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Thread: Mouse travel distance in same resoulution vs different screen size

  1. #1
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    Default Mouse travel distance in same resoulution vs different screen size

    me & minitt had a debate. When i played starcraft II yesterday at his home on his big size 47" TV. i felt the mouse response was quite less compared to my 24" led monitor.
    Now u guys pls help us determine who is correct:
    My theory:
    Within same resolution +same mouse u need different dpi for different screen sizes for faster mouse response.
    in detail what i tried to mean is, despite the same resolution if the screen size is big the surface area becomes bigger also. so, moving mouse from one point to another point inside the actual screen becomes less responsive in bigger screen.

    Minitt's theory:
    Within same resolution + same mouse u do not need different dpi for different screen sizes for faster mouse response.
    ask him for his explanation.
    those who plays fps/strategy are welcome to participate in the debate & share ur experience.
    Last edited by minitt; May 10th, 2015 at 16:47.

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    I believe the following is true

    Same Mouse, Same resolution (1920x1080)

    24" (1920x1080) screen's surface area = 47" Screen Surface area (1920x1080)

    which means the mouse will travel the same amount of pixel for a given movement distance in either case.

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    Minitt bhai has it right.

    For FPS games, moving in the 3D world(360 view) is measured in angles. The FOV(field of view) is dependent on the resolution and ultimately the aspect ratio. 16:9 gives more FOV compared to 4:3. When two people have the same mouse/DPI/surface area and ingame settings, the screen size doesn't matter, you will still be moving the same distance when swiping the mouse. But what you perceive might be different.

    This ofcourse I'm talking about with CS(Counter Strike) in mind, after years of tinkering with sensitivity/resolutions and all that. I don't know if starcraft uses a different system. For majority of the FPS games, the sensitivity/movement is based on angles of the 3D world. No matter what mouse you have, you'll still be moving in angles out of 360 and restricted by FOV.

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    i think what you were feeling was input lag!

    most monitors have ~10ms input, where as LED TVs have 18~44+ms.... in your case, i guess, minitt bhai's tv has ~24ms input lag.... that's why you felt the mouse to be less responsive....

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    Quote Originally Posted by giant View Post
    i think what you were feeling was input lag!

    most monitors have ~10ms input, where as LED TVs have 18~44+ms.... in your case, i guess, minitt bhai's tv has ~24ms input lag.... that's why you felt the mouse to be less responsive....
    Input lag doesn't matter here I guess, because you are still moving the mouse and covering the same distance ingame(in radians). What input lag might do is make your ingame movements incorelation to your mouse movements feel disconnected.

    Also most normal monitors have input lag in the range of 30-40ms, LED TVs are more notorious in this regard and has way more input lag. Talking about 50ms+. If you need 5-10ms you need 120Hz+ monitors.

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    Quote Originally Posted by giant View Post
    i think what you were feeling was input lag!

    most monitors have ~10ms input, where as LED TVs have 18~44+ms.... in your case, i guess, minitt bhai's tv has ~24ms input lag.... that's why you felt the mouse to be less responsive....
    yah input lag could be a thing if he says bigger screen size with same resolution has more surface area. Something i dont agree with.

    - - - Updated - - -

    Quote Originally Posted by giant View Post
    i think what you were feeling was input lag!

    most monitors have ~10ms input, where as LED TVs have 18~44+ms.... in your case, i guess, minitt bhai's tv has ~24ms input lag.... that's why you felt the mouse to be less responsive....
    my screen has 16 - 17ms input latency. quite good for HDTV.

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    AFAIK monitor resolution matters in games without raw input whereas in games with raw input mouse DPI plays all the factor. That's why most new FPSs have raw input. But IDK if 47" TVs got bigger dots per resolution or something

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    Quote Originally Posted by Sybaris Caesar View Post
    AFAIK monitor resolution matters in games without raw input whereas in games with raw input mouse DPI plays all the factor. That's why most new FPSs have raw input. But IDK if 47" TVs got bigger dots per resolution or something
    each pixel size is bigger but total number of pixel is same compared to a smaller screen that has the same resolution.

