[atm700]

why some times , people use a "grey card" to set the white balance??

[andrew]

hahaa.. see my profile.. is that one in my left hand ?

[atm700]

ya.. why need to grey??? shouldn't we use white for white balnce?? ^^"

[hytong]

grey card is used to set correct exposure for reflective metering

[atm700]

Don't relly understand... ^^" haha...

[cfkw]

There r 2 faces of a Grey card.
The grey side of the
"grey card is used to set correct exposure for reflective metering "
The other side is white. That for white balance setting.