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Thread started 11 Sep 2013 (Wednesday) 19:48
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6D live view with manual lens question

 
rparchen
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Sep 11, 2013 19:48 |  #1

I use my 6D a lot and love it but I've run across a weird quirk which I could use some help with. When I use Aperture Priority mode everything works great. When I manually stop my lens down the live view screen will get dark for a quick second and then lighten up to what the exposure would be. Exposure compensation works as it should to brighten, etc. But it doesn't work this way when I switch to manual given the same settings (shutter speed and aperture) even though the metering works. The screen will be dark but the metering will show -1, 0, etc and looks fine when I take a picture. It's like the exposure simulation isn't working in manual for some reason as the screen stays dark. Is there a setting that I'm missing? Thanks for the help!


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tat3406
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Sep 11, 2013 22:56 |  #2

I always shoot M mode but no have this problem. Have you try to change the shutter speed or ISO to see the different?


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tkbslc
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Sep 11, 2013 23:05 |  #3

In AV mode the camera is automatically adjusting the shutter speed to compensate for the change in aperture. That's what Av mode does. So it's working as you'd expect. Needle always stays in the middle because the camera is adjusting shutter speed to keep it there.

In manual the camera doesn't compensate for your changes so the needle moves.


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rrblint
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Sep 11, 2013 23:20 |  #4

tkbslc wrote in post #16289888 (external link)
In AV mode the camera is automatically adjusting the shutter speed to compensate for the change in aperture. That's what Av mode does. So it's working as you'd expect. Needle always stays in the middle because the camera is adjusting shutter speed to keep it there.

In manual the camera doesn't compensate for your changes so the needle moves.

^^^^+1

Exposure sim is working exactly as it is supposed to.


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rparchen
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Sep 12, 2013 08:28 |  #5

I do understand that Av is changing the shutter speed to match. I guess what I'm saying is that the live view doesn't match what is recorded when using manual mode. I can use the same exact settings for two shots (the output file has the same exposure) but the live view is almost black when using manual versus "normal" when using Av. Hopefully that makes more sense.


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DBNissan
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Sep 12, 2013 08:43 |  #6

Possibly the aperture is stopped down to your setting in manual thus blocking visible lighth to the LV. In AV mode, the aperture is wide open until you take the shot. Then the 6D closes the aperture down to your setting


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rparchen
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Sep 12, 2013 09:39 |  #7

DBNissan wrote in post #16290551 (external link)
Possibly the aperture is stopped down to your setting in manual thus blocking visible lighth to the LV. In AV mode, the aperture is wide open until you take the shot. Then the 6D closes the aperture down to your setting

That was my initial thought as well but I'm using fully manual lenses so my aperture is already stopped down, even when using Av.


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6D live view with manual lens question
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