If you have a subject standing in front of a brightly lit window with their silhouette outlined, the b&w gives the feeling of a sharper silhouette when the color is gone.
Tips for black and white photos         Contrast: Contrast in a photo will make a more striking black and white. If you have a subject standing in front of a brightly lit window with their silhouette outlined, the b&w gives the feeling of a sharper silhouette when the color is gone. The bright white compared to the dark black will make your image more striking. While contrast is wonderful, you also want your image to have tones. When a colored photograph is converted to b&w, the colors are turned to tones. More colors in your photograph mean more tonal range in your photo.