PhotoDesk greyscale?

I loaded a JPEG into PhotoDesk with a view to making it greyscale. I find the UI to be… non-intuitive, but okay…
…what I cannot find, and what I may be mixing up with the editor I use on the PC, is an option to adjust the saturation. Does PhotoDesk not have such a thing or did I somehow miss it?

To make an image grey scale; click on the Mask/pen/eye icon on the toolbar to bring up the channels window, from it’s menu choose “convert image mode”, select indexed, and tick the gray scale palette.

To change saturation, click on the RGB paint pots icon to bring up the colour picker window, under the colour patch select Tone from the menu, then click on the S icon and drag the bar to increase or decrease saturation. Apply the change with any of the painting tools, for the whole image use the magic wand tool.

BTW: I’m operating the RISC OS Pi 4 over VNC from a considerable distance, and graphic work is as painful as you’d expect.

click on the Mask/pen/eye icon […] click on the RGB paint pots

Thank you so much for that and the very concise descriptions of what to do. Helps to jog my memory of where all this stuff is hiding.

graphic work is as painful as you’d expect.

Hmm, the server, it doesn’t compress does it? That being said, when I’m controlling my XP box remotely via TightVNC, I tend to open a blank Notepad window and open it at the back because even with reducing the colour depth to eight bits, it’s really slow at sending the desktop.

Thanks again.

Thank you so much for that and the very concise descriptions of what to do. Helps to jog my memory of where all this stuff is hiding.

I remember how to do it, but I couldn’t describe it without running up the application, as there are a lot of powerful featured buried in the interface.

Hmm, the server, it doesn’t compress does it?

Probably wouldn’t help editing a JPEG, but not having a plain pinboard instead of the tiled RISC OS Pi sprite, would certainly make closing the window quicker.

Thanks for the Greyscale method, I had forgotten how to do it.
Something else that I do a lot is to lighten an impage prior to printing. Any recommendations? I have tried various options in with the Image Processing tool, eg Equalisation, and Gamma but it is a bit hit and miss and I often lose too much fine detail.

Gamma is the best bet. Start with printing out a test card image featuring graduated grey and colour barrs, and then experiment with the gamma curves until it prints out as close as the on screen image as possible (you have calibrated your monitor first of course). You can then save this curve for future use.