How to make a rainbow for colourful abstract photos: steps 3-4
03 Camera setup
Set your camera to Aperture Priority and use a wide aperture, such as f4. This will throw the background and some of the water out of focus.
At 400ISO in direct sunlight, this should also mean the shutter speed is fast enough to freeze the motion of the water (1/2000 second here).
Shooting against a shady backdrop may cause your camera’s meter to overexpose the rainbow effect, so dial in about a stop of underexposure using your DSLRs Exposure Compensation button.
04 Boost colours
Without anything solid to focus on, your auto-focus will hunt around and probably end up on the background, so switch to Manual Focus instead and focus on the water drops, then start shooting.
Once you download the images, open into Photoshop’s Camera Raw or Lightroom then use the sliders to increase contrast and saturation.
Use the HSL Panel in Camera Raw (or the Hue/Saturation command in Photoshop) to target the saturation of different colour ranges. You can boost any colours that need a lift, such as the blues and oranges in the rainbow.
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