Just a heads up about white balance...

[Dr. G]

Advertisement (gone after registration)

This weekend I was doing a project.  I was shooting a mural inside a home and the plan was to stitch everything together to create a panoramic of the entire thing.  I was in manual mode, exposure was consistent and I was using a static LED set to 3000K and a softbox.  White balance on the SL3 was set to 3000K.  After taking a few test shots and two of my initial shots I needed to change the battery.  Did so, checked my exposure settings and finished up the project - about 15 images in all.  When I opened the images n Lightroom I noticed that the 13 images I took after the battery change were warmer than my initial two.  It seems that when I changed the battery, the exposure settings were preserved but the white balance was reset to 3900K in camera.  I never touched my white balance setting after restarting the camera.  

Just wanted to give everyone a heads up and I'm going to report the issue to Leica.

Also, I know the difference between the first two images and the subsequent images differ by 900K.  Does anyone know if there's a program to correct that in Kelvin?  Lightroom doesn't have Kelvin values and I need to get these matched up.

[Advertisement]

The Leica Q3 is available for pre-order at B&H Photo Video and Adorama

[pegelli]

I always understood the "temp" scale in Lightroom is degrees kelvin when shooting dng.

When you shoot jpg the adjustment is never perfect, but you could take a photo with a grey card at 3000 and one at 3900 and use the dropper to determine how much you have to change to convert the 3900 setting to 3000.

[dpitt]

If I remember right, you can set a custom white balance in LR. In this case, take one of the shots at 3000K and adjust the sliders just a tiny bit. Then copy this custom white balance setting to all of your shots. Even if you only have shot JPEG it should be fine because it is only 900K. In RAW it is not a problem at all.

Edited May 20, 2024 by dpitt

[Photoworks]

44 minutes ago, Dr. G said:

Also, I know the difference between the first two images and the subsequent images differ by 900K.  Does anyone know if there's a program to correct that in Kelvin?  Lightroom doesn't have Kelvin values and I need to get these matched up.

just use panorama stitching in Lightroom. it should just automatically blend

BTW did you turn the camera off before removing the battery? it should have saved the settings.

 

[Dr. G]

6 hours ago, Photoworks said:

just use panorama stitching in Lightroom. it should just automatically blend

BTW did you turn the camera off before removing the battery? it should have saved the settings.

 

That's a good question.  I may have just put it to sleep and not held the button down long enough to turn it completely off.

Edited May 20, 2024 by Dr. G

[Dr. G]

6 hours ago, Photoworks said:

just use panorama stitching in Lightroom. it should just automatically blend

 

 

It won't, because the mural turned four corners.  The first two shots were of one wall and I had enough overlap for Lightroom to create a panorama.  I was basically moving the camera laterally to keep the walls parallel to the camera and always at the same distance.  All my images are filling the frame the same way, but when I got to an adjacent wall I would move the camera to a line that was the same distance to that wall as all the others.  This means that I don't have a shot of the intersection of the corners, really.  Even if I did, I'm not sure Lightroom could stitch that together.

As a result, the four walls of the room can be stitched together to form four panorama shots, but I'll have to use photoshop for the final stitching.

Basically I can get the first part of the first wall (which was the first two shots) stitched as a panorama in Lightroom and they're at the same white balance.  It blended perfectly.  The next wall, right after the corner, has the wrong white balance - but there's no overlap for Lightroom to pick up on and stitch, so I need to first correct the white balance and then stitch it manually.  I don't know if I'm explaining it clearly or not.

[Photoworks]

Advertisement (gone after registration)

1 hour ago, Dr. G said:

It won't, because the mural turned four corners.  The first two shots were of one wall and I had enough overlap for Lightroom to create a panorama.  I was basically moving the camera laterally to keep the walls parallel to the camera and always at the same distance.  All my images are filling the frame the same way, but when I got to an adjacent wall I would move the camera to a line that was the same distance to that wall as all the others.  This means that I don't have a shot of the intersection of the corners, really.  Even if I did, I'm not sure Lightroom could stitch that together.

As a result, the four walls of the room can be stitched together to form four panorama shots, but I'll have to use photoshop for the final stitching.

Basically I can get the first part of the first wall (which was the first two shots) stitched as a panorama in Lightroom and they're at the same white balance.  It blended perfectly.  The next wall, right after the corner, has the wrong white balance - but there's no overlap for Lightroom to pick up on and stitch, so I need to first correct the white balance and then stitch it manually.  I don't know if I'm explaining it clearly or not.

yes, why don't you slide the color temperature slider until the two images match the others ?

[evikne]

If you shot in RAW, just enter the same WB values for all the images in LR and they should get an identical WB.