Okay a question probably for Arthur, but I dread the million word answer.
I have a Chromecast thingy and let me say it was easy to connect and cast to, but it seems that I can't get it to cast in a high enough definition/resolution. I want to cast a photo slideshow, either from an Android phone, or a Win 10 laptop. So, I have a number of apps on the android phone, but even though the images are 1920x1080 pixels, they look like excrement, even when cast to my Samsung monitor which I use to edit my photos on. This is 26 inches and 1920x1080. I've just bought a TEAC High Defintion 32 inch TV, as I haven't had a TV since we went digital here. Haven't missed it either. It is a 1366x768 resolution screen but says it will take images up to 3000 pixels. None of the images displayed look anywhere near as good as the screen on my Motorola MotoE2 phone.
Does anybody know what the secret is to getting a really sharp HD image over a Chromecast device?