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01/08/2006 11:45:50 PM · #1 |
| Hi, I got a question. When we set compensation on a digital camera, is it recorded only in the JPG output, or does it actually makes a difference to the RAW file? |
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01/09/2006 12:16:46 AM · #2 |
It makes a differnce in the RAW file, because it will cause the camera to change the actual exposure. For instance, if you're in Av mode @ f/8 and the camera reads "proper" exposure to be 1/100s, but you have a +1EV compensation dialed in, the exposure used will be 1/50.
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01/09/2006 12:46:42 AM · #3 |
Originally posted by kirbic:
It makes a differnce in the RAW file, because it will cause the camera to change the actual exposure. For instance, if you're in Av mode @ f/8 and the camera reads "proper" exposure to be 1/100s, but you have a +1EV compensation dialed in, the exposure used will be 1/50. |
Oh so it actually change the Shutter speed (or maybe aperture) when I tweaked the EV? Thanks, that's what I needed to know. So in theory if I shoot in Manual mode with custom aperture and shutter speed, I dont really have a need to tweak the EV, right? I was curious, and was thinking it was just software brightening or something. LOL silly me. Thanks again. |
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03/27/2006 07:31:04 PM · #4 |
| bump on this, as I have almost the same question. If shooting in manual mode, when would one ever need to adjust the exposure compensation? It seems like you can accomplish the same thing by changing the aperture or shutter speed, right? |
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03/27/2006 07:55:20 PM · #5 |
Originally posted by PSUlion01:
bump on this, as I have almost the same question. If shooting in manual mode, when would one ever need to adjust the exposure compensation? It seems like you can accomplish the same thing by changing the aperture or shutter speed, right? |
I have since learnt that the exposure compensation is almost an "automatic" mode where usually the shutter speed will change as we adjust the EV settings. Some cameras may change the aperture instead.
So in manual mode, there will usually be no EV settings to adjust since you are already adjusting the aperture/shutter manually. |
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03/27/2006 08:17:28 PM · #6 |
At least in my cameras, in manual mode EV compensation will adjust the meter's "zero EV" indication. However it isn't really useful to use the EV compensation in manual since one can easily compensate by adjusting the exposure off zero to the desired EV value.
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03/27/2006 08:19:43 PM · #7 |
When you're using EV compensation you get a little bar in your viewfinder with vertical strikes on it; say, EV-2 to EV+2. If you use EV compensation in Aperture Priority mode (Av mode) your shutter speed will change as you compensate. Uste it in Shutter Priority (Tv) mode, your aperture will change.
When you shoot in full manual mode you get a little bar in your viewfinder, witht he same vertical strikemarks there. As you change the relationship of aperture to shutter speed, the pointer will move in one direction or another.
They are precisely analogous.
The only difference is that in full manual mode you need to check your exposure with each shot, as the exposure itself is locked in. In one of the automatic modes, it's the relationship of exposure-to-metering that is locked in. The actual exposure may change, but it is the same amount of over-or-under the metered exposure in every case.
I find the EV compensation to be a dangerous tool. You forget you have it on, don't remember to neutralize it, and over or under expose the next set of shots without realizing it.
For this reason I prefer full manual exposure, where you can always see the actual relationship as you adjust, except in fast-action situations where you cannot adjust quickly enough.
Robt.
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03/29/2006 03:39:04 AM · #8 |
| I cant adjust the EV setting in manual mode on mine. Just SCN,AV and TV modes. |
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03/29/2006 03:59:45 AM · #9 |
Originally posted by BowerR64:
I cant adjust the EV setting in manual mode on mine. Just SCN,AV and TV modes. |
Yea, it shouldn't be possible in Manual, strange about those saying it does.
On the 350D in manual mode the EV ajust button becomes the Aperture ajust button. |
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03/29/2006 04:17:49 AM · #10 |
Originally posted by bluenova:
Yea, it shouldn't be possible in Manual, strange about those saying it does. |
Dont think anyone said it does.
But that's not the point.
Like what Bear said, its dangerous if you somehow forgot to remove it as it also works for Ap and Sp modes. |
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03/29/2006 05:55:46 AM · #11 |
EV compensation adjusts how the meter interprets the scene ... and thus the suggested exposure values it gives. For that reason EV compensation does not make sense in manual mode. However, as Bear pointed out, when in manual the bar showing the meter reading of the scene is still available -- but any compensations made to the EV must be made with the aperture, shutter speed and ISO controls.
By making the EV display available in manual mode the photographer is able to easily think and see any adjustments made in terms of stops of exposure instead of aperture, shutter speed and ISO settings. This convenience has been expanded with the inclusion of the A, S and P modes.
I don't find it hard to remember the EV has been compensated in A or S anymore than I find it hard to remember what shutter speed I have set in manual. After setting the mode to match the most important setting (ie, A if DOF is important), I set the exposure by adjusting the EV compensation while watching the EV bar in the viewfinder -- exactly as I do while adjusting aperture and shutter speed while in manual.
As long as the resulting exposure is what you want, there is no way of achieving it that is more right than any other way. All methods of getting the 'correct' exposure have there advantages and disadvantages that make them more suited for some types of shots, while at the same time making them unacceptable for shots of a different nature. Just use whatever methods suit your style of shooting.
David
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