being. It may not be guts but stupidity to shave the mirror so quickly. Rolling Eyes

It does look a relatively easy procedure to do the shaving the way you did it. Idea


You know it should depend on your primary subjects.
If you shoot mostly environmental portraits and such the vf is a must so shave away.

If more macro, landscapes and static subjects use the live view.

I know for me I shaved my 5D (v1) after a few months.
It was still under warranty but, I feel any warranty covered problems surface in the first few months. In other words..... I felt in the clear.

Portait and events are impossibly clumbsy with live view.


PostPosted: Tue Aug 18, 2009 5:26 pm    Post subject: Reply with quote

I thought it was a new post until i saw the OP Laughing

ok congrats and all , but why for have you done this ? ( silly question )


PostPosted: Tue Aug 18, 2009 7:14 pm    Post subject: Reply with quote

F16SUNSHINE wrote:

I know for me I shaved my 5D (v1) after a few months.
It was still under warranty but, I feel any warranty covered problems surface in the first few months. In other words..... I felt in the clear.


Yeps, I will be doing the same, wait out a few months for the unexpected, then when I "feel in the clear", I will sand away.


PostPosted: Thu Aug 20, 2009 11:19 pm    Post subject: Reply with quote

I don't have the gut to do it. Laughing


PostPosted: Sun Sep 27, 2009 10:08 am    Post subject: Reply with quote

Wow, shaving a 5D mkII? Fair play! Laughing


PostPosted: Sun Nov 22, 2009 2:28 pm    Post subject: Reply with quote

is there any way of shaving 5d mirror without canceling warranty?

For instance is it possible to buy additional mirror and shave it, and than just switch mirrors, an If something goes wrong with the camera you switch back?


PostPosted: Mon Nov 30, 2009 10:27 am    Post subject: Reply with quote

I started the 5D shaving process on Saturday afternoon - all went really well and things were looking really good until the secondary mirror collapsed Crying or Very sad

Followed all the guidelines and was working really carefully and slowly...

Camera still works - the half-photos are no fun though (the bottom part of every image is now black) Mad


PostPosted: Mon Nov 30, 2009 11:12 am    Post subject: Reply with quote

Ouch Mal, that's not fun! Mad

Things like this really make me want a FF camera from Pentax, because there will then be no mirror clearance problems anymore...


PostPosted: Mon Nov 30, 2009 11:25 am    Post subject: Reply with quote

Spotmatic wrote:
Ouch Mal, that's not fun! Mad

Things like this really make me want a FF camera from Pentax, because there will then be no mirror clearance problems anymore...


I hear you Wink

It's off to the repair-shop today and the guy has agreed to complete the mirror-shave when he's got the body apart which saves me the hassle. I've managed to get a 5D MkII loaner from the Canon distributor as I have some work-related shooting this week, so my panic is over Very Happy

Still confused as to how and why it happened though - if anything, I was over-careful when doing the job...


PostPosted: Mon Nov 30, 2009 11:28 am    Post subject: Reply with quote

ouch! I hope your mirror will be reglued promptly to back the whole frame


PostPosted: Mon Nov 30, 2009 1:46 pm    Post subject: Reply with quote

egidio wrote:
is there any way of shaving 5d mirror without canceling warranty?

For instance is it possible to buy additional mirror and shave it, and than just switch mirrors, an If something goes wrong with the camera you switch back?


No, not possible,

as reported by Mal1905 there is always a risk in shaving the mirror.
Mostly the submirror hinges are that problem. The hinges break if the pressure on the main mirror is to strong.
What Mal1905 did report sounds like exactly this.

I got the same problem after having a mirror hang with my Carl Zeiss HFT Planar 1.4/50mm. I did take of the lens during the mirror was hanging.
This causes the hinges for the submirror to crash inside the Body.

If you file down the mirror, he must absolutely fixed in one position. If not that could happen as described.

The hanging submirror, which not jumped up with the mirror, makes a part of the picture unexposured.

For two days i decided to shoot with a fixed Submirror (did use Tesa Film for fixing the submirror to the main mirror).

But somedays later i decided to bring the 5D to a Canon Servicepoint for repair. Costs me 200 Euro...

To file down only the mirror and change him, is not possible, because you have to file down a small amoung of the plastic, which is holding the mirror.

Cheers
Henry


PostPosted: Mon Nov 30, 2009 2:53 pm    Post subject: Reply with quote

Hi Henry,

The hinges didn't break - the sub-mirror is still attached to the main mirror.

The problem is that the sub-mirror no longer rises when the main one does - which is a bit odd seeing as how the spring for the sub-mirror is still there and is functional - giving me the same problem as you've just described below. I like the idea of fixing it to the main mirror!

Of course, to add insult to injury, when I went to the camera repair shop at lunchtime, I realised that I forgot to put the camera in my backpack!!!

