Photography Exposure Triangle Mastery 5

Question 1

What does 'stopping down' a lens mean?

Accepted Answer

Using a smaller aperture opening (higher f-number)

Answer

Stopping down means closing the aperture to a smaller opening (e.g., f/2.8 to f/8), reducing the light entering the lens.

Question 2

Why might a photographer choose ISO 800 over ISO 100 even in adequate light?

Accepted Answer

To allow a faster shutter speed for freezing action

Answer

Raising ISO allows a faster shutter speed to be used for the same aperture, which is valuable when freezing motion is the priority.

Question 3

You're shooting a dark indoor event and can't add flash. You've already opened to f/1.8 and raised ISO to 3200. What is your ONLY remaining option to brighten the image?

Accepted Answer

Decrease shutter speed

Answer

With aperture maxed out and ISO at its practical limit, only slowing the shutter speed admits more light — though it risks motion blur.

Question 4

The 'sunny 16 rule' states that in direct sunlight, a correct exposure is achieved at f/16 with which shutter speed?

Accepted Answer

1/ISO (e.g., 1/100s at ISO 100)

Answer

The sunny 16 rule: at f/16 in direct sunlight, set shutter speed to 1/ISO (so 1/200s at ISO 200) for correct exposure.

Question 5

Which statement about aperture and diffraction is correct?

Accepted Answer

Very small apertures (f/16–f/22) can cause diffraction softening

Answer

At very small apertures, light diffracts around the aperture blades, causing a slight loss of sharpness known as diffraction softening.

Photography Practice Test

Photography Practice Test

Photography Exposure Triangle Mastery 5