Several recent threads have left my brain hurting. A related question to that: I am getting ready to get a scanner and start digitizing slides, and the ones I am looking at seem to have different options regarding file resolution. I think I am getting the hang of printing but most of these are going to go in a flash drive and then into my tv (HD, 1080p) for family time. What output resolution should I use for this? The larger resolutions result in humungous file sizes, and undoubtedly are larger than the tv resolution. So does the tv have to downres the larger files to fit? Not sure how that works.
THanks.

Well this is very interesting, however this isn't what I was hoping for, I’m planning to do some water drop photography, for the process I'm using you take the photos in the dark, so your camera is set in B (bulb) and the flash is controlled to get the water drop bouncing. as we all know most of us can't see in the dark, meaning you have to fumble around with the controls on the timer, I was hoping that using a safe light would allow me to work in the dark, with just enough light that wouldn't disturb this method of water drop photography.. however Darkroom317 points out that he did use a high ISO and his shutter was open for a long time, the water drop photos I plan to take only use a fraction of a second of open shutter and a flash to catch the bounce, this is something I’m going to have to play with,
Thanks to those that replied, thanks Bebulamar for the info, maybe there’s color we can see but the camera can’t detect as easy as we can, (think I’m kidding myself) thanks for the photo from darkroom317, I’m going to give it a shot and just see what I get, playing and learning is why most of us are here ? it’s not like I’m wasting film right … thanks again Phil.

You may want to do an experiment before you before you add to this post. I recall a few years back there was an article on this subject and the writer took a photo which he had taken of a street scene with a telephoto lens. There were buildings along both sides of the street with buildings going up a hill stacked in the distance. It certainly looked like the buildings were compressed together. But then he took a shot with a wide angle lens and enlarged a section to show the exact scene as taken with the telephoto. The photos looked the same. So is compression real, or just a matter of the way we look at a photo.