1. While you are photographing a dog, it begins to move away. What must you do to keep it in focus?
(a) Increase the f-stop value.
(b) Decrease the f-stop value.
(c) Move the lens away from the sensor or film.
(d) Move the lens closer to the sensor or film.
(e) None of the above.
2. A converging lens, like the type used in a magnifying glass,
(a) Always produces a magnified image (image taller than the object).
(b) Can also produce an image smaller than the object.
(c) Always produces an upright image.
(d) Can also produce an inverted image (upside down).
(e) None of these statements are true.