Monitor

What kind of connection are you using? DisplayPort, DVI, VGA, HDMI? What kind of adapters are in place?

 

You mean a Mini DisplayPort to Mini DisplayPort or Mini DisplayPort to DisplayPort cable or do you mean a Mini DisplayPort to VGA or Mini DisplayPort to DVI or Mini DisplayPort to HDMI adapter?

And since it is not from Apple, is it from another brand you could tell us?

"How to maximise your MacRumors troubleshooting experience" created by mad jew in 2006​

Upon further research I found, that you use an HDTV (High Definition TeleVision), which has 1920 x 1080 pixel stretched to 25.5", which explains the blurriness.
Also know, that TVs are not meant for displaying computer graphics (which are mostly static and consist of text and other small elements) but for displaying moving content (films and such).

If you want a proper computer display, but a dedicated computer display.

To edit your thread title to a descriptive one, to get a knowledgable audience and help making the thread easier to find for people looking for the same information, just click on the button on the bottom right of your original post and then click the button below your message.

 

No, it's a PC Monitor with TV-Tuner and a 1920 x 1200 resolution, so it should be fine. Also the 25.5" in combination with the resolution should not be too blurry.

 

Ah, I only saw HDTV mentioned numerous times on the site I linked to, and the diagonal size, that I though it was a TV.

Hmm, but then again, maybe it is a cheap panel? Who knows, maybe it is the adapter, maybe it is something else, maybe we will found out, but probably we will just go to Mars and beyond.