What a Difference a picture makes! Moster Rainbow Sac Dollar!

Discussion in 'US Coins Forum' started by TonedCoinTrader, Mar 9, 2009.

  1. Avatar

    Guest User Guest



    to hide this ad.
  2. Leadfoot

    Leadfoot there is no spoon

    Please post the EXITF information from this capture.

    The reason I ask is that a) the color still looks oversaturated/unnatural (and may be caused by your camera setup), and b) the red channel has been blown causing the photo to look unnaturally bright (and causing a loss of detail).

    Respectfully...Mike

    p.s. regardless of the above, that's a cool coin and one you don't find attractively toned very often! Thanks for sharing!
     
  3. Hi Mike,

    I don't know? I don't mess with the camera I just point and shoot.

    The Colors are Very Bright!

    I use 2 OTT lights.

    Scott
     
  4. Leadfoot

    Leadfoot there is no spoon

    Scott, I know you don't that's why I asked for the EXITF :) -- because I suspect the issue I'm referring to is in the camera itself. You can use Photoshop to display the EXITF info, or something like Opanda:

    http://www.opanda.com/en/iexif/

    One of these days I'm going to have to buy one of your coins so I have an in-hand example of what I'm referring to.... :)

    Take care...Mike

    p.s. I'll be back shortly to explain the blown red channel comment....
     
  5. MK COINS

    MK COINS New Member

    i dont collect toned coins but they are a great conversation piece
     
  6. Leadfoot

    Leadfoot there is no spoon

    Here's a picture of the histogram for your photo:

    [​IMG]

    Notice the red color in the graph -- all off to the right side of the graph and -- that's showing how the red channel is blown (i.e. there's red channel data that is above FF / 255 in value). This causes the channel to be clipped, and the colors come out odd looking.

    Here's a shot with the histogram only showing the red channel:

    [​IMG]

    See how it's "right leaning" and "going off the right side of the graph"? That's the red channel being clipped.

    Dialing back the exposure and/or trying to even out the lighting will likely solve this problem -- however I suspect the photograph won't be as dramatic as a result.

    All that said, the red channel being clipped is only part of the problem -- which is why I've asked for the EXITF. I think there's something going on with the saturation in-camera.

    Respectfully...Mike
     
  7. I Downloaded the opanda and dragged the picture in now what info did you need?
     
  8. Leadfoot

    Leadfoot there is no spoon

    Once you have the photo loaded, just click the EXITF button and cut&paste the info.

    Depending on your camera type and what steps you use in post-processing, your JPG file may not have all the capture information (many photo editing packages strip this info). So, you may have to go to something like Nikon Capture (or Canon's editor) to get the rest of the setting information.

    But just post what you get there for now, and I'll let you know if that's sufficient. Thanks...Mike
     
  9. [Image]
    Image Description =
    Make = NIKON
    Model = E7600
    Orientation = top/left
    X Resolution = 300
    Y Resolution = 300
    Resolution Unit = inch
    Software = Adobe Photoshop 7.0
    Date Time = 2009-03-09 13:53:53
    YCbCr Positioning = co-sited
    Exif IFD Pointer = Offset: 228

    [Camera]
    Exposure Time = 1/270"
    F Number = F2.8
    Exposure Program = Normal program
    ISO Speed Ratings = 50
    Exif Version = Version 2.2
    Date Time Original = 2009-03-08 22:38:19
    Date Time Digitized = 2009-03-08 22:38:19
    Components Configuration = YCbcr
    Compressed Bits Per Pixel = 2
    Exposure Bias Value = ±0EV
    Max Aperture Value = F2.83
    Metering Mode = Pattern
    Light Source = unknown
    Flash = Flash did not fire, compulsory flash mode
    Focal Length = 7.8mm
    User Comment =
    Flashpix Version = Version 1.0
    Color Space = sRGB
    Exif Image Width = 500
    Exif Image Height = 500
    File Source = DSC
    Scene Type = A directly photographed image
    Custom Rendered = Normal process
    Exposure Mode = Auto exposure
    White Balance = Manual white balance
    Digital Zoom Ratio =
    Focal Length In 35mm Film = 38mm
    Scene Capture Type = Normal
    Gain Control = None
    Contrast = Normal
    Saturation = Normal
    Sharpness = Normal
    Subject Distance Range = unknown

    [Thumbnail Info]
    Compression = JPEG Compressed (Thumbnail)
    X Resolution = 72
    Y Resolution = 72
    Resolution Unit = inch
    JPEG Interchange Format = Offset: 946
    JPEG Interchange Format Length = Length: 8824

    [Thumbnail]
    Thumbnail = 128 x 128
     
  10. Leadfoot

    Leadfoot there is no spoon

    Fascinating and confusing at the same time!

    I can see nothing in your setup that would lead to the odd saturation (like a color space translation or saturation/contrast setting). Furthermore, the E7600 doesn't saturate colors naturally (like all Nikons they tend to err on the accuracy side).

    Did you take the photo in JPG to begin with or RAW -- I see the JPG save was done in Photoshop, but did any conversion occur prior to that, or does your camera save JPG files, which you imported into Photoshop then just cropped/resized the photo?

    Thanks for taking the time to post this info -- as you might have guessed, this issue has been eating at me for some time....Mike
     
  11. The camera always saves everything in jpg form
     
  12. FreakyGarrettC

    FreakyGarrettC Wise young snail

    You guys confuse me with your tech talk. :)
    BTW are you sure that is NT?
     
  13. I'll say that I'm sure enough that this coin is NT I will be sending it to NGC Very soon and will post the grade as soon as I learn it. :)
     
  14. FreakyGarrettC

    FreakyGarrettC Wise young snail

  15. mark_h

    mark_h Somewhere over the rainbow

    Not looking to offend anyone - just my personal opinion - neither picture did a thing for me. Of course toning is a personal choice and I am sure the coin looks better in hand. Be interesting to see what NGC does for the grade. Please follow up and let us know.

    Thanks
     
  16. Lol,

    No the PCGS morgan is an 1885 P

    The NGC is an 1885 O
     
  17. The mail man Just picked up the package to NGC :)
     
  18. halcyon

    halcyon Member

    Leadfoot,
    Couldn't the answer that you're looking for be packaged in that "manual white balance" entry from the EXIF? As he stated, he just "points and shoots". With that little nugget of information.. I would have expected the white balance to be set to "auto".

    bryan
     
  19. Leadfoot

    Leadfoot there is no spoon

    Bryan, That's an astute observation, and yes it could be...but I doubt it. White balance changes the (relative) values of the RGB channels, but it doesn't change the saturation -- and it is the saturation that looks odd to my eye...Mike

    p.s. I suspect he has a custom white balance and that's what the setting you allude to is signifying, perhaps TCT could fill us in on how he's doing white balance.
     
Draft saved Draft deleted

Share This Page