Mastering your DSLR L/O: understanding the anatomy of a camera Understanding the exposure triangle
Anatomy of the camera 02/01/2019 LDV 17
The exposure triangle 02/01/2019 LDV 17
The exposure triangle 1. Shutter speed - how long sensor is exposed to light (it can open at different speed) 2. Aperture - how much light is let through the lens (opens or closes) 3. Iso - how sensitive the sensor is to light 02/01/2019 LDV 17
Shutter speed 02/01/2019 LDV 17
Shutter speed The shutter is the mechanical curtain in front of the sensor which allows light to hit the sensor for a certain amount of time The speed ranges usually from 1/1000 to 1 second The longer the shutter is open to more light is let through Each increment doubles the amount of light 02/01/2019 LDV 17
Shutter speed Fast shutter speeds such as 1/1000 allow moving objects to appear sharp Slow shutter speeds create motion blur Anything under 1/250 will not freeze action Shutter speed needs to be balanced with aperture and iso to create proper exposure 02/01/2019 LDV 17
02/01/2019 LDV 17
02/01/2019 LDV 17
02/01/2019 LDV 17
Shutter speed 02/01/2019 LDV 17
Your turn Switch the DSLR mode to shutter priority mode (TV). Take five different photos of a moving object changing the shutter speed each time. Come back to rm 15 and lets have a look at the results! 02/01/2019 LDV 17
Aperture 02/01/2019 LDV 17
Aperture Aperture is a mechanical diaphragm that opens wider to let in more light or vice versa F stops measure how much light is let in The higher the f stop the less light is let in and vice versa Common f stops - 1.0; 1.4; 2; 2.8; 4; 5.6; 8; 11; 16; 22 02/01/2019 LDV 17
Aperture Aperture adapts depth of field Wider the aperture the shallower the depth of field The smaller the aperture the deeper of the depth of field Aperture has to be balanced by shutter speed and iso 02/01/2019 LDV 17
Aperture 02/01/2019 LDV 17
Aperture 02/01/2019 LDV 17
Aperture 02/01/2019 LDV 17
Aperture 02/01/2019 LDV 17
Your turn Switch the DSLR mode to shutter priority mode (AV). Take five different photos of a moving object changing the f stop each time. Come back to rm 15 and lets have a look at the results! 02/01/2019 LDV 17
Iso Refers to the sensitivity of the sensor to light The higher the iso, the more sensitive it is Therefore, if there is low light, the iso will be higher (1600 for indoors for example) If the iso is too high it can create visual ‘noise’ However, more high end cameras can handle a high iso 02/01/2019 LDV 17
02/01/2019 LDV 17
02/01/2019 LDV 17