Exercise: Primary and secondary colours

Photos of primary and secondary colours


6 photo x 3 manual exposure, for each photo  make  -1/2, 0, +1/2 stop.


To make things easier I used simple coloured objects against a seamless white background using my DIY lightbox

Yellow

50mm, f/2.8, ISO 100, O EV

Green

Canon EOS 50D
50 mm, 1/250s, f/2.8, ISO 100, +1/2 EV

Canon EOS 50D


50 mm, 1/500s, f/2.8, ISO 100, 0 EV

Canon EOS 50D


50 mm, 1/500s, f/2.8, ISO 100, -1/2 EV

Orange:

Canon EOS 50D


50 mm, 1/3000s, f/2.0, ISO 100, +1/2 EV

Canon EOS 50D


50 mm, 1/4000s, f/2.0, ISO 100, 0 EV

Canon EOS 50D


50 mm, 1/6000s, f/2.0, ISO 100, -1/2 EV

Blue

Canon EOS 50D


50 mm, 1/15s, f/16.0, ISO 100, +1/2 EV

Canon EOS 50D


50 mm, 1/20s, f/16.0, ISO 100, 0 EV

Canon EOS 50D


50 mm, 1/20s, f/16.0, ISO 100, -1/2 EV

Red

Canon EOS 50D


50 mm, 1/6s, f/16.0, ISO 100, +1 EV

Canon EOS 50D


50 mm, 1/20s, f/16.0, ISO 100, +1/2 EV

Canon EOS 50D


50 mm, 1/30s, f/16.0, ISO 100, 0 EV

Canon EOS 50D


50 mm, 1/45s, f/16.0, ISO 100, -1/2 EV

Blue

Canon EOS 50D


50 mm, 1/8s, f/16.0, ISO 100, +1 EV

Canon EOS 50D


50 mm, 1/10s, f/16.0, ISO 100, +1/2 EV

Canon EOS 50D


50 mm, 1/15s, f/16.0, ISO 100, 0 EV

Canon EOS 50D


50 mm, 1/20s, f/16.0, ISO 100, -1/2 EV

Yellow

Canon EOS 50D


50 mm, 1/10s, f/16.0, ISO 100, +1 EV

Canon EOS 50D


50 mm, 1/15s, f/16.0, ISO 100, +1/2 EV

Canon EOS 50D


50 mm, 1/30s, f/16.0, ISO 100, -1/2 EV

After analysing each exposures with each colour the effect of exposure is clearly affecting colour, and differently for each of them.


I think keeping these images as a reference to help anticipate the effect of exposure when mixing colours would be useful. Although the test would probably be best done under strict conditions like similar lighting conditions, Accurate white balance, etc ..