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Photography

For the grown-up beside a child who loves photography.

There is no Whetstone tool or course for photography yet, so this page is the sideline card and your child's ladder.

The sideline card

Three numbers to notice

  1. The shutter speed, like 1/250: the fraction of a second the light gets in.
  2. Each full f-stop, f/2.8, f/4, f/5.6, f/8, lets in half as much light as the one before.
  3. ISO 200 needs half the light that ISO 100 does.

On the way home, ask: “Which photo would you take again, and what would you change?”

Ask because you are curious, and let any answer stand. Print this page for a half-page card.

Numbers checked against: Nikon: A Basic Look at the Basics of Exposure

Your child's ladder · on Spark & Anvil

The same idea at every age

  1. Ages 3–5Not made yet
  2. Ages 6–8The Rule of Thirds
  3. Ages 9–14One Stop, Twice the Light
  4. Ages 15–18Why f/4 Comes After f/2.8

Your child will meet this idea again at every age. The sideline card is the part for you.