Projector problem

Solved
matt0344 Posted messages 132 Status Member -  
matt0344 Posted messages 132 Status Member -
Hello everyone, I just bought a mini LED projector (USB, HDMI, VGA, SD card, TV) entry-level. I have a few questions. Is it better to project onto a wall or a projection screen? Is it normal for it to have lots of small squares on the projection? Let me explain, I adjust the image to make it clear and that’s when the small squares appear; when it’s blurry, there are no small squares. It doesn't stop me from watching a movie, but I would like to remove those small squares; maybe it's because I'm projecting on a wall? Thank you for your help.

21 answers

  • 1
  • 2
  1. matt0344 Posted messages 132 Status Member 10
     
    The projector supplier told me to place it 3 meters from the wall or screen, which I did, and here's what it looks like. I tried moving the projector closer to 1.5 meters, and it's still the same.
    7
  2. glandu Posted messages 25506 Registration date   Status Contributor Last intervention   4 090
     
    Hello, don't expect too much from these small projectors. The squares you see are the pixels (type "pixellation" on the web).
    Bring your projector closer to the wall; a matte white surface is enough. This will reduce the display size and the pixels will disappear.

    --
    "Donkeys change their minds, but fools don't."
    Remember to mark your message as "resolved" if that's the case.
    2
  3. glandu Posted messages 25506 Registration date   Status Contributor Last intervention   4 090
     
    Hello, no, this is not satisfactory at all. Other than getting closer, I see no other solutions; it's the native definition of the projector that is insufficient.

    --
    "Donkeys change their minds, not fools."
    Please remember to mark your message as "resolved" if that is the case.
    2
  4. matt0344 Posted messages 132 Status Member 10
     
    I found this online
    Visible grid matrix (Screendor)

    Description of the phenomenon:
    Perception of the grid of the image, formed by the set of pixels (points) of matrix projectors.
    Also called "screen door effect," this phenomenon is illustrated by seeing the matrix of a projector (Tri-LCD, DLP, SXRD, D-ILA), that is, a grid of the image made up of the pixels. This can be seen if the viewer is too close to the image. The "screendor" is due to the technology used by matrix projectors, and more specifically Tri-LCD, which use 3 pixel matrices. It is the spacing between each pixel that can be perceived as one gets too close to the screen. The higher the resolution of the matrix, the less noticeable the effect will be because there are more pixels of equal size, therefore smaller, thus reducing the spacing between each pixel accordingly.
    1
    1. matt0344 Posted messages 132 Status Member 10
       
      I specify that the projector is brand new, it’s only two days old and the LED has less than 30 minutes of use.
      0
    2. glandu Posted messages 25506 Registration date   Status Contributor Last intervention   4 090
       
      Hello, please give me the reference of your projector and the size of your screen. Move closer to reduce the size of the screen to see if there is an improvement.
      0
    3. matt0344 Posted messages 132 Status Member 10
       
      douself Mini Projector HD 1080p LED Home Cinema AV TV VGA USB HDMI TF Video White
      0
  5. matt0344 Posted messages 132 Status Member 10
     
    So a SD card will be better than USB.
    1
  6. matt0344 Posted messages 132 Status Member 10
     
    Thank you, I brought the projector closer and it's better.
    0
  7. matt0344 Posted messages 132 Status Member 10
     

    here is the quality of the image
    0
  8. matt0344 Posted messages 132 Status Member 10
     
    Ce que je trouve bizarre, c'est que quand l'image est floue, je ne vois pas ses carrés, et dès que je règle l'image pour qu'elle soit nette, les carrés sont là.
    0
  9. matt0344 Posted messages 132 Status Member 10
     
    I brought the projector closer and it's the same.
    0
  10. matt0344 Posted messages 132 Status Member 10
     
    There’s no way to lower the resolution of the image because I’m currently in high?
    0
  11. glandu Posted messages 25506 Registration date   Status Contributor Last intervention   4 090
     
    Hello, at €64, it's a gadget with a resolution of 320x240, look at it with a 40cm screen.

    "Donkeys change their minds, but fools don't."
    Please remember to mark your message as "resolved" if that's the case.
    0
  12. matt0344 Posted messages 132 Status Member 10
     
    Resolution: 320 * 240 pixels
    supported resolution: 1092 * 1080, HD 1080P
    what does this mean?
    0
  13. glandu Posted messages 25506 Registration date   Status Contributor Last intervention   4 090
     
    The accepted films are HD 1920x1080p, but once displayed on the screen, it's more like 320x240 pixels. So enlarge an original image in 320x240 and see the result; you will understand.

    --
    "Donkeys change their minds, but fools do not."
    Please remember to mark your message as "resolved" if that's the case.
    0
  14. matt0344 Posted messages 132 Status Member 10
     
    il n'y a pas moyen de modifier ce 320x240
    0
  15. matt0344 Posted messages 132 Status Member 10
     
    This wouldn't come from the fact that the projector is connected to a netbook, this quality.
    0
  16. glandu Posted messages 25506 Registration date   Status Contributor Last intervention   4 090
     
    The quality of the original source is very important for sure, but we need to test other sources to find out

    "Donkeys change their minds, not fools"
    remember to set "resolved" to your message if that is the case
    0
  17. matt0344 Posted messages 132 Status Member 10
     
    I just tried with USB and the little squares are no longer there.
    0
  18. matt0344 Posted messages 132 Status Member 10
     
    Tu me conseilles quoi, c'est mieux en HDMI, en USB ou en carte SD pour une meilleure qualité ?
    0
  19. glandu Posted messages 25506 Registration date   Status Contributor Last intervention   4 090
     
    The card is the most direct, the HDMI has a better throughput than USB

    --
    "Donkeys change their minds, not fools"
    please remember to mark your message as "resolved" if that is the case
    0
  20. glandu Posted messages 25506 Registration date   Status Contributor Last intervention   4 090
     
    Hello, yes that's my opinion

    --
    "Donkeys change their minds, not fools"
    Please remember to put "resolved" in your message if that's the case.
    0
  • 1
  • 2