Illuminating browned coppers

Discussion in 'US Coins Forum' started by applebar, Jul 3, 2010.

  1. applebar

    applebar Junior Member

    I have several ms-6x coins all br
    & no red; it is difficult to see features
    & letters because of lack of contrast;
    also these are slabbed

    what type of lighting would help?
     
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  3. LEG END

    LEG END Junior Member

    Lighting dark coppers.

    I use monofilament bulbs, low watts, dispersed by matted mirrors. The more indirect the light, the better the results. Of course, you cannot beat the microscope listed in a thread on the board, even at the 1.2 megapixels. Bright lights on coppers seems to illuminatte them too much. :smile:smile:smile :smile:smile
     
  4. CheetahCats

    CheetahCats Colonial & Early American

  5. ldhair

    ldhair Clean Supporter

    I use a single light and try different angles. A bit of underexposure seems to help.
     
  6. kanga

    kanga 65 Year Collector

    And make sure as much as possible that the background is a non-reflective black or dark grey.
    You don't want a light-colored background overpowering the light reflecting from the coin.
    PCGS slabs are nice because they are translucent and a black background shows through well.
    NGC slabs are a pain because of the white insert. I cut a hole in a piece of non-reflective black paper and use it to mask out as much of the white insert as reasonable possible.
     
  7. Leadfoot

    Leadfoot there is no spoon

    +1

    Brown copper tends to look best with the light roughly 45 to 60 degrees to the coin, in my experience.

    [​IMG]
     
  8. ldhair

    ldhair Clean Supporter

    Great image. The color has a nice natural look.
     
  9. 900fine

    900fine doggone it people like me

    Yes.

    The single-source lighting approach creates shadows, which creates contrast. Vitally important on low contrast copper.
     
  10. 900fine

    900fine doggone it people like me

    Yes, yes, yes.

    In addition to this - zoom in as much as possible to fill the frame with the coin. That way the coin dominates the light metering, since the exposure is weighted toward the center of the frame.
     
  11. BadThad

    BadThad Calibrated for Lincolns

    I use a single fluorescent desk lamp, Home Depot $20. Personally, I prefer a white background to demonstrate that the white balance is correct. Coins really look different with improper white balance IMO. This is one of the most color accurate pictures I've taken.
     

    Attached Files:

  12. applebar

    applebar Junior Member

    WOW- thank you all very much- Cointalkers are both an erudite and generous group! I will take this sage advice and post a picture of the results.
    :)
     
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