A quick guide to film speeds and grain

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

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

3.  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

4.  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

5.  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

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

9.  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

10.  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