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I am still learning the intricacies of camera settings on my Sony RX100M3.
One point I still get confused on is light, specifically ISO and exposure value. If ISO is the shutters sensitivity to light, and exposure value is set based on certain situations (like lower value when facing the sun), how do the two work hand in hand when composing a shot?
Think of ISO like "gain". Aperture and Shutter speed are the most important when it comes to light, then ISO increases your sensor's sensitivity to light.
Think of exposure value like your override for the camera.
So if you were taking a picture of a hillside, and the camera at 0 EV (Exposure Value) said "I think the exposure should be Aperture f8 with shutter speed of 1/500).
You might take that picture and see that it's overexposed. You could adjust the EV to say -0.7, which is telling the camera "Nope, I appreciate your suggestion, but I want the picture to be underexposed by some amount from what you think it should be. The camera might then choose an aperture of f8 and shutter speed of 1/1000 (which would be underexpose or make the picture darker from the previous setting).
That makes some sense. I noticed in Shutter Priority mode that when I set it for higher speed light gets dimmer. So would I adjust EV down a bit and leave ISO at auto?
That makes some sense. I noticed in Shutter Priority mode that when I set it for higher speed light gets dimmer. So would I adjust EV down a bit and leave ISO at auto?
A higher shutter speed means less light, because the exposure is quicker. If you're trying to shoot at a higher shutter speed for whatever reason and want more "light" you could boost the ISO.
Generally speaking lower ISO is better due to less noise, more dynamic range, more contrast, etc.. High ISO is usually a last resort when you just need to get the picture in lower light conditions, or need to boost your shutter speed.
It would help to see some examples with the settings of the shots used (aperture, shutter speed, iso, etc..)
A higher shutter speed means less light, because the exposure is quicker. If you're trying to shoot at a higher shutter speed for whatever reason and want more "light" you could boost the ISO.
Generally speaking lower ISO is better due to less noise, more dynamic range, more contrast, etc.. High ISO is usually a last resort when you just need to get the picture in lower light conditions, or need to boost your shutter speed.
It would help to see some examples with the settings of the shots used (aperture, shutter speed, iso, etc..)
A for instance - snow.
I have read to increase the exposure to whiten grey, as most cameras tend to fake themselves out when shooting snow pictures.
If ISO also has an effect on light, why wouldn't I turn up the ISO value instead?
I have read to increase the exposure to whiten grey, as most cameras tend to fake themselves out when shooting snow pictures.
If ISO also has an effect on light, why wouldn't I turn up the ISO value instead?
The reason you would not boost the ISO is because doing so increases the "noise" in the photograph. Which one generally tends to avoid
So to boost the exposure to make the snow white rather than grey, one decreases the shutter speed or increases the aperture or a combination. Only when cannot do either - say a concert in dark place where you already have the max aperture, and the shutter cannot go any lower without introducing hand-shake, do you start boosting ISO.
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