You can easily convert colour photos to a grayscale in the Develop module, either by:
- Pressing the V
- Clicking on the Grayscale of the right panel
Lightroom will do a pretty good job of converting but… There’s always a but, the pretty good job is not always the right job. In the right panel underneath the Grayscale it shows various colours and each one affect different portions of the photo.
Lightroom: Gray Scale Mix
|Red||Hide skin blemishes & change greeneries|
|Orange||Change the skin tones|
|Yellow||Minor changes to skin tones|
|Green||Strong effect on plants and greeneries|
|Acqua||Skies & water|
|Blue||Skies & water|
These are just rough guidelines. They are good starting point and you will need to experiment with the channels.
Don’t forget to also adjust:
- Tone Curve
AFTER the grayscale conversion.