ISO refers to a camera sensor's sensitivity to light, with higher ISO numbers indicating greater sensitivity. The document recommends setting a camera to ISO 1600 or higher when taking photos indoors, where it will be darker, to ensure proper exposure without needing to use a flash. It also notes that higher ISO settings can introduce more noise or grain into the resulting photos. The photographer is advised to set their camera to ISO 1600, use shutter priority mode with a shutter speed of at least 1/60th, brace the camera against a wall if needed, and avoid using a flash.

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