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Feature comparison table
among most popular white balance tools on the market

 

  Photo use Video use tool measures exposure tool measures incident white balance tool measures reflective white balance 18% reflective grey low light white balance size of grey card contrast control

maximum safe exposure zone

black patch 18% grey target carry bag # of density region for RAW workflow management
PhotoMasterTarget disc
x
x
x
x
x
x
x
115 sq.in
x
x
x
x
4
Kodak 18% grey card
x
x
x +6
x
x
80 sq.in
1
Robin Meyer grey card
x
x
x
x
+4
x
54 sq.in
1
Expodisc standard
x
x
x +5
x
x
1
Warm Card
x
x
x
x +1
x
20 sq.in
1
Gretag-Macbeth color checker
x
x
5 sq.in
x
x
24
Gretag-Macbeth grey scale balance card
x
x
x +2
x
30 sq.in
x
x
3
WhiBal
x
x
x +3
x +3
x
x
21 sq.in
x
4

+1 Allows warm reflective reading with included blue cards.
+2 Mostly in Raw mode only due to small size of grey patch.
+3 Designed to be used in RAW mode editing, grey card available in small and extra-small.
+4 RMImaging uses a 33% reflective card.
+5 You need to move to subject position to evaluate the exact amount of light in studio setting.
+6 The Kodak grey card needs to be changed for a new at regular intervals. This card is inexpensive, but failing to replace it will make the readings untrustworthy.