How To Zoom In and Out On A Mac
I'm sure this is known by many and has been posted before - but for those of you who want to zoom in on your entire screen just hold down "shift" and scroll if you're using a mouse, I presume the two-finger scroll on the trackpad of laptops works as well.
That's not how I do it and that doesn't work for me.
1. Open system Preference
2. Click on System ->Universal Access Preference
3. Seeing Pane Click on Zoom: On radial button OR Command+Option+8 from outside the preferences
4. Click on Zoom Options...
5. Move sliders for Max & Min Zoom to the number 2
6. Below check ONLY the middle option Smooth images
7. Bottom set When zoomed in, the screen image moves: Only when the pointer reaches an edge
8.DONE Close preferences
9. When you want to zoom in simply press Command + Option simultaneously, then press the + (plus) key to zoom in and the - (minus) key to zoom back out. You get a certain level of zoom first then you can incrementally go further in and out pressing + or - (immediately left of the delete key).