Samsung SA350 display with Macbook Pro 13" Retina

Hi Guys,
Please can someone help me. I have a problem with the quality of the picture on my external screen. I know there have been many posts on this and I have read a number of them but none of them seem to help me.
The display is not clear and crisp. I notice it in e.g. GMail where I cannot see the dividing lines between the emails and the borders of buttons are not visible.
I have tried the following:
- Manaually set resolution
- VGA through thunderbolt
- Straight HDMI
- Upgraded firmware on the monitor
I am not sure what to do. It worked fine on my Windows Dell laptop.
Please please can someone help (if possible). Thanks.

Hi Zinzaba,
I had the exact asame issue with this monitor, and an LG monitor. The only solution I could find was to download a free application called Dimmer. Once it's installed, you'll see a little light bulb icon in the menu bar, click it, and move the brightness down.
It looks to me like the brightness is way too high, even on the lowest settings. Either that, or a problem with gamma settings.

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