60Hz- annoying

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mordantmonkey

Diamond Member
Dec 23, 2004
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I've heard that people can't detect any difference above 30fps. But I can distinctly detect a slight "flashing" when my monitor is at 60Hz. If i change it to 70hz or higher it goes away. I noticed this on a co-workers brand new monitor as well. Of course i only notice when there is a lot of white(spread sheet) or light colors on the screen.

am i crazy?:confused:
 
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spidey07

No Lifer
Aug 4, 2000
65,469
5
76
no, somepeople are sensitive to it I believe.

I can sense the flicker in florescent (sp?) bulbs.
 
spacejamz

spacejamz

Lifer
Mar 31, 2003
10,970
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LCD FTW!!!! (all 3 of mine run at 60HZ)...

pretty sure the OP is talking about CRT monitors...
 
dullard

dullard

Elite Member
May 21, 2001
26,060
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Suppose, you were sensitive at 30 Hz. Then you'd see flickering below 30 Hz. But you'd also see flickering at all multiples of 30 Hz. You'd have problems at 60, 90, 120, 150 Hz, etc. Simply because you have problems at 60 Hz doesn't mean you see at or greater than 60 Hz - a very common logic mistake that people make.
 
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trmiv

Lifer
Oct 10, 1999
14,670
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I'm very sensitive to it, it gives me a headache quickly. I do desktop support, and often when I go to people's machines they will have it set to 60Hz on their CRT. Usually I'll ask if they get headaches while at work, or their eyes get really tired, the answer is almost always yes. So I'll set it up to 85 Hz for them. Most non-technical users have no idea what refresh rate is, or why they get tired eyes/headaches at work so easily.
 
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mordantmonkey

Diamond Member
Dec 23, 2004
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wow, i had no idea. never heard anyone discuss this before. good to know.

and though LCD have refresh rates, they don't constantly refresh like CRT's though, right?
 
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Electric Amish

Elite Member
Oct 11, 1999
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Originally posted by: mordantmonkey
wow, i had no idea. never heard anyone discuss this before. good to know.

and though LCD have refresh rates, they don't constantly refresh like CRT's though, right?
Click to expand...

I believe they refresh on a per-pixel basis (or maybe per line?)...but I could be wrong.
 
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mordantmonkey

Diamond Member
Dec 23, 2004
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Originally posted by: dullard
Suppose, you were sensitive at 30 Hz. Then you'd see flickering below 30 Hz. But you'd also see flickering at all multiples of 30 Hz. You'd have problems at 60, 90, 120, 150 Hz, etc. Simply because you have problems at 60 Hz doesn't mean you see at or greater than 60 Hz - a very common logic mistake that people make.
Click to expand...

it is illogical to assume that you would detect all multiples of thirty. It more has to do with the fact that you can detect, even if only slightly the instance of "darkness" between refreshes. If you multiplied the refresh rate it would make the "dark" time shorter and thereby possibly undetectable.
either way i don't really want to try to run this thing at 12o just to prove a hypothesis.
 
MiniDoom

MiniDoom

Diamond Member
Jan 5, 2004
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Originally posted by: PurdueRy
Originally posted by: rdubbz420
Originally posted by: Electric Amish
Originally posted by: InlineFour
Originally posted by: spacejamz
LCD FTW!!!! (all 3 of mine run at 60HZ)...

pretty sure the OP is talking about CRT monitors...
Click to expand...

LCDs don't have refresh rates.
Click to expand...

Yes they do.
Click to expand...

no, they've got pixel response time.
Click to expand...


they also have refresh rates
Click to expand...

if you say so.
 
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SaturnX

Diamond Member
Jul 16, 2000
3,415
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Anything under 85 starts to irritate me. Also regarding the 30fps statement. I believe that is referring to fluid motion. Meaning that if you watch a movie at 40fps, or 30fps it will still look fluid and smooth and you won't be able to distinguish the two.

--Mark
 
Dead3ye

Dead3ye

Platinum Member
Sep 21, 2000
2,917
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Originally posted by: trmiv
I'm very sensitive to it, it gives me a headache quickly. I do desktop support, and often when I go to people's machines they will have it set to 60Hz on their CRT. Usually I'll ask if they get headaches while at work, or their eyes get really tired, the answer is almost always yes. So I'll set it up to 85 Hz for them. Most non-technical users have no idea what refresh rate is, or why they get tired eyes/headaches at work so easily.
Click to expand...

What he/she said.

 
dullard

dullard

Elite Member
May 21, 2001
26,060
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Originally posted by: mordantmonkey
it is illogical to assume that you would detect all multiples of thirty. It more has to do with the fact that you can detect, even if only slightly the instance of "darkness" between refreshes. If you multiplied the refresh rate it would make the "dark" time shorter and thereby possibly undetectable.
either way i don't really want to try to run this thing at 12o just to prove a hypothesis.
Click to expand...
Ok, maybe ALL was too strong. How about all reasonable multiples? If you saw at 30 Hz, then you'd see half the darkness at 60 Hz, 1/4th at 120 Hz, etc. So yes it would diminish. But I don't know of any monitors that go any higher so I assumed it would be obvious that we don't need to consider higher rates.

I'm just stating that it is a common misconception that since you have trouble with 60 Hz that your eyes can see at 60 Hz.
 
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Electric Amish

Elite Member
Oct 11, 1999
23,578
1
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Originally posted by: rdubbz420
Originally posted by: PurdueRy
Originally posted by: rdubbz420
Originally posted by: Electric Amish
Originally posted by: InlineFour
Originally posted by: spacejamz
LCD FTW!!!! (all 3 of mine run at 60HZ)...

pretty sure the OP is talking about CRT monitors...
Click to expand...

LCDs don't have refresh rates.
Click to expand...

Yes they do.
Click to expand...

no, they've got pixel response time.
Click to expand...


they also have refresh rates
Click to expand...

if you say so.
Click to expand...


Pixel Response time is completely different from refresh rate. Pixel Response Time is a measurment of how quickly a pixel will respond to a change of color. Refresh rate is referring to the entire screen.
 
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TitanDiddly

Guest
Dec 8, 2003
12,696
1
0
Originally posted by: mordantmonkey
I've heard that people can't detect any difference above 30fps. But I can distinctly detect a slight "flashing" when my monitor is at 60Hz. If i change it to 70hz or higher it goes away. I noticed this on a co-workers brand new monitor as well. Of course i only notice when there is a lot of white(spread sheet) or light colors on the screen.

am i crazy?:confused:
Click to expand...

60hz drives me nuts. I have to change to 75+ on CRTs.
 
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AdamSnow

Diamond Member
Nov 21, 2002
5,736
0
76
On a CRT, I have to have it set at a minimum of 90 or I can see it... annoys me to no end.

I too, notice a flicker in florescent bulbs... :(
 
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