component vs hdmi

Discussion in 'Projectors, Screens & Video Processors' started by crackazz, Mar 27, 2006.

  1. crackazz

    crackazz
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    Just been reading the review on cine4home regarding the Z4 and saw these screen shots

    By analogue playback, the factory preset "0" is too high with resulting edge halos. By lower settings, these halos disappear without diminishing the dynamics in the finer details. In this area, a weakness of the predecessor has been improved..

    [​IMG]

    only minimal edge halos (highly enlarged)


    Digital

    As expected, the results from digital playback were even better. Halos were nowhere to be seen.

    [​IMG]


    my question is, does using a hdmi cable and giving the pj a digital signal improve the white that much? or is it just really the clarity of the image that improves. Never had the chance to try it thats all :)
     
  2. Peter Parker

    Peter Parker
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    In theory you should be able to use a calibration disk like DVE and the blacks and whites should all look the same afterwards (espeacially the blacks). I think the whites can sometimes vary depending on how the pj handles digital and analogue signals though.

    Gary
     
  3. Oakleyspatz

    Oakleyspatz
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    Is it just me , or can i still see edge halos on the HDMI image?
     
  4. crackazz

    crackazz
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    thanks for that!

    is it right that the only good test card for setting up contrast/brightness on a lcd pj is the white / black ramp which has wtb on top and bottom going opposite directions.

    I remember reading it somewhere ?!?
     
  5. Peter Parker

    Peter Parker
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    I can see slight haloing too. :)

    There's a sticky at the top of the page 'basic projector calibration', and that will help, though I would use the SMPTE or PLUGE patterns to set the levels.

    Read through and it should tell you what to look for in each pattern.

    Gary.
     
  6. Kalos Geros

    Kalos Geros
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    I must admit I was horrified by the HDMI link of the Samsung HD950 to a Sony Bravia LCD TV...a guy that I know works in a AV shop so we spent some time testing HDMI and for the love of Christ, whatever we did there was always very obvious halo/double reflection on the Samung's setup menus displayed via HDMI to the Sony...needles to say that movie picture looked watery and bloomed via HDMI...this cannot be normal...I was very puzzled and was basically put off by those ten minutes of fiddling...However, being a "hater" of Sony I'd blame the display part of the equation...RGB SCART picture was even worse with "stellar amount of grain...but I expected HDMI to be crystal clear and sharp...
     
  7. Peter Parker

    Peter Parker
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    Although a digital connection should be 'pure', it does seem that a lot of manufacturers manage to fiddle with it to some degree or another, and not always for the better.

    Gary
     
  8. Kalos Geros

    Kalos Geros
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    Yes, but that was rediculous, even more so because people around us thougt it was a good picture...:eek: Maybe I should have ME examined by a psychiatrist...
     
  9. fallwood

    fallwood
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    Here are some pics of my Z4 over HDMI (1st pic) and VGA (second pic) there is obvious EE over the HDMI connection but none over the VGA connection . Digital connections are not yet always the best route IMO.
     

    Attached Files:

  10. Phill1978

    Phill1978
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    whats EE ?

    and why is HDMI worse ? is DVI plagued by these error`s or is it the poor digital transfer from cheapo HDMI dvd players ?
     
  11. PJTX100

    PJTX100
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    Good pics Fallwood, also very useful to show how good the pixel fill is on the newer D5 panels.
     
  12. Phill1978

    Phill1978
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    anyone ? if HDMI is worse then il stick to my orginal plan and buy a NAD T550 with Vga progressive output for best picture
     
  13. Peter Parker

    Peter Parker
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    I don't have that problem on my H78 (DVI), so it looks like it's either down to the source or pj in this case. If you could try another DVI or HDMI player that might eliminate where the cause is.

    Gary
     
  14. crackazz

    crackazz
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    I think it stands for Edge Enhancement, please tell me if I'm wrong

    Anyone with a AE900? what difference did you see by changing from component to hdmi?
     

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