Understanding how this polarizing effect works
Download and save the following JPG file to your computer then open it inside Adobe
vancouver.jpg 204.46 Kb (Right mouse click> Save As)
Once you have the photo opened inside Adobe Photoshop, look inside the Channels pallet
(Window> Channels). Inside the Channels pallet, click on the each of the channels and
notice the differences between the channels.
So the red channel’s characteristics are similar to those characteristics of a polarizing
filter (reduced reflections and darker blue skies & green vegetation), but how do we apply
those characteristics to the image? In the next page, we’ll teach you a fast and effective
way of simulating a polarizing filter.
Applying the Polarizing Effect
To apply the characteristics of the red channel into the entire image, we need to replace
the luminance of the entire image with the image from the red channel.
Open an image you would like to work with or use the vancouver.jpg file we still have
opened in Photoshop.
Duplicate the current layer (Layer> Duplicate Layer or Ctrl+J).
Go in to the Channels pallet (Window> Channels) and click to select the Red channel.
With the red channel selected, create a selection of the canvas (Select> All or Ctrl+A) and
copy the selection to clipboard (Edit> Copy or Ctrl+C).