Any colour digital camera will take full colour captures whether set to colour or B&W. It has to as it's not changing the bayer filter. By setting the camera to B&W you visualize the scene in B&W. Depending on the software you use it may or may not honour the B&W settings. For eg on my Sony when I switch to B&W while taking, Photo Mechanic (which I use for importting) sees the images in B&W but Lightroom in colour and I have to convert.