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I have Nikon D5600. I have tried several times in Manual mode to change the exposure value by pressing the exposure button (given in the top control) and rotating the dial. I can see that the exposure value changes (plus or minus) but once I click the photo, the brightness of the photos remain same (although if you check the details, the exposure value is equal to the value that I set).

On the other hand, if I change the exposure value by pressing the info i button and then change the value using touch screen then, the brightness of the photos changes as per the set values.

Why brightness/exposure remains same (even the values show in data differ) if you change exposure settings using +/- dedicated button?

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    Unless the 5600 is very different to the 5500, Exposure Compensation doesn't work in Manual Mode; it adjusts Aperture instead; though I think that might be a setting... which I can't track down in the manual right now :/ If it does 'work' then it is for metering only. – Tetsujin Jun 8 '18 at 11:54
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    Do you have ISO set to 'Auto' while using 'Manual' exposure mode? – Michael C Jun 8 '18 at 12:16
  • @Tetsujin: I also thought that the exposure cannot be changed in Manual mode but then, why do it changes if I change it by pressing i and using touchscreen? Secondly, if its not changing during manual mode then, why the details of a photo shows different Exposure values? I will post some sample pictures in few hours to bring more clarity. – skm Jun 8 '18 at 12:51
  • @MichaelClark: No, the ISO is also in Manual and I can change its value using the dial+Fn. – skm Jun 8 '18 at 12:51
  • I'm not seeing what you're seeing. If I set to manual, the wheel is shutter speed, hold Fn it's ISO, hold +/- it's aperture. If I point at a known light source & set exposure correctly to the meter, then shift exp comp in i & re-check the same light source, the meter shows differently... but the compensation itself must be done manually to re-centre the meter. – Tetsujin Jun 8 '18 at 13:18
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I don't know that Nikon, but usually in manual mode the exposure meter is "display only", showing the exposure you get with the current parameters.

For the exposure to actually be an input, you would need to be on one of the "less manual" settings, where the camera is responsible for computing some of the values. For canons that would be Av/Tv, where you set the aperture and the camera finds the exposition time to achieve that exposure; or you set the exposition time and the camera sets the aperture.

  • I also thought that the exposure cannot be changed in Manual mode but then, why do it changes if I change it by pressing i and using touchscreen? Secondly, if its not changing during manual mode then, why the details of a photo shows the set Exposure values (without actually showing any change in the brightness)? – skm Jun 8 '18 at 12:53

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