Question 1

What is f-stop?

Accepted Answer

F-stop (f-number) describes the aperture size. Lower numbers (f/1.4) mean larger apertures and more light; higher numbers (f/16) mean smaller apertures.

Question 2

How does changing f-stop affect photos?

Accepted Answer

Each full f-stop change (e.g., f/2.8 to f/4) halves the light. Lower f-stops give shallower depth of field (blurry backgrounds); higher f-stops give sharper overall focus.

Question 3

What EV values are typical?

Accepted Answer

Sunny day: EV 15, overcast: EV 12, indoor lighting: EV 7-8, candlelight: EV 1-2, night photography: EV -2 to -6.

Question 4

How do I use the exposure triangle?

Accepted Answer

Aperture, shutter speed, and ISO form the exposure triangle. Changing one requires adjusting another to maintain exposure. EV helps simplify these calculations.

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