Re: 25 Reasons to Aviod the SD-10 (was 15 Reasons to Aviod the SD-10)

Discussion in 'Digital Cameras' started by Paul Howland, May 9, 2004.

  1. Paul Howland

    JPS Guest

    In message <>,
    In theory only, you sad clown. Foveon recommends very specific filters
    to get something close to RGB to be captured by the x3 sensor, which
    Sigma omits because of cost and lower sensitivity. Without any
    filtration, each layer picks up a wide band of light frequencies with
    awkward response curves that make it nearly impossible to separate the
    colors with any degree of accuracy.
    No, there is no guessing of color in Bayer demosaicing; it spreads the
    color it *does* record and assumes no higher resolution. Luminance is
    almost as accurate as it would be with an RGB stacked sensor, at the
    same resolution.
    This person is clueless. The Sigma Cameras only record one thing
    accurately; luminance per pixel in the RAW data. As an entire image,
    the luminance is not as accurate because of aliasing effects.
    Nonsense. Foveons can see some colors at a higher resolution per pixel
    than bayers, but the actual colors recorded are of low integrity.
    --
     
    JPS, May 18, 2004
    #41
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  2. Paul Howland

    Crownfield Guest

    and thus you win "The Laugh of the Day Award" !!
     
    Crownfield, May 18, 2004
    #42
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  3. Paul Howland

    Paul Howland Guest

    Claptrap. Put up or shut up George.
     
    Paul Howland, May 19, 2004
    #43
  4. Paul Howland

    Lionel Guest

    Kibo informs me that (George Preddy) stated
    that:
    "way of the future"? - *All* the current Canons use CMOS sensors, shit
    for brains.
     
    Lionel, May 19, 2004
    #44
  5. You mean the Canon DSLRs use CMOS sensors. Most of the non-SLR Canons
    use CCDs.

    Dave
     
    Dave Martindale, May 19, 2004
    #45
  6. Paul Howland

    Bill Funk Guest

    "More powerful"??
    That's like saying that a Chevy 1/2 ton pickup is more powerful than
    the Washington monument.

    The two cannot be compared on power because they do entirely different
    tasks.
     
    Bill Funk, May 19, 2004
    #46
  7. Paul Howland

    Lionel Guest

    Kibo informs me that (Dave Martindale) stated that:
    Preddy was referring to "digital SLRs" in the quote I was responding to.
    If you check my post again, you'll the see the quote right there. ;)
     
    Lionel, May 20, 2004
    #47
  8. Paul Howland

    Lionel Guest

    Kibo informs me that (George Preddy) stated
    that:
    You don't have the faintest idea what you're talking about, liar.

    And where are these photos you claim to have sold?
     
    Lionel, May 20, 2004
    #48
  9. Paul Howland

    Paul Howland Guest

    More bull. Put up or shut up George. Show us your professional photos.
     
    Paul Howland, May 20, 2004
    #49
  10. SNIP
    Just checking:
    Can the Foveon run a PC? Can it run a PDA then? Can it run a refrigirator?
    How is it more powerful? Does it make a bigger hole when you throw it
    against the wall? What are you comparing with? Does it get warmer during
    operation?
    Just guessing because you don't make any sense.

    Or are you just crying for attention again?

    Bart
     
    Bart van der Wolf, May 20, 2004
    #50
  11. No no, you got it all wrong. Clearly it is more powerful, because it can
    transform a sloped line into a jagged one with only one operation. Talk
    about CISC, huh?

    -JP
     
    Jukka-Pekka Suominen, May 20, 2004
    #51
  12. Paul Howland

    Bill Funk Guest

    The 10M is a *SENSOR*, not a processor.
    It simply can't be compared to any processor in terms of power. They
    are not comparable.
    It's still not a processor.
    While both the Chevy and the Washington Monument both cast shadows,
    that doesn't make them comparable.
    It's still a sensor, not a processor.
     
    Bill Funk, May 20, 2004
    #52
  13. This discussion has a long history, going back 6 months. If you'd like
    plenty of information about how the Foveon sensor really works, do a
    Google search of the archives of this newsgroup over that period,
    looking for "Sigma" or "Foveon". There are literally thousands of
    messages.

