Creating Shaded Relief like the professionals (Phothsop or Gimp)

[Turambar]

Because I'm too lazy to actually try this, how does this technique compare with using a single multiply blend mode for the grayscale modifier on the color?

Using a single Multiply ends up darkening the overall colors too much. This method allows you to preserve the base colors while just darkening the shadows and lightening the highlights. If you watch the video, it shows both methods. Multiply works for a fast and dirty shaded relief, but this method allows for a lot more control.

[Naima]

Using a single Multiply ends up darkening the overall colors too much. This method allows you to preserve the base colors while just darkening the shadows and lightening the highlights. If you watch the video, it shows both methods. Multiply works for a fast and dirty shaded relief, but this method allows for a lot more control.

I will take a try , usually I use several layers combinations using different blendings according to what I want to exhalt and in combination with masks, but I will have to try your approach to , thankyou for sharing.

[Turambar]

Shouldn't having a separate overlay and multiply solve the the color change?

This approach ensures that the highlight layer only lightens the bright areas and the shadow layer only darkens the shadows, thus leaving the base colors in other areas unaffected. It allows for a cleaner look, though it takes a couple extra steps.

I will take a try , usually I use several layers combinations using different blendings according to what I want to exhalt and in combination with masks, but I will have to try your approach to , thankyou for sharing.

Would love to see what you come up with. Though it is not really my approach, as I just wrote down the steps form the video. It is the approach used by Tom Patterson and other professional cartographers at the US National Park Service and USGS.