Is there a 'correct' way to convert an image to grayscale in Photoshop?


Question

In Photoshop, there are several ways to convert an image into black & white. For example:

  1. Image > Adjustments > Desaturate;
  2. Image > Adjustments > Hue/Saturation and set the Saturation to 0;
  3. Adding a completely black layer on top with the Saturation blend mode.

For 1. and 2. the outcome is identical, but 3. yields something different. Which method is the 'right' one to use, if there is any?

1
7
6/12/2014 2:04:00 PM

Actually, there are even more ways to make an image gray scale, e.g. via the channel mixer or several other methods, explained in this post:

How do I change a single layer to grayscale in Photoshop CS4?

Some of them offer different opportunities of fine tuning, yielding in very different outcomes. So there isn't really a 'right' method.

See those articles for some interesting results:

Digital photography school: seven ways to create sepia images

Spoongraphics: the best way to make your photos black and white

6
4/13/2017 12:46:00 PM

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