AAAAAHHHHHHHH - another day without the camera - okay, got the Mk II on loan from this evening, but it's not mine Twisted Evil



hinnerker wrote:
as reported by Mal1905 there is always a risk in shaving the mirror.

Mostly the submirror hinges are that problem. The hinges break if the pressure on the main mirror is to strong.
What Mal1905 did report sounds like exactly this.

I got the same problem after having a mirror hang with my Carl Zeiss HFT Planar 1.4/50mm. I did take of the lens during the mirror was hanging.
This causes the hinges for the submirror to crash inside the Body.

If you file down the mirror, he must absolutely fixed in one position. If not that could happen as described.

The hanging submirror, which not jumped up with the mirror, makes a part of the picture unexposured.

For two days i decided to shoot with a fixed Submirror (did use Tesa Film for fixing the submirror to the main mirror).

But somedays later i decided to bring the 5D to a Canon Servicepoint for repair. Costs me 200 Euro...

To file down only the mirror and change him, is not possible, because you have to file down a small amoung of the plastic, which is holding the mirror.

Cheers
Henry


PostPosted: Mon Nov 30, 2009 3:22 pm    Post subject: Reply with quote

Mal1905 wrote:
Hi Henry,

The hinges didn't break - the sub-mirror is still attached to the main mirror.

The problem is that the sub-mirror no longer rises when the main one does - which is a bit odd seeing as how the spring for the sub-mirror is still there and is functional - giving me the same problem as you've just described below. I like the idea of fixing it to the main mirror!

Of course, to add insult to injury, when I went to the camera repair shop at lunchtime, I realised that I forgot to put the camera in my backpack!!!

AAAAAHHHHHHHH - another day without the camera - okay, got the Mk II on loan from this evening, but it's not mine Twisted Evil



hinnerker wrote:
as reported by Mal1905 there is always a risk in shaving the mirror.

Mostly the submirror hinges are that problem. The hinges break if the pressure on the main mirror is to strong.
What Mal1905 did report sounds like exactly this.

I got the same problem after having a mirror hang with my Carl Zeiss HFT Planar 1.4/50mm. I did take of the lens during the mirror was hanging.
This causes the hinges for the submirror to crash inside the Body.

If you file down the mirror, he must absolutely fixed in one position. If not that could happen as described.

The hanging submirror, which not jumped up with the mirror, makes a part of the picture unexposured.

For two days i decided to shoot with a fixed Submirror (did use Tesa Film for fixing the submirror to the main mirror).

But somedays later i decided to bring the 5D to a Canon Servicepoint for repair. Costs me 200 Euro...

To file down only the mirror and change him, is not possible, because you have to file down a small amoung of the plastic, which is holding the mirror.

Cheers
Henry


Hi Mal,

i know, the submirror of my cam was also still attached on their hinges on the main mirror. A little leading plastic which goes into the Body was broken.. thats what i did mean with hinges.. dont know the exact english expression for that little piece of plastik. Its located on right side of the mirror housing. Not the hinges of the submirrors itself.. the side guidance.. which brings up the submirror in relation to the main mirror movement.

There is a small nose in the right sidewall, which flips the submirror up.. this little plastic was broken..

To fix the submirror on the main mirror with tape, disables the complete autofocus-section so you can use the cam only in REAL - MF Mode with only the focus screen and without any confirmation.. Very Happy

Cheers


Last edited by hinnerker on Mon Nov 30, 2009 3:29 pm; edited 2 times in total


PostPosted: Mon Nov 30, 2009 3:28 pm    Post subject: Reply with quote

Thanks for clearing up my confusion Henry - I genuinely thought I was going mad!!! I looked into the mirror-box but nothing seemed to have broken or snapped, but what you say now makes total sense to me. I can picture the sidewall you mentioned, and from memory, can see how there had to have been something there to guide the sub-mirror as required.

Idea Now you've got me thinking about whether or not I'll get the repair done at all - I only ever use manual focus (even with my EF 24-70 L lens), and it's rarely on the camera these days (which is exactly why I sold off all my other EF glass...), so do I really need to drop 200.00 +/_ at this stage??? Idea

Again, my thanks for this invaluable tip Wink

hinnerker wrote:
Hi Mal,

i know, the submirror was also still attached in their hinges on the main mirror. A little leading plastic which goes into the Body was broken.. thats what i did mean with hinges.. dont know the exact english expression for that little piece of plastik. Its located on right side of the mirror housing. Not the hinges of the submirrors itself.. the side guidance.. which brings up the submirror in relation to the main mirror movement.

There is a small nose in the right sidewall, which flips the submirror up.. this little plastic was broken..

To fix the submirror on the main mirror with tape, disables the complete autofocus-section so you can use the cam only in REAL - MF Mode with only the focus screnn an without confirmation.. Very Happy

Cheers


PostPosted: Mon Nov 30, 2009 4:10 pm    Post subject: Reply with quote

I did find an image of the problem some month ago..

there is a little fork on the right side as Rainer Hhnle told, a guy from another forum, who is specialist in repairing Canon cams.., the fork is the side guidance... but it could also be the axis of the guidance fork.
The same happens with some old 300D cams often.



