I had an interesting experience the other night,ever since I have had this Vizio 4K UHDTV delivered I have had my Dish receiver set to 1080i resolution,so the other night I decided to try the 720p resolution setting.
Dish receivers do not have a native pass through and that one feature that I like,when I changed the resolution to 720p the colors in the picture came alive.
Now maybe the reason might be that going to a progressive resolution from an interlaced resolution made the 4K upconversion easier,but what ever the reason I will leave my Dish receiver's resolution setting at 720p for the 4K upconversion.
Dish receivers do not have a native pass through and that one feature that I like,when I changed the resolution to 720p the colors in the picture came alive.
Now maybe the reason might be that going to a progressive resolution from an interlaced resolution made the 4K upconversion easier,but what ever the reason I will leave my Dish receiver's resolution setting at 720p for the 4K upconversion.