The amber filter "MC W2", "MC W4", "MC W10", and "MC W12", which are used for color correction when the color temperature is high (light is bluish) such as rain or cloudy, is from the conventional "multi -coating".Upgraded to "Super Multi Coating" with higher transparency and newly appeared.[W10/W12 Professional] When using a tungsten -type color reversal film under the sun, it will be reflected in blue if you leave it as it is.Use W12 or slightly light colored W10 for color correction in such cases.It can also be used for amber -colored coloring.Use for the purpose of lowering the color temperature.■ W10: +10 to decamed value.- for color temperature drop Color conversion Temperature (Warmer) hue Amber Decamed conversion value +10 multiple exposure 2 times (+1 squeezing) When shooting with a film camera, convert the photo -like color temperature of 5,500k (Kelvin) to 3,600k (Kelvin).