    If you follow any of the threads for long, you'll also see why people
    call George a liar. He says things that aren't true, several people
    prove beyond a doubt that they are not true, and "George" just continues
    to say them. On the other hand, his story about whether he actually
    owns a Sigma camera, and whether he's an amateur or pro, does change
    from time to time.

    Dave
     
    Dave Martindale, May 21, 2004
    #53
  14. (Laurence Matson) wrote in
    Anti alias filter
    Do you know any sampling theory?

    If you don't apply an anti alias filter before sampling you
    might get faulty information. Then you get "jaggies" and other
    strange phenomena. With a proper anti alias filter you will
    not get any "jaggies".

    Now - of course - perfect anti alias filters does not exist
    and the sampling device is a regular grid. So, avoiding all
    kind of jaggies is not possible.


    /Roland
     
    Roland Karlsson, May 21, 2004
    #54
  15. Paul Howland

    Bill Funk Guest

    The idea that the Sigma cameras have 10+MP sensors goes against all
    accepted definitions except a few espoused by Sigma proponents.
    I think it would be much more accurate to say they have 10+ million
    *color* receptors.
    A pixel is easy to see defined; a simple "define: pixel" (without
    quotes) Google search will bring up a LOT of entries, and not one
    would agree with the idea that the SD9 or SD10 have 10+MP.

    As I see it, the 3.42 MP SDx cameras interplolate their sensors'
    output to 10+MP, just as I can interpolate my 3030's output to 10+MP.
     
    Bill Funk, May 21, 2004
    #55
  16. Paul Howland

    JPS Guest

    In message <>,
    Maybe you could read a little history before you jump into a thread and
    pretend that the newsgroup started with the post you're replying to.

    George (whose real name is Steve) has been shown to be wrong about 99%
    of the things he's written in this newsgroup for about a half a year.

    What you have requested has been done, in fact, literally thousands of
    times over and over, but he still continues to spew the same nonsense;
    he pronounces what is not true, but that he wishes to be true, to be
    fact.
    --
     
    JPS, May 22, 2004
    #56
  17. SNIP
    If one knows something to be false, but says it is true, what would you call
    that person?

    You seem to ignore that 'George' only tells lies, hoping for someone to
    correct him so he gets some attention (which he must be lacking in real
    life). He even enjoys it more when he can push people to lose control over
    themselves (gives him the feeling of power he lacks in real life).

    Whether he uses Amiga computers or Sigma/Foveon as an instrument, it really
    doesn't matter, as long as he reaches a large enough audience, he will use
    lies to maximize the chance on a reaction. He lies, and then acts as if he's
    Stone Deaf, (http://www.winternet.com/~mikelr/flame78.html) just for some
    attention . He's a sad personality, and he is a pathological liar for sick
    reasons.

    Bart
     
    Bart van der Wolf, May 22, 2004
    #57
  18. Paul Howland

    JPS Guest

    In message <>,
    Everyone (who admits that) knows that.
    Anti-aliasing occurs before the capture, so I don't know what you mean
    by "unprocessed". Any aliasing that survive sapture by the sensor is
    permanent. You can't get rid of it without getting rid of the true part
    of the signal, also.
    --
     
    JPS, May 22, 2004
    #58
  19. Keep on him, Homer. maybe you are getting to him.
     
    Woodchuck Bill, May 22, 2004
    #59
  20. Paul Howland

    E. Magnuson Guest

    Wait, SPP has a half-size output option as well. So SD's record *three*
    different sizes. No, wait again. If you use ACR, it supports two
    *additional* output resolutions for a total of *five* (count 'em)
    different resolutions. And after you import it into CS, it will let you
    choose almost any size you want from 1 pixel to billions.

    OH MY GOD, Sigma stores almost every possible resolution in a single
    file. What genius! Photography will never be the same. Once people
    realize that their images can be any size, who knows what madness will
    be next. Perhaps, they'll even perfect a way to actually transfer these
    images to paper! I just can't wait!
     
    E. Magnuson, May 22, 2004
    #60
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