How to Convert Image into Black & White

1. Prepare and layer

•  Begin by opening your image in Photoshop.
• Go to the Layers palette and Ctrl/right-click on the Background layer. 
• Select Duplicate Layer and 
• rename it Black and White – this way you won’t make an destructive adjustments to your original photograph.

2. Conversion

• Go to Image>Adjustments>Black & White. 
• This will open the Black and White adjustment feature. 
• Select the custom preset and 
• begin by adjusting the Red channel. 
• Use the Preview button and 
• Slowly drag the slider up to your desire

3. Channel adjustments

• Move down to the Yellow channel, which will most notably affect the model’s skin tone and the overall brightness of the natural sunlight.
• Bring the slider up to around 86%, as this will help to contrast the red tones and give a more striking black and white result.

4. Bring out the background

• Continue to adjust all the channel sliders. Lighten the Green to bring back some detail from the background bushes to around 57%. 
• Work slowly with the Magenta as there are a lot of di fferent red and magenta tones here, which could create a posterisation effect.
• Settle the slider at around 75%.