Hi
I'm moving over to Affinity from Photoshop. One feature of PS [in ACR] is the ability to adjust saturation & luminence separately for each individual colour [red /orange / yellow/ purple etc]. This seems to be missing from Develop persona in Affinity. The only way of approaching it seems to be with Curves [ only for RGB & therefore well near impossible for other tones] or by altering white balance [which is a bit of a blunt instrument]. You can do it to a certain extent with selective colour & HSL in Photo persona, but even here you are only adjusting colour bias, not luminence, & in any case working on the Raw file creates better results. Have I misssed something, please?