ZL screen brighter than Z
The ZL I had was not final software so things could change with it. Looking at photos on each device closely the Z is much darker than the ZL (talking screen brightness here). I didn't try changing the ZL to match the same level as the Z so I couldn't really compare the colors on each when looking at photos. The Z was noticeably darker on photos.
I didn't mess with the white alliance colors either on the ZL just left them as they were which showed 0 on each slider.
When comparing system menus and icons colors I couldn't really tell much of a difference.
Lumia 920 // Xperia Z // Xperia TL // Xperia ion // Xperia P // iPad 3
Sony Smartwatch // Sony Smart Wireless Headset pro // Sony LiveDock™ // Xperia ion Smartdock
iPhone 1st Gen/3GS/4S // Nexus One // Dell Streak // Atrix 4g // Xperia Play // Lumia 900 // Xperia S // iPad 1
Click here for my Xperia firmware downloads.
Thanks button if I helped.