Results 1 to 4 of 4

Thread: Digital Projectors

  1. #1
    Hardcore Til I Die htid's Avatar
    Join Date
    Mar 2006
    Location
    London
    Posts
    1,802
    Thanks
    81
    Thanked
    32 times in 22 posts
    • htid's system
      • Motherboard:
      • Asus P5B
      • CPU:
      • C2D E6600 @ 3ghz
      • Memory:
      • 2gb Corsair XMS2
      • Storage:
      • 180gb Spinpoint
      • Graphics card(s):
      • XFX 7900GTX
      • PSU:
      • 500W Seasonic S12
      • Case:
      • Akasa Mirage
      • Monitor(s):
      • 18" Dell

    Digital Projectors

    Right so the thing is this: My dad is a member of a camera club and they are thinking of getting a digital projector. The thing is ones such as this from Dell has, as you see "Native SVGA (800 x 600) resolution", but my dad wants to know then, is this:

    If someone takes a picture at say 11megapixels (around 4064 x 2704) is it a waste of time since they projector only does 800x600 anyway? Will a 3mp 2048 x 1536 be the same as the 11mp since the projector cant even project above 800x600 anyway?

    This guy seems to think its a myth, but i guess he's talking about printing rather than about projecting.

    Anyway does anyone know anything much about this subject to give me some insight?

    TIA
    Chris.

  2. #2
    Does he need a reason? Funkstar's Avatar
    Join Date
    Aug 2005
    Location
    Aberdeen
    Posts
    19,874
    Thanks
    630
    Thanked
    965 times in 816 posts
    • Funkstar's system
      • Motherboard:
      • Gigabyte EG45M-DS2H
      • CPU:
      • Intel Core2Quad Q9550 (2.83GHz)
      • Memory:
      • 8GB OCZ PC2-6400C5 800MHz Quad Channel
      • Storage:
      • 650GB Western Digital Caviar Blue
      • Graphics card(s):
      • 512MB ATI Radeon HD4550
      • PSU:
      • Antec 350W 80+ Efficient PSU
      • Case:
      • Antec NSK1480 Slim Mini Desktop Case
      • Operating System:
      • Vista Ultimate 64bit
      • Monitor(s):
      • Dell 2407 + 2408 monitors
      • Internet:
      • Zen 8mb
    no you are right. it is simple if you keep everything in the digital domain, then a pixel is a pixel.

    The PC will be scaling everything down to 800x600, so it is really how well that is done that is going to make the differnce. What are you going to use, software wise, to display on the projector?

    It might be worth scaling them down in something like Photoshop first so that windows (or whatever) doesn't add any jaggies when it does a bad job of displaying it at 800x600.

    EDIT: Actually there is a possible benefit from the 11MP camera. If it is generally a better camera, you may well be getting better and more accurate colours from it compaired with the 3MP camera (for example if the 3MP camera was a £100 compact and the 11MP was a DSLR). HOWEVER, if the 3MP camera is old but very good and the 11MP camera is new but a no name cheap pile of junk, iæd use the 3MP one instead
    Last edited by Funkstar; 26-08-2006 at 09:41 PM.

  3. #3
    Hardcore Til I Die htid's Avatar
    Join Date
    Mar 2006
    Location
    London
    Posts
    1,802
    Thanks
    81
    Thanked
    32 times in 22 posts
    • htid's system
      • Motherboard:
      • Asus P5B
      • CPU:
      • C2D E6600 @ 3ghz
      • Memory:
      • 2gb Corsair XMS2
      • Storage:
      • 180gb Spinpoint
      • Graphics card(s):
      • XFX 7900GTX
      • PSU:
      • 500W Seasonic S12
      • Case:
      • Akasa Mirage
      • Monitor(s):
      • 18" Dell
    Thanks funkstar. Well the camera isn't actually 11mp i just used that as an example. Real world it was about comparing a generic 3mp camera to the 8mp canon 30D. I'll just have to tell all the people at the club to scale them down to 800x600 on photoshop.

    Cheers again

  4. #4
    Does he need a reason? Funkstar's Avatar
    Join Date
    Aug 2005
    Location
    Aberdeen
    Posts
    19,874
    Thanks
    630
    Thanked
    965 times in 816 posts
    • Funkstar's system
      • Motherboard:
      • Gigabyte EG45M-DS2H
      • CPU:
      • Intel Core2Quad Q9550 (2.83GHz)
      • Memory:
      • 8GB OCZ PC2-6400C5 800MHz Quad Channel
      • Storage:
      • 650GB Western Digital Caviar Blue
      • Graphics card(s):
      • 512MB ATI Radeon HD4550
      • PSU:
      • Antec 350W 80+ Efficient PSU
      • Case:
      • Antec NSK1480 Slim Mini Desktop Case
      • Operating System:
      • Vista Ultimate 64bit
      • Monitor(s):
      • Dell 2407 + 2408 monitors
      • Internet:
      • Zen 8mb
    I would definitely use the 30D then

    Another thing. Make sure that if the projectors maximum native resolution is 800x600 thats what the PC is giving it. A lot of projectors will take a higher resolution signal and scale it down to its native resolution, and do a very bod job of it in the process.

Thread Information

Users Browsing this Thread

There are currently 1 users browsing this thread. (0 members and 1 guests)

Similar Threads

  1. How Digital Audio works
    By Lowe in forum Audio Visual
    Replies: 23
    Last Post: 12-04-2013, 09:16 AM
  2. Replies: 0
    Last Post: 28-02-2006, 12:09 PM
  3. Replies: 3
    Last Post: 24-10-2005, 05:39 PM
  4. MiniDisc deck to PC - digital audio recording?
    By DsW in forum Consumer Electronics
    Replies: 8
    Last Post: 25-06-2005, 12:37 PM
  5. Is this a digital TV?
    By ajbrun in forum Consumer Electronics
    Replies: 22
    Last Post: 29-12-2004, 08:27 PM

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •