White Balance and Exposure shift with X-T2 and AD200

[Carlos Mendes]

Hi there, I've just bought a Godox AD200 with an XPro F trigger, and I'm looking for some help to understand why I get a color and exposure shift while using TTL vs. using it on manual mode, using the same settings.

 

I'm attaching an example to explain the current behavior:

- The image on the top has been taken with TTL

- The image on the bottom has been taken in manual mode.  I've used the TTL-Convert-Manual (TCM) function to convert the first shot TTL settings to manual mode. 

 

I would expect the images to be the same since, in theory, I'm using the same settings. 

 

But there's a big color difference and also about a half a stop difference regarding exposure.

 

Color temperature:

- There's a difference of 700k from what I can see on Lightroom (the TTL image reports 5900 on the  Temp slider while the manual image reports 5200 on the Temp slider)

- There is also a minimal difference in the Tint slider (10 for the TTL image vs. 15 for the manual image)

 

Exposure:

- To get the image taken in manual mode to look the same regarding exposure, I have to increase the exposure by about +0,45   

 

Some additional info:

- I'm using Auto White Balance

- Shutter speed 200. Aperture 8. I've taken a test shot, and there's no ambient light affecting the images

- I'm using the AD200 without any modifier pointed to the ceiling to bounce the light

- The histogram on the left is from the top image (TTL). The histogram on the right is from the bottom image (manual)

- I'm using a Fuji X-T2 with the Godox XPro F trigger

 

Here's a link to the RAW images in case you want to compare them:

https://www.dropbox.com/sh/x48i82797jntlh4/AACu7oZuoDE40H6jJlTFInMFa?dl=0

 

 

 

Are these differences between TTL mode and Manual mode expected, even using the same settings?  

 

Thanks in advance

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Edited July 1, 2018 by Carlos Mendes

[MarioM]

Hi, Carlos. I found your older thread, because I made the same experience. 

 

X-T2, 2x AD 2oo in brolly boxes, X-Pro2 as trigger and a huge color shift when using TCM. In TTL, I got clean colors, converted to manual, I got a massive blueish colorcast. And again, AWB, and I guess, that could be the reason. Didn't had time on the shoot to switch to 5600 K as WB. But I will test it asap. 

 

Mario

Edited January 1, 2020 by MarioM