08-14-2026
06:16 PM
- last edited on
08-17-2026
08:38 AM
by
James_C
Recently bought a used 6d mark II from BH photo. These lines I can see consistently through the viewfinder. Even if I mess with viewfinder settings on the camera, they are always there. Am I missing something? Did this camera have a custom viewfinder installed? Lines appear to be permanent? I took a picture of what I'm seeing through the viewfinder with my phone. My old 6d mark ii did not have these lines.
PXL_20260814_220632475.jpg
08-14-2026 08:22 PM
Hi @alyssal since this camera is new to you reset both the main and custom functions back to factory default.
08-14-2026 08:53 PM
Greetings,
Perform a full settings reset, Main and Custom Functions.
If you haven't downloaded a copy of your user manual, do that next.
https://gdlp01.c-wss.com/gds/9/0300027469/05/eos6d-mk2-im4-en.pdf
Read your manual, 😉. It is the single best way of learning about your camera.
Then, see this for further explanation about the grid lines.
How to Enable the Grid in the Viewfinder on the EOS 6D Mark II https://share.google/Wirhsp5dxK8W69KdL
~Rick
Bay Area - CA
~R5 C (1.1.3.1), ~RF Trinity, ~RF 100 Macro, ~RF 100~400, ~RF 100~500, ~RF 200-800, ~RF 1.4x TC, BG-R10, 430EX III-RT ~DxO PhotoLab Elite ~DaVinci Resolve Studio ~ImageClass MF644Cdw MF656Cdw ~Pixel 10 ~CarePaks Are Worth It
08-14-2026 09:37 PM
I did perform a factory reset myself - the lines are still there. They are present in the viewfinder even with the camera off. Is there an aftermarket product on the viewfinder that does this? I've never seen lines in any viewfinder like this before.
08-14-2026 09:38 PM
Yep, did that, no change. Lines are still present even if camera is on or off. The lines do not "flicker" per say, they are there permanently if that make sense?
08-14-2026 09:52 PM
Hi @alyssal turn the mode dial to A+ and see what happens. The camera uses an LCD overlay in the viewfinder instead of a regular focusing screen.
08-14-2026 10:37 PM
08-14-2026 10:41 PM
08-14-2026 11:12 PM
The camera uses an LCD overlay in the viewfinder it may have failed. I would ensure that the grid display is turned off in the menu as @shadowsports said. He provided an electronic copy of the manual for your camera. If it still doesn’t work I would return it to B&H Photo NYC.
08-14-2026 11:28 PM
Yes, all viewfinder gridlines are turned off or disabled. So the lines I'm seeing on the mirror when I take the lens off and look inside is from a failed LCD display? Sorry if I'm interpreting this incorrectly. So the LCD displays onto the mirror, but this one appears to be stuck on displaying lines permanently? Does the mirror appear abnormally dirty for just coming from BH photo today? I just feel like it wasn't even cleaned or tested....
Thanks for helping.
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