Tieno said:
Why don't we see like 45fps games? Or 50fps games? Something to do with TV hz?
Yes, it has to do with the TV refresh rate and
vertical synchronization. On 60Hz displays, a 60fps game will display a different picture at each update. A 30fps game will always repeat the same frame twice, creating a slight choppiness, specially during camera rotating/scrolling.
By the same logic, you can have 20fps games (by repeating the same frame 3 times) and 15fps games (repeat 4 times), with perfect v-sync. Any other number (like 45fps) will require a non-constant number of repeated frames over time (sometimes 3, sometimes 2, for 45), creating extra choppiness if v-sync is on, or will cause screen tearing if v-sync is off (because the TV will always update at 60Hz, and it might display frames that haven't finished updating).
plagiarize said:
60 fps is preferrable still, but there are some games that run at 30 with motion blur that look rather spiffy. dead rising and lost planet are the best examples off the top of my head. not as good as proper 60fps, or indeed, 60 fps with motion blur, but still nothing you'd sniff at.
That's because the more realistic motion blur featured in 360/PS3 games makes the 30fps material look closer to film, either FMV or CGI, which always featured a similar effect. This kind of blur is sometimes called "temporal antialiasing".
Since movies traditionally ran at 24fps, 30fps games look more "cinematic" than 60fps ones (they look like home videos). But since sport broadcasting is done at 60fps, racing (specially F1) and sport games look more "realistic" at 60fps.
Also, the vast majority of the 2D games during the 8-bit and 16-bit era ran at 60fps, so 2D games look strange when running at lower framerates.
On an interesting note, I wrote a motion blur experiment app years ago, in which the framerate was selectable. At 60fps, it was very hard to notice the blur, since the motion between each frame was very small unless the object was moving
real fast.
(unfortunally I lost that app years ago... it'd be an interesting example of 30fps vs. 60fps, with and without blur).
momolicious said:
i think only pc gamers know the difference between 30 and 60fps, console gamers will find out soon.. if they havent already
Oh, but many have. There was this thing called "
Dreamcast", which brought 60fps games yo our home TVs. Hmmm, Crazy Taxi.
And before that, there were these things called "
Arcades", where the vast majority of 3D games ran at butter-smooth 60fps, ruthlessly reminding us our consoles sucked.