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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 5th March 2015
stoates stoates is offline
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Lightroom and Using Custom Whitebalance

A few weeks ago MargaretR started a thread which discussed recording a custom WB in camera.

http://e-group.uk.net/forum/showthread.php?t=36444

One of the responses from Invicta included the quote: -

"Then I use Olympus Viewer software for the initial conversion as, unlike Lightroom, Olympus Viewer can read the custom white balance setting. "

My question to Invicta or anybody else who may know the answer is 'What does LR do with Custom WB settings?'

I ask because I take a lot of long exposure images using ND filters, primarily my 8 stop Hitech IRND. I have never really successfully corrected the colour cast from using it in LR with auto WB set in camera (E-5). To attempt to alleviate the problem and get me in the ballpark I set a custom WB in the camera. This not only included the WB value but I also made adjusted corrections to the A and G sliders (-5,+5) which on the back of the camera looks to be fairly representative of the actual scene. I should point out I shoot RAW only so I expect I am looking at an image with some kind of processing applied by the camera (JPEG?). I also appreciate that the custom WB is only good for similar conditions to when it was set but as I mentioned it is hopefully there to get me to a reasonable start point.

My problem is that when I export the images into LR they appear briefly in the thumbnail to be ok but quickly change to a dreadful cast again (once I guess the default processing is applied - I use huelight colour profiles). What I have noticed is that LR does seem to take account of the Custom WB settings as Temp and Tint values change dependant on the Custom WB and A+G settings selected. However the image bears no resemblance to that seen on the camera LCD so I suspect there is some kind of 'issue' with LR and Custom WB. Any clarification/help on this gratefully appreciated.
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Old 5th March 2015
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Lightbulb Re: Lightroom and Using Custom Whitebalance

This may help:
http://www.luminescentphoto.com/blog...om-with-video/
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Old 6th March 2015
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Re: Lightroom and Using Custom Whitebalance

I am not sure Lightroom respects the custom white balance value (when processing RAW files) but I could be wrong. I will check myself.

Ian
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Old 6th March 2015
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Re: Lightroom and Using Custom Whitebalance

Quote:
Originally Posted by Ian View Post
I am not sure Lightroom respects the custom white balance value (when processing RAW files) but I could be wrong. I will check myself.

Ian
Thanks Ian. I know (or understand anyway from internet research) that White Balance appears to be one of the values that LR does read across with the RAW file. I have proved this to myself by testing different custom white balances and A/G tint settings - the output 'As Shot' WB values for Temp and Tint varied each time. What I don't know is how LR interprets the values, certainly there is a marked difference between the preview JPEG on the camera and on initial LR import and the LR processed file.
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Last edited by stoates; 6th March 2015 at 03:15 PM. Reason: Poor Grammar!
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Re: Lightroom and Using Custom Whitebalance

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Originally Posted by Graham_of_Rainham View Post
Graham, thanks for the link. The DNG Profile Editor may offer a long term solution to me trying to correct each image I take with the 8 stop filter. Certainly I have never been able to get acceptable results just by adjusting the WB settings in LR, even when using a grey card (spydercube in my case). I am just going to have to research the best way to go about using it now.
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Re: Lightroom and Using Custom Whitebalance

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Originally Posted by stoates View Post
Thanks Ian. I know (or understand anyway from internet research) that White Balance appears to be one of the values that LR does read across with the RAW file. I have proved this to myself by testing different custom white balances and A/G tint settings - the output 'As Shot' WB values for Temp and Tint varied each time. What I don't know is how LR interprets the values, certainly there is a marked difference between the preview JPEG on the camera and on initial LR import and the LR processed file.
Yes - I have tested this as well and WB as-shot is respected. It's possible the Lightroom value will be slightly different to what the camera came value is, or at least the interpretation of the value but in theory the differences should be minor.

When I shoot JPEG and RAW at the same time I rarely see much difference in white balance in Lightroom when the previews of the JPEG and RAW versions are side by side although the RAW in general will be less contrasty and less saturated.

Ian
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Re: Lightroom and Using Custom Whitebalance

I just today received an SRB 10-stop ND filter and have been trying it out this afternoon on my E-M5. It does produce a cast, specifically a cooling effect, but nothing very serious. Shooting the same scene with and without the filter using auto-WB produces files with different "as shot" values (I use DxO Optics Pro to process the RAW files) but if I match the with-filter settings with the no-filter settings, the results have a very similar colour balance. This is not an in-depth investigation as yet but I'm fairly satisfied with the results. Using Photoshop's Auto Colour tool on the jpegs also matched them fairly well, but there are other side effects with that.

I appreciate that doesn't answer the OP's question, but hopefully it might suggest something.

The SRB filter cost a lot less than the Hitech one too .
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Old 7th March 2015
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Re: Lightroom and Using Custom Whitebalance

Quote:
Originally Posted by Ian View Post
Yes - I have tested this as well and WB as-shot is respected. It's possible the Lightroom value will be slightly different to what the camera came value is, or at least the interpretation of the value but in theory the differences should be minor.

When I shoot JPEG and RAW at the same time I rarely see much difference in white balance in Lightroom when the previews of the JPEG and RAW versions are side by side although the RAW in general will be less contrasty and less saturated.

Ian
I generally only shoot RAW but to see what a RAW/JPEG comparison would be like in LR I used the RAW Data Edit function on the camera to produce the JPEG. I was initially surprised that the resulting JPEG was significantly 'bluer' than the preview JPEG from the original RAW image? I then realised that the camera converts the RAW file using the current camera WB setting rather than the embedded values. Once I re-converted using the same Custom WB values as the original shot, both looked reasonably similar when imported into LR. Disappointingly neither looked as good as on the back of the camera though.
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Old 11th March 2015
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Re: Lightroom and Using Custom Whitebalance

Quote:
Originally Posted by stoates View Post
Graham, thanks for the link. The DNG Profile Editor may offer a long term solution to me trying to correct each image I take with the 8 stop filter. Certainly I have never been able to get acceptable results just by adjusting the WB settings in LR, even when using a grey card (spydercube in my case). I am just going to have to research the best way to go about using it now.
This video should help out:
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