Wow I think I have almost nailed this, by far renderosity is the most helpfull forum I have ever come across... replys are almost as quick as google!

What is the panorma of that you are stiching together?..... sounds amazing!

I say I think I have got it, but still a little confused about the fact in the render dimensions section there is the ability to change dimensions and ppi.

But also in render settings, which is always the option I use for rendering final image (I never use the "render now" option because I have no idea where the PC saves it to) there are dimension settings but no option to change the ppi.

Will there be conflicts if I have dimensions set differently in both windows eg render dimensions set to 1000 x 1000 and 300 ppi in "render dimensions" window & in "render settings" 3000 x 3000.

When doing a non animated still image I use render settings usually tick smoothing and displacement and hdri "make movie" and select output to image, I then export  these png images to photoshop. Am I doing this correctly ?