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Cine4Home - AE700 - Filter

Discussion in 'Projectors, Screens & Video Processors' started by OneEyedStuart, Nov 17, 2004.

  1. OneEyedStuart

    OneEyedStuart
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    One of the tweaks Cine4Home did on the AE700 under Video mode where they managed to get colour balance back to 65K and a contracts ratio of 2018:1 they mention the use of a filter.

    I have emailed them asking if I can purchase such a filter but alas no one has got back to me.

    Anyone every delt with Cine4Home with a view to purchasing something from them, or is there somewhere else I need to go to ?

    Any information appreciated.

    Regards
    Keith Hurst

    P.S. now after making damn sure I always turn the PJ of at the end of the night my green panel has stabalised and VB, although still there in certain scenes, is greatly reduced to the degree you have to be looking for it as opposed to actually watching the movie. Very happy with what I watch now on this machine :smashin:
     
  2. Darwock

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    Yeah they described what the filter needs to do and say they found a suitable one.. but I don't think they'll let the cat out of the bag because that's their trade secrets.

    I don't know the first thing about filters. I'd be happy just knowing what size and how it's fitted, as I may be tempted to try one of these Hoya filters.
     
  3. homeagain

    homeagain
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    Here's the link to someone who's done the footwork for you.
    www.matuschek.net/projektor-tuning/ptae700.html
    You can use babelfish to translate but after experimenting with various filters, a type 81 filter was used to colour balance the 'video' mode and achieve higher contrast.
    Good luck, Rob. :smashin:
     
  4. OneEyedStuart

    OneEyedStuart
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    Darwock,

    I have read posts indicating that Cine4Home can supply an AE700 fully optimised and configured, this includes the above mentioned filter. If they can do this I do not see why they can't supply the filter as an individual part.

    To my knowledge the AE700 takes a standard 77mm filter. It simply screws into the thread on the outer focusing ring. Price for such a Hoya ND2, I was quoted 46 quid form my local photoraphy shop.

    I must go back and read the ND2 / FLD filter threads, see who uses what and for what benefit.

    Anyhow I'll let you know how I get on with Cine4Home.

    KH
     
  5. OneEyedStuart

    OneEyedStuart
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    Rob,

    Many thanks. I shall investigate this further.

    Regards
    Keith Hurst
     
  6. homeagain

    homeagain
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    :thumbsup: You're welcome.
     
  7. OneEyedStuart

    OneEyedStuart
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    Rob,

    superb wee article there. I would recommend any AE700 owners to have a read.

    KH
     
  8. Darwock

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    I don't follow his testing logic through the translations - on the first page he dismisses 81 as being too green, saying 85 is a better match. Then at the end he goes back to 81, but I don't see why as no advantages to 81 were ever given?
     
  9. Darwock

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  10. fhSpacey

    fhSpacey
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    does that mean you switch the power off at the plug so its not even in standby mode?
     
  11. homeagain

    homeagain
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    :rolleyes: Hmmm. Well the first comparisons are only Photoshop approximations of what filters would achieve, although he does suggest that a type 85 filter would give best results. Even then 'a guessing game' is the most telling statement ! Once practical experimentation, and the outlay of money, begins, he seems to have achieved his goal with an 81 and some tweaking of the green drive of his PJ. We can't be too critical of someone trying to achieve what Cine4home won't divulge.
    Cheers, Rob. :smashin:
     
  12. Darwock

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    No criticism intended - babelfish is not particularly useful for getting the true meaning of an article though!

    Any opinions on the link I posted? £7.99 for a 77mm round Cokin filter vs. £37.99 for a 77mm Hoya filter at Jessops... what am I missing? Are Cokins made out of paper or something?
     
  13. OneEyedStuart

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    I switch off using the rocker switch on the back panel of the AE700, after the cooling down period of course.

    Regards
    Keith Hurst
     
  14. OneEyedStuart

    OneEyedStuart
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    Yes the photoshop evaluation you would have to dismiss, but it would seem a fair way to start experimenting with filteres without having to grab a bunch from the local photo supplier on a buy or return basis.

    From my reading however he seemed to have good results using a CC30R filter on Video mode. The screen shots on the second page seemed to confirm this.

    Perhaps its wasn't the Babel fish translation but my own limited reading skills which came to this conclusion :laugh:

    On the cheap filter front... 8 quid does seem rather cheap. However do these filters not have their own mounting system which you need to purchase seperately ? You can have a look at the Cokin Filter system here

    http://www.geocities.com/cokinfiltersystem/howitworks.htm

    Regards
    Keith Hurst
     
  15. Peter Parker

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    Perhaps the Cokin filters are a cheaper glass or plastic? The Hoya FL-Day I have is good quality coated glass.

