TTL or Manual, Different?

Now that's an interesting one because I ASSUME that the preflashes are used in the white balance check by the camera so reduced or increased output will affect the white balance assessment which in turn may affect colour and saturation. If so, for a balanced light exposure then the colour and saturation might well change depending on what the assessment is by the camera. The same will I suppose also be true but to a lesser extent for macro. I must admit that as I always shoot RAW and white balance afterwards so I've not thought of checking this but it makes sense to me.

 

Anyone else want to comment?

I think this might be partially true if you are using automatic white balance. If you are using one of the presets for white balance on the camera, it shouldn't make any difference. Further, if comparing RAW images, the white balance set at the time of the shoot will only be used if you tell the RAW convert using the captured white balance data.

Now that's an interesting one because I ASSUME that the preflashes are used in the white balance check by the camera so reduced or increased output will affect the white balance assessment which in turn may affect colour and saturation.

 

Anyone else want to comment?

Interesting concept and good thinking. But, as mentioned, this would imply that there are three ways for the camera to evaluate the scene, depending on whether the camera is set to AWB or a specific WB point and if flash is attached. (If flash is not attached, the camera cannot use pre-flash to determine WB)

Secondly, if the camera is hypothetically set to AWB, does it do a different scene evaluation if the flash is popped up vs. no flash. My assumption is that the camera is not that smart. It is not programmed to do different things depending on the 3 different scenarios. My guess is the camera knows if flash is attached and goes toward daylight balance WB. That's why mixed lighting scenes are balanced toward the flash range and ambient is off.

This was my assumption. I could be talking out my I mean I could be all wrong.