Shutter speed and F-stop · 2017. 12. 30. · ‐Fast shutter speed freeze actions completely...
Transcript of Shutter speed and F-stop · 2017. 12. 30. · ‐Fast shutter speed freeze actions completely...
Shutter speed and F‐stop
What your Mama never told you
Shutter speed
What is shutter speed?
What is Shutter Speed‐ Shutter speed also known as exposure time‐ Length of time that light enters lens and gets exposed onto light sensor‐ Fast shutter speed freeze actions completely ‐ Slow shutter speed creates an effect called "motion blur"
How does Shutter Speed work‐ Shutter speed is measured in fractions of seconds, when they are under seconds‐ Examples of fractions of seconds is 1/250, 1/60, 1/16‐ Slower shutter speed start at 1 sec and on most cameras will go as slow as 30 asec without going into bulb setting or where a remote trigger is necessary to atake longer exposures
F Stop 16 ‐ ISO 400
Setting Shutter Speed‐Most cameras have “Shutter Speed” that is TV or S‐ Dial your Shutter Speed‐ Change the shutter speed to the desired speed ‐ Note: In Shutter Priority mode the camera select s the Aperture setting automatically (will discuss this later)
How does shutter speed work‐ Shutter speed is measured in fractions of seconds, when they are under seconds‐ Examples of fractions of seconds is 1/250, 1/60, 1/16‐ Slower shutter speed start at 1 sec and on most cameras will go as slow as 30 asec without going into bulb setting or where a remote trigger is necessary to atake longer exposures
More examples of Shutter Speed
Aperture Priority
What is Aperture Priority?
What is Aperture Priority‐ Aperture is the amount of light that travels through the lens opening‐ Aperture Priority is also known as F‐Stop or just Stop in some cases‐ It will blur subject in front or behind you focal point at small F‐Stops, thus aletting more light in‐ On the other hand it can also bring all subjects into focus at wide or big F‐Stop aopening
How does Aperture Priority work‐ Aperture is hole within the lens through which light travels into the camera‐ Examples of F‐Stops F1.4, F 2.8, F5.6, F8, F16 and F32‐ Small F‐Stop has a big opening letting a lot of light through‐ Big F‐Stop lets little light in(think of a bucket filled with water. With a big hole at the bottom, the water will flow out very quickly. With a small hole in the bottom, the water will take much longer)
Setting Aperture Priority‐Most cameras have “Aperture Priority” that is AV or A‐ Dial your Aperture Priority‐ Change the Aperture Priority to the desired size‐ Note: In Shutter Priority mode the camera select s the Shutter Speed setting automatically (will discuss this later)
How does Aperture Priority work‐ The opening on the lens will differ, thus letting more or less light throu‐ A smaller F‐Stop means large Aperture, while a large F‐Stop means a smaller Aperture.‐ Small F‐Stop will have a very narrow focal point where a big F‐Stop will have a alarge focal pointLook at the following picture:
More examples of Aperture Priority
Cheat Sheets