Hi,
Here are some tips to help improve picture clarity:
1) HDMI cables are recommended for optimal HD viewing.
2) If you have an analog cable box or satellite box, upgrade to a digital cable box or satellite box.
3) Change the output resolution of your devices, such as digital broadcast receivers, IPTV, and set-top boxes, to UHD or HD.
4) You can further adjust your sharpness, brightness, contrast, color, and more by going to Settings > All Settings> Picture > Expert Settings
5) Choose a Picture Mode by going to Settings > All Settings> Picture > Picture Mode and choose from Dynamic, Standard, Natural, Movie, or Filmmaker Mode.
6) For optimal motion image performance, you may want to adjust the picture clarity setting by going to Settings > All Settings> Picture > Expert Settings > Picture Clarity Settings.
~Samsung Advisor