setting up wallpaper for imac dual display

hi,

time of dimensions wallpaper can use monitors.

imac 2011 21.5 inch, 1920x1080 - 23 inch led monitor.

 

start out setting wallpaper @ 3840 x 1080 (1920 x 2).

use photoshop (or whatever use image editing) split image in half have 2 1920 x 1080 images, 1 each monitor.

edit: here's older walkthrough on dual displays - http://smokingapples.com/opinion/using-dual-displays-on-mac-os-x-the-experience/

 

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