Solving Exposure Problems Using Colorchecker: Exploring Photography with Mark Wallace 

No, not necessary....not unless ambient lighting changed so much that it needed a new profile. Just because YOU move, doesn't mean the sun or the shade moved :)

Bert Jones your end product can still benefit from color checker even using gels (or filters). A new profile for each lighting scene can be used...just takes a few steps to create it for each one

Joey Joiner Yes, the profile stays installed until you remove it, and it will be available to both Lr and Photoshop (ACR). For super-accurate colour (like if you're doing product shots, makeup, fashion, etc.), you'd want to make a fresh profile for every lighting scenario and camera/lens combination. If you just want consistency across all of your shots, then you can create "generic" profiles (preferably dual-illuminant - that's too big a subject for a RU-vid comment, but it's not hard to do) for your camera or camera/lens combo (handy if you know that one or more of your lenses is giving a different colour rendition, or if you're trying to match different camera bodies to get a "same shoot" look) and let white balance handle the rest. If you include a shot of the Colorchecker Passport in a shooting sequence, it will make clean white balance in post easy, and it will give you the option to create a new profile if things look a little wonky (or when accurate colour *for that picture or sequence* is critical), but a generic profile for your camera/lens will be close enough most of the time for everyday shooting - and it gives you something consistent to base your own default presets on.

1. Yes, white balance doesn’t matter. Unless you’re an absolute mad man and aren’t shooting in RAW then WB would matter. 2. The test photo should be shot in the same light as the photos you want to balance. So yes, flash on, otherwise the card on the test shot will be unbalanced from the other shots. The card should also be as close to the subject of your photos as well.

Victor Its got to be. Its horrible.. Thought Leica was better then that..

Marcos Enrique Ruiz Rivero II - the expo disc definitely helps to get the right white balance. Correct white balance is the foundation for correct color. But it's not a guarantee your colors will be accurate. You can test this by taking a pic after using the expo disc, the create a profile and use it in post. You should see a slight difference.

Yes...but usually only if you shoot in raw format. JPEG may not let you change the colors much....but, actually, just chAnging the color doesn't make it accurate... gamma, and black and white gray scale also is changed w the colorchecker. So, just changing color might just make it more or less red...or more brown, or pink because the base gray isn't accurate

You should be able to use Photoshop with the colorchecker as well, the plug in supports both apps.

Yes. This way you will get accurate color on spot where you photographed. But having a color checker is just small part of color management. Having a calibrated monitor will increase color accuracy even more, IF you have the right setting on your screen.

simianinc I see no one answered... but no, it's not the same. You can be properly exposed, and still have inaccurate color. Ideally you'll want to take a picture of the color checker AFTER you've identified the correct exposure; even better if you've also identified the correct while balance (though that's not "required".

The Passport is used to align the extremities of color closer to match your sensor and lens for one lighting condition. For example shade, tungsten, daylight. If a profile created for those conditions it will be valid there but not for other extreme light changes. So a sunset will and can have the camera profile for daylight applied yet the grey balance ( white balance if you like) will not be necessary to be applied. When creating a light-camera profile, the white balance is applied after the profile is applied. Personally I wouldn't attempt to white balance a sunset, yet may use a previously generated DNG profile to use the best color alignment possible.

+A Luay "And remember when that lens hood falls off... duct tape!"

YES!

But not for color :)

terenas1986 until you compare different sheets of "white" paper