photography: 4 - iso (film speed)

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A quick guide to film speeds and grain

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Page 1: Photography: 4 - ISO (Film Speed)

International Standards Organisation(formally: ASA – American Standards Association)

Page 2: Photography: 4 - ISO (Film Speed)

ISO (or Film Speed) in traditional photography refers to how sensitive film is to light

Page 3: Photography: 4 - ISO (Film Speed)

Open www.camerasim.com

Take a photo using 100 ISO then take one at 6400 ISO

Because 6400 ISO is more sensitive to light the image will be over exposed

Try at different ISO settings – remember you’re not even touching aperture or shutter speeds

Page 4: Photography: 4 - ISO (Film Speed)

ISO is the easiest of the camera settings to learn – just set it and forget it:

If it’s a bright sunny day – use 100 ISO:

If it’s dark and dingy – use 1600 or 3200 ISO

If you’re not sure use 400 ISO

Page 5: Photography: 4 - ISO (Film Speed)

As you will be taking photos inside a building – where it will be dark – you should set your ISO to 1600+ before you start shooting

Page 6: Photography: 4 - ISO (Film Speed)

As you increase the ISO setting you also increase the amount of noise (or grain) your photo will have:

Page 7: Photography: 4 - ISO (Film Speed)
Page 8: Photography: 4 - ISO (Film Speed)
Page 9: Photography: 4 - ISO (Film Speed)

Before you start set your camera to 1600 ISO

Start in Shutter Priority mode and set to at least 1/60th

If necessary, wedge your camera against a wall when taking photos

Try to avoid using flash