anyone heard of this white balance cap???
where to get it around kl , and is there any brand for this?? Additionally how to use it worr?? when i wanna capture the white balance, i put the cap on, point the camera to the light source (i.e sun / light bulb/ florescent light) and capture a custom white balance, then after that the pics all i take will be calibrated rite?? or there is some "skill" to use this white balance cap??

ooo so just attach the filter, and shoot the light source ah? what is the room is in a mixed lighting condition?? shouldnt i point the camera at the subject with the filter, then get a custom WB then only shoot the subject?