    Gary
     
  16. CooperUK

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    Which of the cokin filters are you suggesting as a best subsitute darwock? There are quite a few in the list given in your link.

    At that price it may be worth the experiment :devil:
     
  17. Darwock

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    Well, the ones that match the ones in the article. 85B is on the list.. can't remember if there were 81s there or not. I agree by the way that he said a CC30R was best, but ONLY when combined with another filter. As I know absolutely zilch about filters and how they are connected, I intend to keep it as simple as possible!
     
  18. Peter Parker

    Peter Parker
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    In my case, I now couldn't live without having the filter on - it's that much better with it. There are other advantages with DLP, but both technologies benefit from optical colour correction rather than digital correction via the pj.

    Gary.
     
  19. Darwock

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    I'm not convinced actually. I say that because while cine4home recommended Cinema 1, or natural -1 as a setting for colour, I don't like these options. I watch nearly everything (mainly videogames actually) on 'normal'. It may not give accurate tones but it's bright and colourful.

    I do see the deficiencies of video mode despite liking the improved contrast, so I guess I would like to improve that mode. But it would be an act of faith on my part that it would give me an image I like better..!
     
  20. Peter Parker

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    I tried it and liked it, but I see your point. You also really need some way of recalibrating the colours, as just adding the filter alone won't do it all. You can use other peoples calibrated settings, but they are input specific and vary from source to source i.e. different manufacturer dvd players as well as HTPCs.

    Gary.
     
  21. explicitlyrics

    explicitlyrics
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    I switch between the modes while I use the projector. I find that some games and films dont all have the same settings and it often looks better on one while othertimes that same one will look awful. Quick switch at the start of a game/film makes all the difference...
     
  22. Darwock

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    I've ordered an 81B Hoya filter from Jessops, but they have no stock at the mo so it'll be a couple of weeks. I'll post my impressions at the time.
     
  23. OneEyedStuart

    OneEyedStuart
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    Darwock,

    any joy with your filter ?

    I received mine today and am going to try it out ( along with an FLD ) over the next few days.

    Regards
    Keith Hurst
     
  24. Darwock

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    Not heard from them yet. When you say 'along with a FLD' I take it you mean a comparison and not both at once?
     
  25. OneEyedStuart

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    No idea as yet the filters are designed so that you can piggy back them on top of one another. I managed ot get both filters ( Hoya ) from the States, shipped, for not much more than the the price of one here so I thought "Hey why not get both" :laugh:

    People on here have commented about the FLD so thought I would give that a bash. The 81B is designed ot get aorund the colour balancing issue on Video mode.

    I Intened to try them seperately then together. Anyhow Its all good fun tweaking. I'll keep you informed.

    KH
     
  26. Peter Parker

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    I've ordered a 21 filter Cokin set for £18 so I can try various combinations and see which one(s) do the trick.

    The FL-Day filter helps to remove green push, and with an Optoma H77, found that it balanced the green and red almost perfectly. This pj has a greater blue component so will need a yellow filter to counteract it.

    For best results though, you'll need SMART or Colorfacts to see what effects the filters are having, so you'll know howm much of each colour you need to add or reduce in the pj.

    Gary.
     
  27. OneEyedStuart

    OneEyedStuart
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    Yes I have been looking into this. Its a great idea to be able to rent it for a period of 21 days over in the states but i have not as yet managed to find anyone in the UK providing a similar service.

    For now, my DVE and eyes will have to be my calibration tools.

    Regards
    KH
     
  28. Peter Parker

    Peter Parker
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    If you have a good eye for 'grey', then you might be able to use the ire greyscales to see if there are any obvious colour pushes. For example, if 80ire and above look a bit green, you could reduce green and blue contrast by 5 points each, and increase red contrast by 5 points. It might gove you an idea of how much of esch colour needs adjusting.

    Providing you make a note of the original settings so that you can return to them, then you can try a few combinations until things look good to you.

    Gary.
     
  29. OneEyedStuart

    OneEyedStuart
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    Thanks for the advice Gary, its this side of it I enjoy.. the messing around and tweaking lol.

    Anyhow a bit of research needed then in front of the projctor with the filters etc...

    Regards
    KH
     
  30. Peter Parker

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    Hi Keith,

    I'm still learning about this side of things too, but feel free to ask any questions, and I'll see if I can help (or point you at someone/somewhere who can). I've a copy of DVE so I might be able to find the relevant bits. I normaly use Avia which is a bit better to navigate through I think, but it's better suited to NTSC.

    Gary.
     

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