This sale is for a brand new Cokin A003 RED Filter, the box might be a little shop worn but the filter is brand new with full COKIN manufacture's warranty.
 

For Black&White mode, set the menu on "B&W" position and use it like a Film camera.

Red filter must be used for extreme contrasts. By severely contrasting blue sky to almost black, it gives your pictures a dramatic character. By contrast, the clouds becomes more brilliant.

All warranty is done through the manufacture.