topic Re: Cannon rebel t7 focus screen in EOS DSLR & Mirrorless Cameras

EOS Rebel T7 Need to replace focus screen

Mwilliams1360 — Thu, 08 May 2025 12:20:51 GMT

Cannon rebel t7 [Serial number removed to protect privacy]

cannon ds126741

To whom it concerns I have this camera and need to replace the focus screen. Do you have the model number or link. I see several but I do not see where they are comparable. Thank you for your help

Re: Cannon rebel t7 focus screen

Waddizzle — Sun, 15 May 2022 22:53:21 GMT

The focusing screen ine Rebel series are not user replaceable.

This begs the question of why. Why do you think it needs to be replaced?

Re: Cannon rebel t7 focus screen

Mwilliams1360 — Mon, 23 May 2022 11:04:11 GMT

Maybe I have the name of it wrong. The screen with the lines and arrows has a scratch on it. And it shows up in a lot of pictures.

Re: Cannon rebel t7 focus screen

kvbarkley — Mon, 23 May 2022 12:04:24 GMT

If it shows up in your pictures, it is on your sensor, not the focusing screen. If you are lucky it is a hair and you can get a rocket blower to try and clean it off.

Can you post a sample image?

Re: Cannon rebel t7 focus screen

ebiggs1 — Mon, 23 May 2022 13:53:05 GMT

Most, all, things in side the mirror box or viewfinder are not replaceable on a T7. Unless cleaning fixes it, you are pretty much going to be looking for another camera. Rocket blower is the least expensive but a professional cleaning would be better.

Re: Cannon rebel t7 focus screen

jrhoffman75 — Mon, 23 May 2022 14:30:23 GMT

As stated you need to post some examples. I am not sure what in the camera has lines and arrows on it.

Re: Cannon rebel t7 focus screen

shyla87 — Sun, 11 Dec 2022 20:25:20 GMT

Then apparently you do not know cameras that well jrhoffman75....they are talking about the focus screen. some have arrows and some have dots.

Re: Cannon rebel t7 focus screen

shyla87 — Sun, 11 Dec 2022 20:26:24 GMT

Actually, mine is also my focus screen that has a scratch on it. and mine shows up on my photos as well. I can clearly see the scratch on the focus screen as well as someone who has helped me fix my focus screen.

Re: Cannon rebel t7 focus screen

Waddizzle — Sun, 11 Dec 2022 22:36:09 GMT

The focusing screen is not part of the light path to the image sensor.

The mirror is #2. The focus screen is #5. [The image sensor is #4.] [The UV Filter layer is #3.] At the top of the image is the pentaprism #7 and the viewfinder diopter #8. The mirror swings up when the shutter is fired. All light passing through the lens goes toward they image sensor.

Are you using Live View? If so, then your image sensor may be dirty.

Re: Cannon rebel t7 focus screen

Waddizzle — Sun, 11 Dec 2022 22:40:52 GMT

@shyla87 wrote:
Actually, mine is also my focus screen that has a scratch on it. and mine shows up on my photos as well. I can clearly see the scratch on the focus screen as well as someone who has helped me fix my focus screen.

If you “can clearly see the scratch”, then you may not be looking at the focusing screen. If it shows up in photos, then that can only be the image sensor.

Re: Cannon rebel t7 focus screen

jrhoffman75 — Sun, 11 Dec 2022 22:46:47 GMT

@shyla87 wrote:
Actually, mine is also my focus screen that has a scratch on it. and mine shows up on my photos as well. I can clearly see the scratch on the focus screen as well as someone who has helped me fix my focus screen.

As shown in Waddizzle's post, it is physically impossible for a scratch on the focusing screen to show up in your images. The focusing screen is blocked by the mirror when recording an image.

If, as Waddizzle asks, if you are in Live View and viewing the image on the LCD then you have a hair, thread or scratch on your sensor.

The sensor does not have lines, dots or arrows on it.

The LCD does not have lines, dots or arrows on it, but the camera can display various icons on the LCD when in Live View.

