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Anonymous File :-(, x)
there are a few different ways, each giving different results.
I tend to usually just hit ctrl+u and slide saturation all the way left, but that's because I'm lazy.
A much better way to do it is to go to Image>mode>grayscale. Setting the mode to grayscale might seem like it's no different than desaturation, or it might be worlds apart, depending on your picture. Check this site out for more info as to why that is: http://www.inkjetart.com/tips/grayscale/index.html
Another way I've done it before, is to change the image mode to lab color, and in the channels pallet, erase the a and b channels. This will create a different result than the first two, usually the image will be lighter and seem a bit more washed out, but in some pictures it looks nice.
The last way I know of doing it is using the channel mixer, which is perhaps the most powerful way of turning your pictures black and white, since you have basically complete control the colors and hue through it. You can use it to make it seem like you used color filters with a b/w photo, which is really cool.
Whipped up this as an example of how they look. Should have included the color original, oh well.
And yeah, there's a /b/tard in me, hence the subject.
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