How do I shoot photographs in black & white?

Question: My new camera has a setting to shoot in monochrome. Is it better to use this in-camera setting or convert to monochrome while post-processing? 

Answer: Both methods have their pros and cons. Using your camera’s monochrome setting means that you can review images immediately in black & white. You can then make adjustments according to what your image looks like stripped of colour, such as changing your settings, adding filters or altering the composition. The danger is that if you shoot in JPEG mode, there’s no going back – your images will then remain in black & white forever. The safest option is to shoot in RAW and use the monochrome setting to review images on the LCD screen. As RAWs consist of the ‘raw’ data, they’ll hang on to the original colour too, so you have the choice of both colour and mono back at your computer. RAWs also retain a greater level of tones and detail. Whether you shoot JPEG or RAW, a camera’s monochrome mode is a great way to hone your eye and visualise the world in black & white.

Photoshop
In the adjustments on the right-hand side of the screen, click on Channel Mixer. This creates an Adjustment Layer and opens a Properties box. Tick the Monochrome option in the Properties box

Elements
Open your pic and click on Enhance>Convert to Black and White . Now select a style from the options that appear, adjust Red, Green, Blue and Contrast to suit your image, and click OK. 

Lightroom
Import your pic and hit D to go into the Develop module. Then select Basic from the list of options on the right and select Black & White from the treatment options. Your image will convert to black & white.