ProducerBoy

I think I'll hold off on updating until more information about the recent acquisition is made public.

An update right the day after the announcement that has everyone worried? No, thanks.

I'm sorry to be like this but the first thing I did was to run a comparison of the EULA from before and after. Given recent developments.
They are the same.

I've tried many times to paint in white or black on a mask with Overlay blend mode for precisely the reasons stated above. I'm glad for the workaround using the "mask alpha," but it would be really fantastic to be able to paint directly on a mask layer in white or black with the Overlay blend mode. 

The problem is now solved. It was due to another app (PopClip). They changed the default clicking behavior, so it was somehow causing the preview to disappear. Sorry for the confusion and thanks a lot for the help. 

I second this request. Select Sampled Color just isn't good enough. I need to be able to select a band of colors on the hue spectrum, not just a single color. Photoshop has this capability, and the HSL slider in Photoshop even allows the HSL shift to be applied to just a subset of the hue spectrum. It's a huge time saver!

I second this request. Select Sampled Color just isn't good enough. I need to be able to select a band of colors on the hue spectrum, not just a single color. Photoshop has this capability, and the HSL slider in Photoshop even allows the HSL shift to be applied to just a subset of the hue spectrum. It's a huge time saver!

I second this request. Select Sampled Color just isn't good enough. I need to be able to select a band of colors on the hue spectrum, not just a single color. Photoshop has this capability, and the HSL slider in Photoshop even allows the HSL shift to be applied to just a subset of the hue spectrum. It's a huge time saver!

And that is realy something Rasterize should not do.
 
 
Exactly. We need whole layer be kept when rasterized (including areas out of canvas).
This should be definitely renamed to rasterize & Trim to canvas or something.

I second this request. Select Sampled Color just isn't good enough. I need to be able to select a band of colors on the hue spectrum, not just a single color. Photoshop has this capability, and the HSL slider in Photoshop even allows the HSL shift to be applied to just a subset of the hue spectrum. It's a huge time saver!

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I am not really sure what you mean. Could you post an approximate example of what you want to achieve ? or do you mean something like this ?
 
 

I would generally appreciate if the Affinity Help system could be a little more specific about what the individual blend modes do, both mathematically and what this means for the appearance of the layers. Right now, the "Layer blending" section only has a short description of the most commonly used blend modes, the other ones being just listed without further explanation.

I personally never found the match color in PS very good, in fact, I rarely use it.
Now, what I'm posting might not look as the right answer as the final result if far from looking right, but I hope at least this will give you some hints on how to work around the problem and find other solutions.
I didn't pay much attention to the colors as I should have, I get a little nervous when I screen record  Hope I'll get better at this.
 
For what concerns the techniques in the breakdown video attached, I don't take any credit for them. I'm just adapting methods I have learned over the time and I have been using in PS.
There are other techniques, for instance, one called Saturation maps (if you google it you'll see what I mean). At the moment is not usable in Affinity Photo as it seems the relative option in the selective color is not working (at least here on my box). If it's a bug, I hope it'll get fixed soon.
 
The point is, there are different way to match the color and, despite my attempt below is not 100% prooving it (user's fault), I really encourage you to investigate more. They are more accurate, and they'll give you more tools to use (and not only to match colors). This is definitely one of those things I don't miss from PS
 

 
2017-11-11_13-22-18-export.mp4

YES YES YES YES YES YES!!! This functionality is super-important to my workflow. I often have images from which I need to extract a sub-object and give it a transparent background. My ideal workflow: roughly select that object. Magic-wand select the background around it and hit DELETE to make transparent. And then ... the piece that can't currently be done ... "trim to transparent" (or trim all of one color if it was on a solid color) and -> BOOM, a nice image of just that object on a minimal transparent or colored background.