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40D Focusing Screen DIY - Pics inside

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Thread started 05 Dec 2007 (Wednesday) 16:19   
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Mark_Cohran
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AperturePriority wrote in post #4494159external link
Thanks for the tutorial!

How much dust fell into the body cavity during this procedure? Did any stubborn ones end up on the sensor/filter screen?

How would you measure it? :)

Seriously, it doesn't take much longer to change out the screen than it does to change a lens. Besides, the mirror and the shutter are still covering the sensor during the whoe procedure.

Post #31, Dec 17, 2007 21:32:19


Mark
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AperturePriority
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Mark_Cohran wrote in post #4524881external link
How would you measure it? :)

Seriously, it doesn't take much longer to change out the screen than it does to change a lens. Besides, the mirror and the shutter are still covering the sensor during the whoe procedure.

You mean you don't have a "dustometer? :p

Even thought the mirror and shutter would protect the sensor filter at that point in time, any dust that gets inside the body cavity could eventually wind up on the sensor filter with all the flapping and moving parts that happen when capturing an image.

I guess one should treat the focus screen operation just like a lens change--be in a conducive environment and take precautions.


.

Post #32, Dec 17, 2007 22:52:22


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gjl711
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AperturePriority wrote in post #4494159external link
Thanks for the tutorial!

How much dust fell into the body cavity during this procedure? Did any stubborn ones end up on the sensor/filter screen?

Plus, any dust that does settle in is going to be the kind that the blower blows right out of there.

Post #33, Dec 17, 2007 23:04:43


Not sure why, but call me JJ.
I wondered why the baseball was getting bigger, then it hit me
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Mark_Cohran
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AperturePriority wrote in post #4525316external link
You mean you don't have a "dustometer? :p

Even thought the mirror and shutter would protect the sensor filter at that point in time, any dust that gets inside the body cavity could eventually wind up on the sensor filter with all the flapping and moving parts that happen when capturing an image.

I guess one should treat the focus screen operation just like a lens change--be in a conducive environment and take precautions.

Or, you could just change lenses (or screens) and not worry about it too much. :)

Post #34, Dec 17, 2007 23:19:04


Mark
-----
Some primes, some zooms, some Ls, some bodies and they all play nice together.
Thirty-five years of shooting and still learning.
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71sbeetle
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or just clean it, I found this is the easiest way:
http://farm3.static.fl​ickr.com ...86019164_f6d11790a1​_o.jpgexternal link

Post #35, Dec 18, 2007 01:20:16 as a reply to Mark_Cohran's post 2 hours earlier.


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Raven
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71sbeetle wrote in post #4525841external link
or just clean it, I found this is the easiest way:
http://farm3.static.fl​ickr.com ...86019164_f6d11790a1​_o.jpgexternal link

Wouldn't distilled water be preferable? :-)

Post #36, Dec 18, 2007 01:58:25


_______________
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gjl711
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Raven wrote in post #4525931external link
Wouldn't distilled water be preferable? :-)

Na, not necessary. The little screen inside the faucet catches all the big stuff anyway.:lol:

Post #37, Dec 18, 2007 07:54:12


Not sure why, but call me JJ.
I wondered why the baseball was getting bigger, then it hit me
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Familiaphoto
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I use carbinated water. I figure the bubbles help loosen the tough stuff. :D

Post #38, Dec 18, 2007 09:44:28


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Sfordphoto
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considering getting one myself

i uploaded a picture that i made in photoshop, prob just a rough guestimate of what it looks like through the VF

IMAGE NOT FOUND IMAGE IS A REDIRECT OR MISSING!
http://lh6.ggpht.com ...L7uE/EF-D%20gridlines.jpgexternal link
HTTP response: 404 | MIME changed to 'image/png' | Byte size: ZERO

Post #39, Sep 09, 2008 21:17:13


Gear

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Domino81
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Good job!

Post #40, Sep 09, 2008 23:17:31


Anthony D. Christianoexternal link
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vibin247
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The Katz Eye looks nice, but that's really too expensive unless you're used to using split image. I'm liking my Ef-S screen, and have since I first installed it on the first day I received the 40D. Maybe in the future I'll get the Ef-D, but I'm thinking that's more suited for a full frame body like a 5D.

Post #41, Sep 09, 2008 23:23:34 as a reply to post 4449126


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Edgar ­ in ­ ATL
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71SBeetle, thank you for sharing your quick and easy cleaning technique. If the 50D is sealed better like they say, draining is going to be a big issue. Maybe that's another reason to sit out this round.

Post #42, Sep 10, 2008 08:57:59 as a reply to vibin247's post 9 hours earlier.


Canon 70D Owner

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Sfordphoto
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vibin247 wrote in post #6276625external link
The Katz Eye looks nice, but that's really too expensive unless you're used to using split image. I'm liking my Ef-S screen, and have since I first installed it on the first day I received the 40D. Maybe in the future I'll get the Ef-D, but I'm thinking that's more suited for a full frame body like a 5D.

Haha, i was actually thinking the reverse...waiting to get the precision matte screen for when I got a FF cam...but I got the EF-S for my 40D today, and I'm liking it

Post #43, Sep 11, 2008 18:59:09


Gear

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mizouse
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ohh wow, that is simple.

Post #44, Sep 11, 2008 19:20:09


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RandyMays
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Thanks ! I will be doing this in the near future. Very Nice.:)

Post #45, Sep 11, 2008 19:30:36


Canon 40D, 5D MK II
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Canon 70-200 f/2.8L (Non IS), Canon Extender EF 1.4 X II,
Canon 400 f/5.6 L, Canon 100 f/2.8 Macro,
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40D Focusing Screen DIY - Pics inside
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