Thansk Grant - to be clear, I've never said I had an issue with 'finder'. I can change icon size fairly easily in Finder.
The issue is that when I'm selecting which images I want to attach to an email, they show as tiny 80px wide icons on my screen. There is no slider or increase size option so that I can see the images more clearly before selecting them. (I know they get sent full size - that's not the question)
Changing the icon size in Finder (as someone suggested) does not alter the size of the icons I'm offered when I want to choose which file to attach.
Cmd+ doesn't do anything other than beep at me (it works elsewhere - just not in 'attach file' mode). This makes selecting the correct image virtually impossible without a magnifying glass.
I have used the link I mentioned to alter the standard size of the icon now - so I have solved the problem.
https://community.adobe.com/t5/photoshop-ecosystem-discussions/increasing-size-of-thumbnails-for-mac/m-p/12128678
But it amazes me that my Macbook pro doesn't have the (pretty basic and essential imho) ability to alter the 'view size' of images when I'm selecting which ones I want to add to an email.
So I'm now stuck with icons that are fixed at 256px rather than 80px - much better, problem solved.
But it doesn't take away the fact that, on my studio PC, I can vary the size of the icons at will, with a single keystroke, whereas my Macbook Pro seems to require third party software and delving about in the depths of the OS to do it. Bizarre.
