Painting with Color Dodge Brush?

[austinmdiamond]

Hi, I am totally baffled. I have my layer set as Normal and my brush set as Color Dodge, with a blue color selected. I just successfully did the first screenshot with it working the way it should.

Now, I have just tried doing it again after a few minutes and the Color Dodge doesn't seem to be working, (second photo) even though I don't think I've changed any settings. Even though my brush mode is still set to Color Dodge, it looks like it thinks it is in Normal.

?

[c.pfaffenbichler]

Could you please post screenshots with the pertinent Panels (Toolbar, Layers, Options Bar, …) visible? 

[austinmdiamond]

I think I *may* have figured it out?

Well, as i continue to experiment to see whether I actually *have* figured it out, I have another related question (on a different project)....

Painting with my brush set to Color Dodge, it gives me the Color Dodge effect. However, the brush's Color Dodge does not seem to work if I try doing it on a clipping layer. I seem to need to do it on the original layer (which is annoying because I wanted to use a clipping layer so I don't color "outside the lines.") Shouldn't it still work? Why is this? 

[c.pfaffenbichler]

»Shouldn't it still work?«

If I understand you correctly then: No, it should not. 

»Why is this?«

Because Photoshop’s painting tools work on pixels in a Layer. 

You could change the Blend Mode of the Layer you are painting on.