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    Since the pixel count is same I think minitt bhai's theory is correct. The apparent less responsiveness might be due to perception, since you're used to a much smaller screen.

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    Quote Originally Posted by minitt View Post
    each pixel size is bigger but total number of pixel is same compared to a smaller screen that has the same resolution.
    This sounds more logical because the computer or the software doesn't know how big your monitor/TV is. All it knows is the pixel count. So logically, if the resolution is same, then same dpi mouse should feel same.
    I mean if you need to move your mouse one inch to go from one end to another end of a 21" 1080P monitor, then you'll need to move your mouse exactly same distance to move your cursor from one end to another end of a 47" 1080P monitor.

    I don't have any practical knowledge though. But I believe this is how it works.

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    I wonder if somehow the OS gets the knowledge of the display PPI and adjusts according to that. But with mouse acceleration off and windows mouse sensitivity set at the middle point that should not happen.

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    2nd one is correct. mouse can only recognise pixels and pixels are the smallest element in a display device. that means it is impossible to address multiple points within a same pixel or you can't move your cursor within a single pixel. us usually on a bigger screen(with same res) cursor movement won't be that smooth despite having same response time.
    Last edited by @nonymous™; May 11th, 2015 at 04:58.

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    Minitt is correct.

    You do have a 144hz monitor and if the TV was a standard 60hz, then responsiveness will be drastically different. Since the resolution is the same, the same amount of pixels will be moved as the mouse is moved, the mice cannot distinguish between the TV and the PC, so it's functions will remain exactly the same.

    Also, if the TV is 120HZ but if it's interpolated and not true 120HZ, then it will feel different too.

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    @Speed amar treat koi???!

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    well, i do not know if u people r getting the bigger picture or not. another thing i want to clarify is i am NOT talking about display setting DPI. I am talking about the mouse dpi setting u get to set within the mouse software.
    regarding the hz setting. personally speaking. the hz setting just makes u feel the mouse or between window switching much smoother compared to standard 60hz monitors/tv. what i felt @minitt 47" fat ¤¤¤ thing was completely different. in theory the dpi setting changes the mouse movement from point to point. now let's compare with real life scenario. imagine dpi as the human walking speed & the monitor/tv screen is some open land or a play field. now u guys tell me if it's really possible for a avg 7.8km/h man to cross a 24 sqrmtr of field (diagonally or point to point doesn't matter here) will take LESS or MORE time comparing to crossing a 47 sqrmtr of field.

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    Maaf chai!! Never saw such ajgubi analogy!! U won. Amar treat lagbe na!

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    Quote Originally Posted by Speed View Post
    in theory the dpi setting changes the mouse movement from point to point. now let's compare with real life scenario. imagine dpi as the human walking speed & the monitor/tv screen is some open land or a play field. now u guys tell me if it's really possible for a avg 7.8km/h man to cross a 24 sqrmtr of field (diagonally or point to point doesn't matter here) will take LESS or MORE time comparing to crossing a 47 sqrmtr of field.
    You know, you are right
    Except that the mouse doesn't know how many "km" is there in between two point in a display.
    It knows how many pixels are ther in between to points.

    DPI means dot-per-inch. For displays, it implies pixel-per-inch.
    So it doesn't matter whether the display is 19" or 47", the mouse knows that the play field is 1980px width and 1080px in height.

    Now consider the following two scales.
    If you can walk one inch per second, how long will it take to go to the other end?
    The ans is 9s for both of the scales. because "an inch" is smaller in the first scale.
    Click image for larger version. 

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    IDK if @Speed 's theory's right or not but I've got this nagging feeling it is. Does the "dots" in DPI really mean pixels? If then shouldn't a definite mouse travel (maybe an inch) move the in-desktop cursor further in 47" panel than a 24" one since at the same resolution the 47" panel would house bigger pixels? But to clarify @Speed are you talking about mouse response or mouse travel distance?

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