Anyone shot on FULL Exposure Compensation to reduce ISO Setting?

jcoutts

jcoutts

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Name
Justin
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Hi

Just wondered if anybody used this to increase the exposure without having to go too high on ISO. :thinking:

My Canon has a lot of adjustment on this and I normally shoot 2 Clicks/Stops above the Neutral setting anyway as I read somewhere it was best to do this.

Was wondering if it would have a detremental affect if I were to raise it right up to the end, to avoid going too high with ISO to give a brighter exposure.

High ISO gives a lot of noise so I was wondering if I could compensate a little by having this turned right up. :shrug:

What do you guys reckon?
 
[S2]^^ as he says ^^[/S2]
 
Why would it?

Say I shot ISO 400 and got a dark shot, histogram showing all detail to the far left.

Wouldn't using Exposure compensation brighten the image, and/or shift the histogram to the right to give me a then usable shot? or am I getting this wrong?

That way I can keep the shutter speed up (Avoid shake) and ISO down to avoid some noise, and still get a good enough shot.
 
have you tested this? - i cant see that simply adjusting exposure compensation would compensate completely for low light and the requirement to bump the ISO? -surely you'd get noise induced by boosting the exposure compensation also??

would be interested in a comparison test and results image
 
How do you think exposure compensation works?

I understood that exposure compensation just adds extra adjustment to the non-fixed parameter.

ie shoot in aperture mode -> exposure comp ups the shutter duration.
shoot in time mode -> ups aperture.

so I dont see that it will help in low light since you are going to get a very slow shutter (and hence shake) or hit the limit on your aperture. I dont know if ec will also alter iso.

If I've been misunderstanding this all this time then someone please set me straight?
 
who? said:
How do you think exposure compensation works?

I understood that exposure compensation just adds extra adjustment to the non-fixed parameter.

ie shoot in aperture mode -> exposure comp ups the shutter duration.
shoot in time mode -> ups aperture.

so I dont see that it will help in low light since you are going to get a very slow shutter (and hence shake) or hit the limit on your aperture. I dont know if ec will also alter iso.

If I've been misunderstanding this all this time then someone please set me straight?
Click to expand...

You are correct, the OP's suggestion makes no sense.

Exposure compensation is designed to be used when you think that the camera will get the wrong exposure using it's meter or you want to over or under expose for effect.
 
who? said:
How do you think exposure compensation works?

I understood that exposure compensation just adds extra adjustment to the non-fixed parameter.

ie shoot in aperture mode -> exposure comp ups the shutter duration.
shoot in time mode -> ups aperture.

so I dont see that it will help in low light since you are going to get a very slow shutter (and hence shake) or hit the limit on your aperture. I dont know if ec will also alter iso.

If I've been misunderstanding this all this time then someone please set me straight?
Click to expand...

a1ex2001 said:
You are correct, the OP's suggestion makes no sense.

Exposure compensation is designed to be used when you think that the camera will get the wrong exposure using it's meter or you want to over or under expose for effect.
Click to expand...

:agree: Try using it in Manual mode and you'll see no difference in your pics.
 
Joe T said:
You can under-expose to reduce ISO - but then you will need to recover the shot later in PP. If you are worried about noise, then adding exposure compensation at PP stage will often bring out more noise.
Click to expand...

This is what i understood the OP to be asking, i didn't know it brought out more noise (but then i've never tried it).

I've learned something lets hope he has :thumbs:
 
i always thought of it as jsut lowering the shutter speed for a set aperture and visa versa. I use Exp compensation when i know the meter is going to be wrong. Strong light sources and no spot metering with my 400D. This is when i am in AV/PV. in manual i manually dial it in.
 
33L said:
i always thought of it as jsut lowering the shutter speed for a set aperture and visa versa. I use Exp compensation when i know the meter is going to be wrong. Strong light sources and no spot metering with my 400D. This is when i am in AV/PV. in manual i manually dial it in.
Click to expand...

With slide film, you learned that only exactly the correct amount of light hitting the emulsion would give a well exposed image. There's more latitude available with digital, which is great, but like a1ex says, you can't just wave a magic wand and add more light when its not there. ;)

There are so many variables to adjust with digital; it seems to make things more complicated sometimes.
 
Joe T said:
:) Everyone else in this thread seems to have ignored my post :lol:
Click to expand...

I didn't ignore it, I just read it as the OP was talking about Exposure Compensation in camera not exposure adjustment in post processing. If the OP was talking about post processing then your right, but nowehere does he mention it.
 
a1ex2001 said:
I didn't ignore it, I just read it as the OP was talking about Exposure Compensation in camera not exposure adjustment in post processing. If the OP was talking about post processing then your right, but nowehere does he mention it.
Click to expand...

As was I. If you under-expose in-camera - you can keep the same shutter/aperture but lower the ISO. BUT you then need to recover the under-exposure in PP. :)
 
Joe T said:
As was I. If you under-expose in-camera - you can keep the same shutter/aperture but lower the ISO. BUT you then need to recover the under-exposure in PP. :)
Click to expand...

I think were talking at cross purposes here :thinking: but in esence I think we agree that what the op is suggesting is not the best way forward and that he would be better off upping the iso and living with the noise.
 
I've shot 2 stop under to increase the shutter speed, then put the two stops back in DPP. That works quite well.
 
Thanks a lot guys ALL of your views and opinions and advice are very much appreciated and I have learned so much from being here.

Thats why I come here.

I think were talking at cross purposes here but in esence I think we agree that what the op is suggesting is not the best way forward and that he would be better off upping the iso and living with the noise.
Click to expand...

Got my answer! thats exactly what I wanted to know. How far can I cheat and it looks like I can't.

You can't just add in light that isn't there.. I understand that.

Thanks again.
 
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