Open your image in PS, first thing to do is duplicate the layer so you aren’t working on the original.
Do all your post processing that you would normally do.
Then open the layers pallet, down the bottom is a circle with a line through it called adjustment layers,
Click on this & select Hue Saturation. A box will appear just click OK, then with the layers blending modes drop down list “Upper right, “normal” will be written there” select Color.
Then make another Hue Saturation layer this time push the saturation slider all the way to the left this will turn your image to B&W.
Then make another adjustment layer as you have done, but this time select levels.
Now you should have 5 layers counting the duplicated original image.
Go back to the first Hue saturation layer & double click the layer in the layers pallet; this will bring a box up with three sliders.
Adjust the hue & saturation slider to see what effect it has on the image, the drop down list at the top of the pallet will provide you with the control over all the colours in the image “The same effect as using colour filter on the lens when shooting B&W on film.
Then select the levels layer & have a play in there just to get it right.
After you have done all this & are happy with it flatten the image & save.
I hope this is of help, any “Q” just ask
Cheers
Ray
