Getting WB correct help.

[P-E]

Right I am really giving RSE a try following Matt's tutorial but I am still struggling with the WB picker

Didn't want to bog Matt's tutorial down with my problems so thought I would start my own thread.

Here are some samples;

Not sure if they are easy to see but here is what I am finding difficult;

1; Clicked on the EXPODISC-GOOD reading of 6600
2; Clicked on the sky-GOOD reading of 4750
3; Cliicked on the sky-GOOD reading of 9250
4; Clicked on different part of the sky-GOOD reading of 6300

So I am getting GOOD readings but they range from warm to cool in the same picture obviously dependant on where I click the WB.

Is there a more accurate way to determine the WB in RSE?

I know I could just use the Expodisc everytime I take a shot but thats not always an option.

The frustrating thing for me is I suffer with colour blindness and really struggle to get things like this correct........is there a way I can use the numbers in the input/output boxes as reference?........as I don't like to rely on the AUTO buttons.

 

[RobertP]

The frustrating thing for me is I suffer with colour blindness

Can't help your query but I share your frustrations. My colour blindness is partial so I see things OK but can't trust my colour perception (and especially in reduced light). I can make things look right to me but have no confidence in the result

 

[P-E]

Can't help your query but I share your frustrations. My colour blindness is partial so I see things OK but can't trust my colour perception (and especially in reduced light). I can make things look right to me but have no confidence in the result

I thought I had seen someone else on here had a similar complaint

More or les the same here......I really suffer with colour shades so colour casts etc are a real nightmare.

 

[Gandhi]

Bit of a tricky one that, I guess that ultimately it depends on how you want the final shot to look, which is a problem in your case as you can't accurately judge the warmth/coolness of the image. Using an expo disc will give you the correct white balance for the scene, but that doesn't alway mean it's what you want. If the scene is quite warm eg sunset, I'm guessing that the expo disc method will correct the white balance somewhere back to neutral?


If you use the RGB readout on the eyedropper in RSE you can see the levels of different colours. if all three are 255 then the point under the eyedropper is pure bright white, if any of the colours are higher it would indicate a colour shift in that direction. eg a r235 g200 b200 would be a slight reddish tint. if you then click on the point RSE will atttempt to balance the three levels so they're all the same.

In your example, the colour temp reading you got off the expo disc is probably the correct one as 6500k is approximately daylight. Dpending on where you clicked in the sky RS has obviously seen it as warmer than neutral so has dropped the colour temp to compensate.

What I'm trying to say is that the colour temperature will be different on every shot you take if you want to have a pure white. What you have to remember is that white is not always pure white, your eyes always adjust to a scene to make the white appear so.

I don't think there is an easy answer, whereas we can use our eyes to see the difference you're going to have to learn how the figures and selection points affect the white balance and do it by numbers.

I'm willing to be corrected though........



Hope that helps? if only in a small way!

 

[P-E]

Thanks for your thoughts Gandhi most helpful & welcome

 

[MattEg]

If I don't have a suitable white balance point, I type in a value of 5600.
This usually suits my images.

 

[Marcel]

I too am colour blind and have similar problems.

The White Balance setting isn't usually a problem, because if I don't do it with the RSE setting, or the picker, or the as shot WB, or the Auto WB...I do it by eye, and what tends to look right.

However, my problem is with the second slider, tint. So typing a value of 6500 is usually a good solution, but for me, the tint value messes things up