Message 20 Déc 2010, 23:59

Convert a photo into black and white with photoshop

In this tutorial I'll show you how to convert a photo into black and white with Photoshop.

NB: If you have problems viewing images in this tutorial:
Right click on the white square with a red and click on the "image display".

There are several methods for converting a photo into black and white.
One method that is both simple, and at the same time provides great flexibility, is the method of mixing layers.
With this method, you can dose each color (Blue, Red and Green) in your image black and white to bring out a detail that was originally in color.

Open a photo in Photoshop, for our example we will take the photo below:

01.JPG
01.JPG (212.58 Kio) Consulté 2869 fois

Click the "Adjustment Layer" (the circle with half black and half white), then in the menu select "Channel Mixer" as below:

02.JPG
02.JPG (70.91 Kio) Consulté 2869 fois

A new layer is added automatically, the Mixer window appears.
In this window, select "Monochrome".

03.JPG
03.JPG (63.82 Kio) Consulté 2869 fois

The image is now in black and white.
With sliders basic colors Blue, Red and Green, you can choose dominaces color in your black and white photo.
WARNING! Always the sum of the 3 basic colors make 100% to stay faithful to a normal black and white.
However, to give effect, you can choose the values you want.
You can also change the contrast to enhance the blacks for example.
For this photo, the settings are: Red 100% Green 1%, Blue 1% -7% constant.

04.JPG
04.JPG (52 Kio) Consulté 2869 fois

Here is the final result, a black and white converts from a color photo with Photoshop.

05.jpg
05.jpg (182.26 Kio) Consulté 2869 fois

Enjoy ! :dance:
NIKON D7100 *** NIKON 17-55 mm AF-S DX f/2.8G G IF ED *** SIGMA 70-200 mm F2,8 APO DG OS EX HSM Nikon D *** SIGMA 120-400mm F4,5-5,6 DG APO OS HSM Nikon D *** SIGMA 105mm F2.8 EX DG MACRO OS HSM *** SIGMA 8-16 mm F4.5-5.6 DC HSM *** Flash SB600