Is the Black-and-white mode of digital camera useful?

We can't say it is not useful, and many people like to take black and white photographs, as well as a reminiscence photo which is brown black and white, digital camera design since the function of taking black and white photographs, Those friends who love black and white photo can easily take this kind of photo. However, some digital cameras has no this function, butthat does not matter, we can change the color digital photos into black and white nnes by computer.

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