What Is ISO Speed?
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People often ignore ISO because they don't fully understand what it does, but once you do, you'll be making use of this clever tool all the time - and not only in low light conditions.
ISO is a kid of bonus exposure control which can help you out of all sorts of tricky situations.
In this video we'll explain
- ISO introduction
- How ISO works
- ISO range and shooting in low light
- Grain and noise
- When to use ISO rather than flash
Instead of using flash for this indoor portrait I increased the ISO speed to make the camera more sensitive to light. Why would I not use flash?
Small on camera flashes have a nasty harsh look to the lighting which looks so stark and unflattering. Watch the video and you'll see what I mean. As far as I'm concerned ISO speed is king.
Don't miss our Using ISO speed films...