The big idea
Exposure · Season 01 · Episode 06
The exposure triangle
Shutter speed, aperture and ISO work as a team — change one and you balance the others.
Your brief: get a correctly exposed photo that freezes the skater AND blurs the background. Move the three dials until the light meter reads good and both effects are on.
-
You speed up the shutter to freeze motion, but the photo is now too dark. Which change brings the brightness back?
A wider aperture lets in more light to make up for the faster shutter. (Raising the ISO would also work — at the cost of some grain.)
-
Which control adds noise (grain) to a photo when you push it high?
Higher ISO boosts the sensor’s sensitivity to light, but the trade-off is visible noise or grain.
-
A wide aperture (a low f-number, like f/1.8) gives you…
Wide apertures create a shallow depth of field, softening the background behind your subject.
✓ Mastery check passed — nice work.
Your certificate
Finish the reel to earn your certificate
- ○ Complete the interactive activity
- ○ Pass the mastery check