Re: Cannon rebel t7 focus screen

JSPhotoRI — Wed, 07 May 2025 21:27:05 GMT

This is incorrect. The focusing screen is in fact replaceable. For my Canon Rebel T7, it uses the "Canon CY3-1833 Focusing Screen" and it is in fact user replaceable. I know this is an old thread, but figured I would chime in as your response is not accurate for all the Rebel series.

Re: Cannon rebel t7 focus screen

shyla87 — Sat, 17 May 2025 14:25:47 GMT

Thank you! The one that my dad's friend was trying to replace mine with did not work. I'm going to see if I can find this one.

Re: Cannon rebel t7 focus screen

Waddizzle — Sun, 18 May 2025 17:32:44 GMT

“ This is incorrect. The focusing screen is in fact replaceable. For my Canon Rebel T7, it uses the "Canon CY3-1833 Focusing Screen" and it is in fact user replaceable.”

The focusing screen is not part of the light path to the image sensor. You have entirely missed the point in more ways than one.

First. If you can see a scratch in the viewfinder that also shows up on images, then the focusing screen is not the issue. The problem is the lens because it’s the only common denominator.

If you are using Live View, then the issue is either the sensor or the lens. Small debris or scratches inside the lens are generally too unfocused to be seen clearly.

Second. Just because a spare part is available for sale doesn’t automatically mean that the part is “user replaceable.” The phrase “user replaceable” only applies when no tools are required to effect the repair.

For example, the camera battery is user replaceable. The screen might be “you replaceable,” but most people cannot.

The user replaceable screens from Canon include a handling tool. Your replacement does not.

Re: Cannon rebel t7 focus screen

ebiggs1 — Mon, 19 May 2025 14:29:34 GMT

" ... it is in fact user replaceable. I know this is an old thread, but figured I would chime in as your response is not accurate for all the Rebel series."

Yes it is an old thread but my fellow responders are correct. Any part on any camera is replaceable. Some are meant to be user replaceable but the focus screen is a part that most would not deem as user replaceable.

I have done it several times and I have also done it on my 1 Series cameras which is far easier than a Rebel. I am not sure but I think all Rebels are the same not simply the T7.

Re: Cannon rebel t7 focus screen

Stephen — Mon, 19 May 2025 14:47:30 GMT

User-replaceable components, like the battery, are those that users can easily swap out with minimal effort and no tools required. On the other hand, non-user-replaceable components require specialized tools or technical expertise to replace.

You're welcome to do whatever you want to your equipment! Head to https://canon.us/repair for all your repair options, including information on parts availability. If Canon USA still repairs your Canon gear, we'll happily restore it to factory specifications.

Re: Cannon rebel t7 focus screen

ebiggs1 — Mon, 19 May 2025 15:46:45 GMT

"User-replaceable components, ..."

It does fall on one's own definition of the term. IMHO, to the average person would not deem this as a user-replaceable part. Most I am sure don't even know what it is or that it even exists. All the ones I ever did came with a special tweezer to complete the task.

Re: Cannon rebel t7 focus screen

shyla87 — Tue, 20 May 2025 01:08:19 GMT

No, you have missed it completely. I just took my camera to someone local with the information that JSPhotoRI gave me and the camera repair person said on my camera it is exactly the part that needed replaced and is doing it for me. So kindly stop acting like you know everything, as I now believe you do not know anything. My camera repair man also said you don't know everything and that you are not entirely correct yourself.

Re: Cannon rebel t7 focus screen

ebiggs1 — Tue, 20 May 2025 14:26:20 GMT

"My camera repair man also said you don't know everything and that you are not entirely correct yourself."

Well, I certainly have been a critic of Mr. Waddizzle but I can assure you on this he is way more correct than not. If your repair tech said differently then you need to find a different guy because he knows little about cameras.

Re: Cannon rebel t7 focus screen

LeeP — Tue, 20 May 2025 14:55:13 GMT

I too would like to know where these lines and arrows are.