Working in stops
When it comes to balancing the exposure settings of aperture, shutter speed and ISO, you need to think in stops. It’s an easy concept to grasp: each time you double or halve the exposure, you change the exposure by a stop.
To maintain a consistent exposure, you need to decrease one of the exposure settings if you increase one of the others.
Understanding the scale
The exposure scale shows the current exposure of 1/50sec at f/8, ISO 3200. That’s fine if we’re metering an area 1 stop darker than mid-tone, but what if we’re metering a mid-tone? Then it will be 1 stop underexposed. There are three ways to correct this and nudge the indicator back to the middle…
1 Open the aperture by 1 stop
Pros: You can maintain the same shutter speed.
Cons: The reduced depth of field can reduce the apparent sharpness in an image.
2 Slow the shutter speed by 1 stop
Pros: The aperture stays the same, sharpening the image.
Cons: Could blur the shot if it’s too slow to freeze the subject or reduce camera shake.
3 Increase the ISO by 1 stop
Pros: Lets you choose the ideal combination of aperture and shutter speed settings.
Cons: Image quality will deteriorate beyond ISO 3200.
PAGE 1: Common questions about shooting in manual mode
PAGE 2: How to set manual exposure
PAGE 3: Why metering matters in manual mode
PAGE 4: Working in stops
PAGE 5: The real advantage of using manual mode
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10 common exposure problems every photographer faces (and how to fix them)
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