knowledge Flashcards
what is ISO
the measurement of the sensitivity of the image sensor to light (higher ISO = more sensitive to light)
what impact does high/low ISO have on a picture
high ISO - more digital noise (grainy)
low ISO - no digital noise or grain
hard light
light only comes from one direction
soft light
softer, let’s colour stand out
high key lighting
Mostly white
low key lighting
Mostly darks
back lighting
silhouettes
rim lighting
back light, creates a rim around the subject
if the photographer selects the aperture what does the camera automatically set?
the shutter speed
what is shutter speed
the amount of time that the shutter is open
name 5 ways to reduce camera shake
1) use a faster shutter speed/shorter exposure time
2) use tripod/monopod/beanbag
3) use better lighting
4) use a larger ISO number
5) use timer on tripod
what’s the difference between diffuse and specular reflection?
specular - reflected off smooth surfaces
diffuse - reflected off rough surfaces, in random directions
what would a small and large
f-number be used for?
portrait of person - small f-number
picture of loch + mountains - large
f-number
how is aperture measured?
f-number
Which of the following reduces the amount of light entering a camera?
a neutral density filter