To repair this, you have to open the whole body.. !!

Thats, why its so expensive to repair.

Cheers
Henry


PostPosted: Mon Nov 30, 2009 4:38 pm    Post subject: Reply with quote

Thanks yet again Henry - I'm now much happier and may have even saved some money too - my wife may be getting a Christmas present after all Very Happy

Will finish off the mirror-shave tonight and tape up the sub-mirror.

And, of course, will report back on any significant findings along the way!

hinnerker wrote:
I did find an image of the problem some month ago..


PostPosted: Mon Nov 30, 2009 5:15 pm    Post subject: Reply with quote

thanks for the heads up Mal and Henry. From your experience whats the best way to shave? Im thinking of buying an expensive mini-dremel to grind my mirror away with a super cutter stone, one small pass at a time.


PostPosted: Mon Nov 30, 2009 5:40 pm    Post subject: Reply with quote

Bruce, mini-dremel did work for me, I bought it for this purpose. Try different cutter stones and rpm, to avoid vibrations from the dremel.
Good luck! Wink


PostPosted: Mon Nov 30, 2009 7:04 pm    Post subject: Reply with quote

I'm using a miniature file and sandpaper (emery board), and things seem to be going okay - taking it very slowly is the key thing to remember Wink

Bruce wrote:
thanks for the heads up Mal and Henry. From your experience whats the best way to shave? Im thinking of buying an expensive mini-dremel to grind my mirror away with a super cutter stone, one small pass at a time.


PostPosted: Mon Nov 30, 2009 7:20 pm    Post subject: Reply with quote

Mal1905 wrote:
I'm using a miniature file and sandpaper (emery board), and things seem to be going okay - taking it very slowly is the key thing to remember Wink

Bruce wrote:
thanks for the heads up Mal and Henry. From your experience whats the best way to shave? Im thinking of buying an expensive mini-dremel to grind my mirror away with a super cutter stone, one small pass at a time.


guys, you need only one thing -- nail-file Smile and do shaving as traverse grinding (?) ... Smile

tf


PostPosted: Mon Nov 30, 2009 7:31 pm    Post subject: Reply with quote

trifox wrote:
Mal1905 wrote:
I'm using a miniature file and sandpaper (emery board), and things seem to be going okay - taking it very slowly is the key thing to remember Wink

Bruce wrote:
thanks for the heads up Mal and Henry. From your experience whats the best way to shave? Im thinking of buying an expensive mini-dremel to grind my mirror away with a super cutter stone, one small pass at a time.


guys, you need only one thing -- nail-file Smile and do shaving as traverse grinding (?) ... Smile

tf


Hi Trifox,

thats correct +1

After repairing the mirror box of my 5D, i ask the repair guy to give me the broken old mirror system in my hands for researching the way, which is best for mirror shaving.

I must say, the best way was to file down with.... a nail-file.. It make less trouble on the edges of the mirror. Only decent scratches on them..
dont know how to describe it in english.. normally you have sharp edges, but if you file down, some small pieces of the the mirror chip of..

But during my tests i realized, that the mirror lost contact to the plastic holder.. in terms of warming/heating up the mirror glas.

So pay attention. That could happen with the mirrorglas.
Some months ago, Canon ordered back some of the 5Ds because the used glue for the mirrors of the 5D was not so good. Some Cams did have the problem and my Cam seemed to be one of them, which will be meet this point, sooner or later..

So be carefull, not to "overheat" the glass during file down the mirror.
So it would be intelligent to think some minutes about cooling down the mirror by something acting as a heat sink.

Cheers
Henry


PostPosted: Mon Nov 30, 2009 7:55 pm    Post subject: Reply with quote

Ok, here are some images from the old mirror, after repairing the mirror box.
The images shows, what could also happen...

First the mirror, submirror unit .. the whole in the mirror comes from the crash with the HFT Planar 1.4/50mm in QBM Mount.. that was the big bang...




This happend after a bit of "filework"...



As you can see, there are 4 points, on which the mirror was glued to the
plastic holder..

If this would happen to you, you can try to reglue the mirror on this 4 points.. with super glue.

Cheers
Henry


PostPosted: Sat Dec 05, 2009 9:36 pm    Post subject: Reply with quote

ok, so shaving brand new 5d mark2 would probably be a bad idea.

What's the workflow using live view with mirror-problematic lenses? Is it possible that you accidently exit live view mode while shooting? You have to unscrew lens after every shooting or after every shot? How is it while shooting video with such lenses? Does mirror close after you stop recording video.

Is the live view workflow easy and safe enough or its better to wait for a while and than shave mirror

thanks