I appreciate that for exporting to a retina iPad to get best picture you are supposed to use a preset of “to fit within 2048 x 2048 pixels at 264 dpi.
What should the settings be with a 4k tv please.
I appreciate that for exporting to a retina iPad to get best picture you are supposed to use a preset of “to fit within 2048 x 2048 pixels at 264 dpi.
What should the settings be with a 4k tv please.
Theoretically 4096 x 4096.
Thomas
Thanks - that’s what I thought. BUT…… I compared photos exported. With these settings:
1. 800 x 1200 at 300 dpi
2. 4000 x 3000 at 240 dpi
3. 8000 x 6000 at 240 dpi
I could see no difference on screen so what is going on here? Is the important thing the dpi figures I have used? A 4K tv that is say 40” wide and had 4000 pixels would have 4000\40=100 dpi and since the files are at dpi greater than 100 then this is controlling the picture quality at maximum however many pixels I used in the set up before exporting?
Clearly I am probably confusing myself and don’t have an adequate understanding of what is needed!
Gordonhbm
Current generation Apple TV doesn’t support 4k output?
Btw, dpi doesn’t mean anything when you have the picture size defined by number of pixels.
Kodura
Thanks for your response. The photos were exported to a usb memory stick so Apple TV not involved. So I am left puzzled still. Can anyone offer any further guidance please?
Gordonhbm
This is a complex topic, one that needs thorough reading in order to understand what a pixels and dots per inch mean, how they compare in the industry (print, computer screen vs TV) so a couple of links should get you going. One thing to take not of is that computer screen pixels are usually/mostly square and pixels on a TV are rectangle.
http://en.wikipedia.org/wiki/Pixel
http://en.wikipedia.org/wiki/Image_resolution
http://en.wikipedia.org/wiki/Dots_per_inch