@Chris2498153166nt wrote:
From what I understand, even if I sent away test prints to someone who creates custom ICC profiles, this would be unlikely to solve my problem as the Brother printer would still colour manage on top of the profile? This would occur even if an ICC profile was used via Lightroom rather than choosing "managed by printer"?
Right because both Lightroom Classic and the printer driver have to be coordinated; the color conversion has to happen on only one side or the other. If you choose a print profile in Lightroom Classic, it converts the image using that printer profile and sends the job in that color space. If color management is disabled in the printer driver, that’s perfect…the printer driver takes that pre-converted data and sends it on through as is. But if there is no way to disable color management in the printer driver, the printer driver will probably convert those pre-converted colors assuming it was receiving generic sRGB (what other applications would send)…and that would be both an incorrect conversion, and double color management.
@Chris2498153166nt wrote:
If that's the case then I agree, will either have to suck it up or maintain a second photo printer (which I should check for an ICC profile before buying now that I know about ICC profiles!).
A lot of current printers, even the inexpensive ones, actually make decent photo prints on media types built into the printer driver (using Managed by Printer). On those media types, custom profies might not improve photo quality very much, and any improvement would be limited by having just four ink colors (compared to the additional inks a pro photo printer has). Custom profiles help the most when you want to get the most out of another kind of paper that isn’t already listed in the Brother printer driver, like a fine art photo paper. If your goal was to use better photo papers not supported by the printer driver, it would be a challenge to get the most out of those without a custom profile.
At least you’ve profiled your display, that’s a good thing. That will probably make more of a difference when working with a home/office type of printer.