Color to 4-level Grayscale

I have a color image and i want to convert it to a 4 level ( 2 bit Grayscale image.

How do i do it in photoshop ? By default, it converts to 256 level o grayscale

Regard

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sengkangbo
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sengkangboy wrote:

I have a color image and i want to convert it to a 4 level ( 2 bit ) Grayscale image.

How do i do it in photoshop ? By default, it converts to 256 level of grayscale

Regards

--
sengkangboy
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Convert to Grayscale. You might want to use better methods to get the B&W picture the way you want before you convert to Grayscale mode. I like the method found here: http://www.russellbrown.com/body.html

Then "Save for Web". Use GIF and select the number of colors you want. Four is one of the standard options. You will probably want to have Diffusion as the Dither method and set Diffusion at 100%.

The reason that you want a good, full zoned B&W starting picture is that 4 shades of gray won't cover much, even with 100% diffusion.

Clyde