any difference between 720p and 1080i?

[martynh]

Wondering if there is any visual difference between these 2 settings, my PS3 has picked up that my TV will display upto 1080i but I was wondering if 720p would be better, what with one being interlaced the other progressive?

 

[David]

depends if it's upscaling from 720p res or actually is downscaling to 1080i or if your tele scales it up or down. McBunny will know most i imagine

 

[oska]

I generally stick to 720p. On Rainbow Six Vegas there was quite a difference with 1080i being worse. That was on a 32" so a 40" may improve it, dunno!

 

[KDF]

720p is better than 1080i

 

[FiXX]

it depends what your sets native resolution is, most likely 720p 1080i isnt really inferior, but you may notice slight ghosting or the like during fast moving scenes

 

[oska]

A 720p signal is made up of 720 horizontal lines. Each frame is displayed in its entirety on-screen for 1/30th of a second. This is know as progressive scan (hence the 'p')The quality is like watching 30 photographic images a second on TV. A 1080i signal comprises 1080 horizontal lines but all the lines are not displayed on-screen simultaneously. Instead, they are interlaced (hence the 'i'), ie every other lines is displayed for 1/60th of a second and then the alternate lines are displayed for 1/60th of a second. So, the frame rate is still 30 frames per second, but each frame is split into two fields, which your brain then puts together subconsciously.Most of the time interlacing works fine, but for fast moving images, such as sports like baseball and hockey it can cause problems which manifest themselves as a 'stepping' effect on-screen. Progressive scan signals don't have this problem and so are better suited to sports.

Got this from somewhere, may help. Explains FiXX's reply above in a bit more depth.

 

[martynh]

Cheers guys.

Will change my options on my PS3 so it only outputs to 720P.

 

[McBunny]

best way to do it is on your screens native resolution

for most its 720p

oh and lcd's are progressive by nature they dont do interlaced

 

[Lynk]

if it has the option, use 1080p

 

[McBunny]

if it has the option, use 1080p

only if teh tv is nativly 1080p otherwise DONT !!