Luminosity shift issue in HSL adjustment (Affinity Photo)

[paologrinza]

Hi there,

 

I recently bought Affinity Photo and I'm trying to understand how it performs in my workflow as a substitute of Ps. Apparently there's a strange behaviour in the luminosity shift adjustment when you choose a single color and not the master option.

 

I attached a few screenshots to illustrate the problem:

 

1)  affinity_before_correction.png shows the image when opened with AP (I used a .psd file);

2)  affinity_w_correction.png shows the image when a slight luminosity shift of -10% is applied to the yellow color, the problem I'm referring to is the appearance of those grey "artifacts";

3) ps_w_similar_correction.png shows the image when a "similar" correction is applied in Ps, I say similar because I don't know if the corrections in the two programs are comparable in magnitude. Consider that such a problem never shows up in Ps even with huge corrections in the same channel.

 

As a final remark let me say that I tried different images from different cameras and in different channels finding always the same pattern (even with positive luminosity shifts).

 

Is there a real issue here? Am I doing something wrong?

 

Thanks a lot for your answer,

 

Paolo

 

P.S.: let me say that in all other aspects I tried, the program works very well. Good job! 

[TonyB]

Thanks for the info. We will look into this.

[3ark]

Are there any plans to fix this issue? It makes the Luminosity sliders completely unusable. I'm using 1.4.1 and the problem persists.

[csp]

this is  issue was reported in the early beta stage but was never adressed !

[MEB]

Hi 3ark (and csp),

Welcome to Affinity Forums :)

Thank for the heads-up. Somehow this one fall off the radar.

Issue logged to be looked at.

[3ark]

Hi MEB,

Sounds good, looking forward to the update. I use Affinity to colour match my digital and film work and this would make it so much easier. :)