Here I’ll explain the process of fading from colour to B & W in as few steps and with as much flexibility as possible. This technique is not selective colouring but is more about achieving a gradual fade from colour to black and white, sepia or in fact any other combination of the same image that is different.
For those of you more familiar with photoshop, it's a two step process!
Step 1 Layer > New Adjustment Layer > Black & White
Step 2 press G select Black to transparent Draw a gradient on the new layer mask
That’s all there is to it!
Step 1
Add a new Black & White adjustment layer
Layer > New Adjustment Layer > Black & White
There are many alternative ways of converting to black & white, for example the channel mixer or simply hue/saturation
Step 2
Ensure that the mask on the Black & White layer mask is active by clicking on it.
Select the Gradient tool either from the tools menu or by pressing the letter G.
You’ll need to make sure that the default black to transparent or transparent to black gradient is selected, This is normally the first one in the drop down box
Step 3
Draw a gradient over the picture the longer the line you draw, the longer the transition from colour to B&W
Experiment with different gradients.
Here's the finished picture
If this is of use to at least one person, then it was worth my time.
Alistair