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View Full Version : White Balance....


Kathy Rappaport
May 7th, 2007, 11:20 PM
Thank you, Nik....

Oh if white were only white and my office wall were not blue.

I did a photo shoot several months ago of reading eyeglasses (100 pair!) and my client was very happy with them. He had someone else change the tone to white where needed and I think I made some edits too.

So this time, I shot much faster, but I have still not mastered enough PS or other software to get that cast out. These eye glasses will be sold on a website and the white has to be high key but not blow the color out. The good news is that I had zero reflection so I laid them properly in the tent. I also hand held the camera so I could center the main focus on the bridge of each pair.

I used a shooting tent, some hot lights (a Photoflex kit), my 24-70 - mostly at 50mm some at 70; I did white balance on Kelvin 5500 and I shot RAW and Jpg. I attempted some editing but our local PS guru Nik and I will be chatting shortly. He said it's very easy and he can even talk me through the edit on all 84 images at once. ...

Nicolas Claris
May 8th, 2007, 01:26 AM
Bonjour Kathy
Sometimes whibal or such cards aren't easy to use, sometimes I just forgot I have one (shame on me!) then a little action named "billscolorcast" can be very handy, when I use it, I oftenly tweak the layer between 4 to 7%... can be usefull, one can download it from there (http://www.outdooreyes.com/photo120.php3).
HiH!

Kathy Rappaport
May 8th, 2007, 05:25 PM
Thank you Nicolas. My images are burned and gone but there will be more coming!

Now, if I can only raise the prices to where they belong and get paid appropriately for this work!

Bart_van_der_Wolf
May 8th, 2007, 05:31 PM
Oh if white were only white and my office wall were not blue.

It really isn't all that difficult, especially when, as you did, you have Raw data files available.

There is a tool that can help tremendously with the type of shooting you described. One also has to understand that the highest 1/3rd stop before saturation/clipping isn't necessarily neutral in color.
So, by shooting a truely white object (http://www.babelcolor.com/main_level/White_Target.htm) and 'underexposing' it by 1/3rd or 2/3rd of a stop short of clipping should provide a test image where specular highlights are allowed to clip to white and the white test object could be used for a 'click white' white-balancing in the Raw converter, while getting an optimal exposure (to the right of the histogram).

Bart

Nicolas Claris
May 9th, 2007, 12:17 AM
if I can only raise the prices to where they belong and get paid appropriately for this work!

Next contract is the best opportunity!