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For the TV experts here
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Refresh rate is tied to frame rate. Television broadcasts at 30 FPS (frame per second) and traditional movies are filmed at 24 FPS. When you watch a film on a 60Hz tv it’s trying to fit 24 FPS into a 60 times a second refresh rate. To do this the tv has to up-convert the 24 FPS film to 30fps to display it properly. So it has to process the frames at 3:2 rate to fit 24 into 60, evenly (some frames are flashed 3 times and some are flashed twice). Obviously it doesn’t have to do this for tv as 30 FPS goes into 60Hz, evenly so each frame gets flashed twice.. A 120 Hz doesn’t have this extra step as both 24 and 30 go into 120, evenly (flashed 5 times for 30 and 6 times for 24). You eliminate the extra conversion step and see each frame the same number of times, thus eliminating the blurring effect of a 60Hz tv.1to392831weretaken said:Out of curiosity, why the boner for refresh rate?
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Yeah, I get all that, but he said he watches sports and politics. That's all going to be 30p, so that's why I was asking him. Good information above, though, for others who may be in the market.USMChawk said:
Refresh rate is tied to frame rate. Television broadcasts at 30 FPS (frame per second) and traditional movies are filmed at 24 FPS. When you watch a film on a 60Hz tv it’s trying to fit 24 FPS into a 60 times a second refresh rate. To do this the tv has to up-convert the 24 FPS film to 30fps to display it properly. So it has to process the frames at 3:2 rate to fit 24 into 60, evenly (some frames are flashed 3 times and some are flashed twice). Obviously it doesn’t have to do this for tv as 30 FPS goes into 60Hz, evenly so each frame gets flashed twice.. A 120 Hz doesn’t have this extra step as both 24 and 30 go into 120, evenly (flashed 5 times for 30 and 6 times for 24). You eliminate the extra conversion step and see each frame the same number of times, thus eliminating the blurring effect of a 60Hz tv.1to392831weretaken said:Out of curiosity, why the boner for refresh rate?
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My guess? All inputs (on a 60Hz tv) are sent through the processor, regardless of 24 or 30 FPS. If so, it’s still an additional processing step. Or, it could just be new and improved technology on a 120 Hz and 240 Hz TVs.1to392831weretaken said:
Yeah, I get all that, but he said he watches sports and politics. That's all going to be 30p, so that's why I was asking him. Good information above, though, for others who may be in the market.USMChawk said:
Refresh rate is tied to frame rate. Television broadcasts at 30 FPS (frame per second) and traditional movies are filmed at 24 FPS. When you watch a film on a 60Hz tv it’s trying to fit 24 FPS into a 60 times a second refresh rate. To do this the tv has to up-convert the 24 FPS film to 30fps to display it properly. So it has to process the frames at 3:2 rate to fit 24 into 60, evenly (some frames are flashed 3 times and some are flashed twice). Obviously it doesn’t have to do this for tv as 30 FPS goes into 60Hz, evenly so each frame gets flashed twice.. A 120 Hz doesn’t have this extra step as both 24 and 30 go into 120, evenly (flashed 5 times for 30 and 6 times for 24). You eliminate the extra conversion step and see each frame the same number of times, thus eliminating the blurring effect of a 60Hz tv.1to392831weretaken said:Out of curiosity, why the boner for refresh rate?
