I discovered a flaw with my point and shoot.

Discussion in 'Coin Chat' started by Detecto92, May 14, 2012.

  1. Detecto92

    Detecto92 Well-Known Member

    No matter how I shoot...the top of the coin is more in focus than the bottom. Distance does not make any change.

    Take a look at this photo for example:
    [​IMG]

    Look how sharp the liberty is..in how out of focus the bottom is.

    I shot at the same angle...light set up..etc with my cell phone. This problem does not happen.

    [​IMG]
     
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  3. brg5658

    brg5658 Well-Known Member

    Are you still shooting with the coin propped up against a coke can? ;)
     
  4. ldhair

    ldhair Clean Supporter

    The coin is not flat to the lens and shoot at a higher F-stop.
     
  5. d.t.menace

    d.t.menace Member

    Yep, your camera has a major flaw. I'd sell it and get another. I'll give you ten bucks for it, I know how to fix it.;)
     
  6. geekpryde

    geekpryde Husband and Father Moderator

    Detecto, per the above post, you need to shoot with a smaller aperature opening (larger f-stop number). This will increase depth-of-field, and allow things infront of and beind the focus point to be sharply in focus. You dont want to go too wild, like f22, since it lets very little light in, but anything around 8 or 9 should be good.
     
  7. AlanFromRoc

    AlanFromRoc Member

    coins seem flat enough that a scanner would be OK. unless you're trying to show off something about the edge, which doesn't seem like an issue here.
     
  8. onejinx

    onejinx Junior Member

    Just sell the phone to d.t and go buy a new one
     
  9. Merc Crazy

    Merc Crazy Bumbling numismatic fool

    1999 called, they want their technology back.
     
  10. desertgem

    desertgem Senior Errer Collecktor Supporter

    Detecto, although "real men" don't read the instruction manuals, you might go over the pages on "FOCUS", as most point and shoots have several different modes. Also many have a focus lock and a manual-->press half way, Auto---> continue on pressing shutter, and it will correct the focus if you move it a little. Mine has a spot focus, a 3x3 grid focus, etc. "
     
  11. Detecto92

    Detecto92 Well-Known Member

    My camera does not have an adjustable F-stop.
     
  12. d.t.menace

    d.t.menace Member

    Try and make sure the camera lens and the coin are as parallel to each other as you can.
     
  13. geekpryde

    geekpryde Husband and Father Moderator

    Does it have a macro setting, usually represented by a flower symbol? I would think this would force the camera into f8+.

    Alot of point-and-shoot cameras have a shutter release delay after you press the button, and this kills focus (your hands are moving/twitching) at low shutter speeds less than 1/250 or so and also you tend to miss the shot with moving objects. Since macro shots are so close to the subject, any tiny movement will kill focus.

    You might be able to go into a local camera store and get a few years old used dslr for super cheap, and it will give you all the options you could ever want. If that's just not feasible now, keep it in mind for the future. Since you will be in the hobby for a long time, it will be a worthy investment. You'll just have to skip a few coin purchases. :p
     
  14. BUncirculated

    BUncirculated Well-Known Member

    Yeaher, what he said ;)
     
  15. Morgandude11

    Morgandude11 As long as it's Silver, I'm listening

    It isn't just the f stop setting, it is the lighting, Coins need excellent light to be well-photgraphed, and since I assume you are doing the pictures indoors, that makes it doubly complicated. Autoexposure controls make it much harder--the "auto settings" make too many compromises. First of all, a tripod is essential for coin photography. Backlighting with a light bulb always yields strange exposures--natural light is best, but that requires skill and experience.
     
  16. rodeoclown

    rodeoclown Dodging Bulls

    In my line of work, real men do. Us senior guys love telling the newbies to go RTFM all the time when they ask questions when the answer is in the manual... :thumb:
     
  17. gbroke

    gbroke Naturally Toned

    Aside from needing a tripod, I agree with this. I have seen all of your images lately, and you are not throwing enough light at the coin. The more light, the faster the shutter speed, and the more crisp the details will be.
     
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