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question on hd145 lenses

Discussion in 'Projectors, Screens & Video Processors' started by gary g, Feb 22, 2005.

  1. gary g

    gary g
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    I have a question about hd145 lenses,made by US PRECISION.can anyone tell me what types are available,for example I have a set of hd145 lenses which I am told are colour corrected(the lenses are clear to look through),is there any way of telling if they are actually colour corrected(or are they all corrected)
    am I to assume that colour corrected and FILTERED are the ones that are coloured to look through,ie blue(clear).red (red). and green(green).

    thankyou in advance to anyone that can help :thumbsup:
    Gary
     
  2. joflo

    joflo
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  3. gary g

    gary g
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    Hi Flo
    thanks for that
    I now know what ive got :clap:
    Gary
     
  4. joflo

    joflo
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    Curios what do you have ? :)

    flo
     
  5. gary g

    gary g
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    Hi again
    I have a set of corrected hd145 lenses(brand new in the box)
    I was curious when I found that they weren,t coloured glass.these will be for sale shortly as I am expecting a set of corrected and filtered ones through the post.
    Gary
     
  6. joflo

    joflo
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    Well let us know what the Modification brings as i was playing with the ideea to swap standard HD145 with filtered ones.
    Some says you loose to much light output for the little color correction you bring.
    Others say that the colors are much improved, that never go back to non filtered.

    So waiting for your input,
    Cheers,
    Flo
     
  7. gary g

    gary g
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    as soon as they are installed I will let you know.
    when I used to have a barco graphics 808s(forced to sell,taking over the lounge!)I considered buying filtered lenses(8"extortionate price)and i was told that the g2 settings had to be changed,which was obviously linked to the brightness :confused: .I wonder if the same applies here.I am now running a seleco 350plus(a down grade,I know :mad: ,but I get to keep my hobby in the lounge :thumbsup: )
    cheers
    Gary
     
  8. soerenp

    soerenp
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    So what's the difference between a set of clear HD6 and clear HD145 lenses ? I always thought that HD145 were really only filtered HD6's.
    :confused:
     
  9. crteaman

    crteaman
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    Hi guys, once you go colour filtered there is absolutely no way back,say goodbye to those orange reds and yellowish greens.colour filtering cuts the overall light output between 12-15%.HD6 andHD145 do not really differ in quality so much as to change the install distance.Changing to colour filtered lenses normally alters the convergence,every lens is a little different even two of the same type,it will change the H size slightly.

    james (crt)
     
  10. joflo

    joflo
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    @James,

    I am happy that you start posting on this forum more actively. :clap:
    I hope that more infos and advices on CRT will flow again.

    @Gary g/James

    What money are we talking for a HD 145 filtered ones except e-bay bargains?

    @everybody
    Putting photo red/green filters in front of your lens cannot be a solution just to check out the results?

    flo
     
  11. crteaman

    crteaman
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    Hi joflo, Yes its about time I made myself a little more active,however thats just the problem 'time' so I shall turn on my taps and try and produce a bigger flow or should that be flo? my god,they are using what for filters,great for cplours but not so good for optical resolution.
    Hmmm colour filtered lenses,now let me have a quick dig amongst my spares .....

    james (crt)
     
  12. joflo

    joflo
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    bump
     
  13. gary g

    gary g
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    Hi Gary here again
    I have just purchased a set of colour filtered,from a company in the states
    via ebay.these are brand new and boxed complete with caps on both ends.they cost me £64.00 (the set!) in adition I paid for air mail at £50.00 and when they arrived I had a bill for import tax of £33.00 so all in all I paid £147.00.Not a bad price for such an upgrade :clap:
    Gary g
     
  14. crteaman

    crteaman
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    Hi Gary, Make sure they are colour filtered rather than just colour corrected (which all lenses are) normal hd145 can often be had for this sort of money,whilst the filtered ones make a few hundred.
    Many sellers (and buyers) get this wrong but you certainly seem well up on this so I suspect you may have aquired one of this years bargains,let me know when you get them.

    james (crt)
     
  15. gary g

    gary g
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    Hi James
    lenses installed!!!filtered they are.
    A little deflection and convergence tweaking and WOW what a difference,sharper image and true colouring.I,m over the moon.
    Gary g
     
  16. crispybig

    crispybig
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    Just for info, my colour filtered lenses are marked HD-145N (note the "N"). I don't know if they physically differ at all from the plain HD-145 (which come in both clear and filtered varieties?). I surmise the N stands for NEC, as that's what they came on, but I haven't a clue.

    BTW has anyone found a source of spec sheets for the various USPL lenses? I've Googled for them, but only ever found a very basic comparison chart of a few lenses on the 3M site.
     
  17. crteaman

    crteaman
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    Hi Gary....you can't turn back to the darkside now......

    well done,one of my test pieces for the improvements colour filtering brings is the Mcdonalds sign in fifth element,now a deep dark red instead of an orange hued red,check also the colour of her hair.

    james (crt)
     
  18. gary g

    gary g
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    Hi James
    yeh fifth element special edition in dts,marvelous.
    I see what you mean about the reds,how did we manage before?
    Gary
     
  19. crteaman

    crteaman
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    Hi Gary, How.....it was easy we just used to wear those 3D glasses for the correct colours :)

    james (crt)
     

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