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Software Discuss Olympus Master, Studio and Viewer software applications as well as third party programs like Adobe Photoshop, Lightroom, Apple Aperture, and others.

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Old 30th January 2012
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Correcting WB and tint

Hi,

I have managed to do a stupid thing.

Without noticing, while on travel, I somehow managed to turn the customizable F button to “one Touch WB”. I noticed this first after having filled a memory card and looking at the JPGs files on a laptop where it was quite clear that the pictures have incorrect white balance, pictures appearing way too warm.

The good thing is that I store the pictures not only in JPG but also in RAW, so I will be able to adjust color temperature.

Now I am back at home and with access to the digital lab. The color temperature meter reads 11500K (if correct, one would have expected 5000K - 7000K or something like that)

Question is - what should be the correct value? My travel companion did capture some of the same motifs, using same camera (E620) as me at about the same time and from about same position, those pictures are probably easiest to correct. But what about the other pictures - most of them don't have any neutral gray areas that I could use to calibrate. Are there rule of thumbs regarding color temperature in relation to position of the sun?

What also is a tricky parameter to tune is the tint (green - magenta).

When looking at my companion's pictures I also noticed that there are quite significant differences between adjacent pictures in a series (pictures taken at same time, from same place but different angles/composition). Differences could be as large as +/- 500K and +/- 3 tint. E.g. one picture would have 5500K and +3 magenta, next one 6500K and +3 green.

Should I simply process empirically and tune them to my liking? Any advise regarding the best way forward would be greatly appreciated.

/Tord
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Old 30th January 2012
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Re: Correcting WB and tint

Tord - do you happen to use Lightroom? If so, you can auto correct all of the images on import - or very easily if they are already imported.

I believe you can do similar in Adobe Bridge.
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Old 30th January 2012
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Re: Correcting WB and tint

John,

I use DXO Optics Pro V6. In DXO there is nothing such as a "apply auto WB" feature (not sure I got your question right?)

The rich feature set allows to apply a color scheme of your choice (color temperature and tint) on individual pictures, or a set of pictures.

There is also an "eyedropper" tool that is useful if you know areas that are supposed to be neutral grey. This is however not the case in the majority of the pictures. Furthermore most of the pics are taken at early or late hours, meaning there is inbuilt warm tones that I want preserved, e.g. clouds cannot be used since they are not white/grey. I applied it on a few pictures taken mid day, clouds against blue sky, and got acceptable results - still different from the results achieved by the camera used by my travel companion.



/Tord
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Old 1st February 2012
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Re: Correcting WB and tint

John,

I have now corrected the WB on all pictures I indend to preserve, using empiric method (i.e. to fit my liking and to the best of my memory). I ended up in having to apply color temperature in the range ~5200 to ~7200K, and tint between ~20 Green and ~20 Magenta on a 100 scale. The latter was the most tricky one.

Results are OK, I intend to share some pictures later.

While doing the above, I managed to back track the date of the "incident" when the F button was accidentally customized to one touch WB to occur on New Year's Eve 2011 (daytime, while on walk in the countryside, before champagne . I came home with some winter landscape pictures and noticed that pictures taken in afternoon were rendered with warm tones, my immediate thought was it must have the low standing sun but I did not give it a deeper thought and put them aside for later processing.

Yet another lesson learned. Luckily, I saved in RAW format. I suspect JPG would have been much more difficult to restore, am I right in this?


/Tord
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Old 1st February 2012
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Re: Correcting WB and tint

Quote:
Originally Posted by Tordan58 View Post
John,
I suspect JPG would have been much more difficult to restore, am I right in this?


/Tord
I once took a the best part of 100 shots in JPEG on a shipwreck in the Red Sea. Unfortunately I got the WB off. It was impossible to get accurate colours and going back to re-shoot would have been very expensive. I have never shot in JPEG since.

Steve
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Old 1st February 2012
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Re: Correcting WB and tint

Quote:
Originally Posted by Tordan58 View Post
John,

I have now corrected the WB on all pictures I indend to preserve, using empiric method (i.e. to fit my liking and to the best of my memory). I ended up in having to apply color temperature in the range ~5200 to ~7200K, and tint between ~20 Green and ~20 Magenta on a 100 scale. The latter was the most tricky one.

Results are OK, I intend to share some pictures later.

While doing the above, I managed to back track the date of the "incident" when the F button was accidentally customized to one touch WB to occur on New Year's Eve 2011 (daytime, while on walk in the countryside, before champagne . I came home with some winter landscape pictures and noticed that pictures taken in afternoon were rendered with warm tones, my immediate thought was it must have the low standing sun but I did not give it a deeper thought and put them aside for later processing.

Yet another lesson learned. Luckily, I saved in RAW format. I suspect JPG would have been much more difficult to restore, am I right in this?


/Tord
Glad you are sorted with the w/b of all your images. You are right... and as others have mentioned; had you shot them in JPG they would have been trickier to restore. It isn't impossible to correct the w/b with JPG's, but you do get far more control and considerably more leeway when you shoot in RAW.
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Old 1st February 2012
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Re: Correcting WB and tint

I have given up shooting Jpegs, raw gives me everything I need and the additional cost of memory cards is more than offset by the savings in workflow.
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Old 1st February 2012
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Re: Correcting WB and tint

I think you are right that it would have been much harder to correct the JPEG files. But it ought to be possible and you never know, maybe someone has some preset actions or something that would do the trick.

And if you are still stuck, have you thought of becoming a black & white specialist?

John
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Old 1st February 2012
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Re: Correcting WB and tint

I often shoot using both. I use the JPG temporarily for e.g. quick browsing/evaluation on computer, quick sharing etc until I have processed the ORF for the pictures I decide to keep. When done, I delete the JPGs created by the camera.
/Tord
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