In general, most of us believe that black and white photographs are sharper than the colored ones. However, you don’t necessarily have to shoot in black and white to get such sharpness. Instead, you can shoot in color and convert it into a black and white image.
You can use this color changing effect in order to sharpen the images you have already taken and improve the overall quality.
After converting a particular image into black and white mode, all you have to do is to increase the contrast of the image and sharpen it overly. Such setting would make a photo look much better; compared to its own color version, the black and white version would really nice and professional.