780p vs 780ppi

[Troy Crayson]

These are virtually the same statistic right? "pixels per inch" ? If thats so, how come on my phone (Galaxy S3) with a PPI of just over 300, i have to shove my face right into the screen to be able to distinguish one pixel. But on a 780p TV screen the pixles are obvious at like 2 feet. ?

 

[legend001523]

well no, cause tv screens have a bigger surface area, so your phone has same pixels PER INCH , BUT SMALLER SURFACE AREA, but a tv has A BIGGER SURFACE AREA so there are more inches squared, hence more pixels, you may be getting mixed up with resolution

Misunderstood question, so bad.

But resolution is 1280x720, that equates to 921600 pixels for a 32 inch tv, whereas 780ppi, is a lot more basically

 

[Kari]

720p is resolution, ie the screen has that many pixels on the vertical direction. 780ppi would be insanely high pitch with 780 pixels per inch...

edit the 'p' in 720p means progressive, vs 'i' meaning interleaved, the whole picture refreshes itself at once vs only every other line per refresh cycle.

 

[maxiim]

well no, cause tv screens have a bigger surface area, so your phone has same pixels PER INCH , BUT SMALLER SURFACE AREA, but a tv has A BIGGER SURFACE AREA so there are more inches squared, hence more pixels, you may be getting mixed up with resolution

PPI is pixels per inch, so a 1080p 5inch display is going to have extremely high PPI, whereas a 42inch TV at the same 1080p resolution will have a much much lower PPI because of the surface area of the display. Think of monitors, 1920x1080 looks pretty good on a 24inch display, but put it next to a 27inch or a TV with the same resolution but much bigger screen and you will start to see how worse and worse it looks because the pixels per inch are dropping and the pixels themselves are bigger and more noticeable.

 

[Troy Crayson]

Gah remind me to google before I post. Normally I do, but somehow i jumped the gun on this one. Consider this closed. (now im off to find out how to convert "Sines per Frame" to "Pixiels Per Inch".

 

[Troy Crayson]

Wow thanks for the quick responses. Between the time it took me to post the above "sorry" post and the time i hit post, there was many responses. (ill up vote everyone)