White Balance: Whibal

[Doug_Kerr]

Hi, Kevin,

Originally Posted by KevinStecyk

It's been a while since I viewed this video, but as I recall, the Whibal unit shown in the video is quite small . . .

Yes, but do we know that the photographer did not "shoot it" for the reference frame from close up so it filled the "center circle"? That is of course what I have to do.

. . ., yet the photographer seemed to have color corrected his photos before showing his clients the images just after shooting them. My impression was that you needed the center portion of the viewfinder filled with the target for Canon to properly set its whitebalance.

That is my understanding. But see my comment above.

Best regards,

Doug

[Doug_Kerr]

Hi, Kevin,

Originally Posted by KevinStecyk

Hi Doug,

It's been a while since I viewed this video, but as I recall, the Whibal unit shown in the video is quite small, yet the photographer seemed to have color corrected his photos before showing his clients the images just after shooting them.

I just looked at the video. There is no intimation that the images displayed immediately after the shoot have been color corrected, so I find no curiosity here.

I presume that that intent was to use the WhiBal image in the test images to control white balance color correction during raw development. Of course in that case, you only need its image to have a size of perhaps 5x5 px.

By the way, the use of a DVD player as a readily-available, not-too-expensive monitor is very handsome. We have planned to do that, but haven't gotten around to it. (For now we use a little battery-powered TV receiver, but it is a CRT machine and is still fairly bulky).

Best regards,

Doug

[KevinStecyk]

Originally Posted by Doug_Kerr

I presume that that intent was to use the WhiBal image in the test images to control white balance color correction during raw development. Of course in that case, you only need its image to have a size of perhaps 5x5 px.

Hi Doug,

If he was just planting a white control point via a Whibal balance, then everything makes sense. I was under the impression that he had color corrected his images before even showing his rough work to his clients.

I am using a similar but larger device called the

PhotoVision: Product List

[Photovision Target] Thank you Doug for looking into this matter and commenting!

Best regards,
Kevin

[PB&J photography]

Regardless of size of the target, the beleif is that if you have some neutral point in a frame you can use that as a reference in post processing to do your color correction. All it's doing is adding the neutral piece for the post processor to click on and set his white balance to process those images.

With that theory and cocept the size of it doesn't need to be very large as all they are doing is clicking on it during processing.

With Ed Pierce's targets, you are actually setting the reference shot and making a custom White Balance. Filling the entire frame, or as much as possible allows only the three colors on the target to reflect light back to the lens. The idea being (as I'm sure you know) to give you a "perfect" histogram. Three nearly equal spikes. Originally designed as an exposure target due to lack of dynamic range on digitals, using the three colors takes care of the low's, mid's and high's. Helping you to now blow out the image and keep the midtones. In other words, a good exposure. But, with further testing, it was found that using the same method helps create an ideal white balance.

As white alone for a custom white balance did not do as well as using all three colors on the target. Additionally, you now have a reference point for further enhancing in your post processing. (The photo/ reference image) of the target.

[KevinStecyk]

Thank you for your information. I have PhotoVision Targets. : )

[Doug_Kerr]

Hi,

Originally Posted by kixpixphotography

With Ed Pierce's targets . . .

What are "Ed Pierce's targets"?

As white alone for a custom white balance did not do as well as using all three colors on the target.

Do these targets have three color patches? How would we use them with the Canon custom WB scheme?

Best regards,

Doug

[KevinStecyk]

Originally Posted by Doug_Kerr

Hi,



What are "Ed Pierce's targets"?

Do these targets have three color patches? How would we use them with the Canon custom WB scheme?

Best regards,

Doug

Doug, Ed Pierce's targets are the PhotoVision targets that I referenced earlier:

PhotoVision: Product List

Hope that helps.

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