Week 14 Use of Flash (Litrato Busko): Point, shoot, and have fun.

Brief introduction on the use of flash.
(This is for grade school and junior high school interest club or youth group use only.)

1. Litrato Busko
Point, shoot, and have fun!

2. Week 14: Proper Exposure
Use of flash

4. A flash is a device used in photography producing a
flash of artificial light to help illuminate a scene.
A major purpose of a flash is to illuminate a dark
scene.
Other uses are capturing quickly moving objects or
changing the quality of light.

6. Digital camera flash modes
Automatic mode — Flash triggers automatically
when the camera determines more light is
needed in a scene.
Turn off this mode in places that forbid inside flash photography such as museums.

9. Digital camera flash modes
Forced (fill-in) flash — Keeps the flash on in situations
where automatic mode would keep it off. Used when
additional illumination is needed, such as when the
main source of light is in the back of a subject or
shadows prevent details from showing. Can be
effectively used outside when subjects are within the
flash range.

11. Digital camera flash modes
Red-eye reduction — Fires the flash several times just
prior to exposing a photo. Reduces the reflection in a
subject’s eyes that causes red-eye. The rapid flashes
cause a subject’s pupils to contract and helps minimize
the red-eye effect.
Inform subjects before using this mode as the pre-flashes can cause
people to look startled.

12. At night, or in any dark place, the pupil will enlarge to allow more light into the eyes. When the
light from the camera flash goes off in a dark room (or any room with dim lighting), the pupils do
not have the time to contract fast enough to adjust to the bright flash of light. Therefore, a large
burst of light reaches the retina, reflects back, and that light is captured by the camera.

13. Red-eye reduction functions emit short flashes of light in
quick succession before the camera actually takes the picture.
The burst of light beforehand makes the subject's pupils
constrict, and there's not enough time between flashes for
them to re-dilate, thereby reducing the red-eye effect in
photos.Red-eye reduction functions emit short flashes of light
in quick succession before the camera actually takes the
picture. The burst of light beforehand makes the subject's
pupils constrict, and there's not enough time between flashes
for them to re-dilate, thereby reducing the red-eye effect in
photos.

14. Digital camera flash modes
Suppressed flash — Turns the flash off.

15. Digital camera flash modes
Slow sync (also called night scene) — Use to capture a
dimly lit background at night. The flash fires briefly to
light the foreground subject.

16. Auto Flash Slow Sync

17. Digital camera flash modes
Rear-curtain sync — Similar to slow synch but flash
doesn’t fire until right before the shutter closes.

19. Digital camera flash modes
Flash exposure compensation — Used to increase or
decrease the output of the flash; not all digital cameras
have this feature.

20. Any comments or questions?