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Replies: 10 / Views: 2,481 |
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Pillar of the Community
United States
627 Posts |
I saw a post on another thread by who (in my opinion) is one of the best numismatic photographers around (John Baumgart). His post was about stereograph images of coins. This is sort of like viewing a coin in 3D -- his description was the following: "I just started shooting stereographs...These can be viewed using special glasses that focus the images to where they should be in order to merge into a single image (like an old stereopticon), or you can "free-view" them by either crossing your eyes (viewing the right picture with your left eye and vice versa) or by aiming your eyes parallel to each other (viewing the left picture with your left eye). In either case, when done correctly, a center image emerges that shows depth. I can only do this cross-eyed, some people can only do parallel, some can do both, and some neither. It can take a bit of practice at first, but the result is kind of cool when it works, especially with high relief stuff. Where do you fit?"Well, needless to say I thought his images were super cool. The way I describe how you do this is to in a way almost focus your eyes behind the computer screen. If you have ever seen those "MagicEye" calendars or posters where if you stare at it for long enough you can see a 3-D image of something, this is similar. If you are viewing the side by side images and they appear to be inset instead of relief then try the other one (i.e., if you are viewing the "Cross" version and it looks like the design is carved into the coin, then look at the "parallel" image instead -- this one should look like it's popping out in relief). The method (as described by John) is to set up your lights and focus your camera on the coin. Then move the coin to the far left of the viewfinder and snap an image. Them move the coin (without rotating it) to the far right of the viewfinder and snap a picture. The slight difference in the lighting and luster bands of the coin when viewed "sterographically" make the coin seem alive. You can literally see the luster shimmer on a computer screen image!! It has its most interesting applications on high relief coins/medals/tokens. Here is what the viewfinder original images look like. Left side: Right side: AND, the two different types of stereograph images (depending on which method you can view them) -- give it a go and see if you can see the merged image without getting a headache!  Cheers, -Brandon
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Pillar of the Community
United States
648 Posts |
Crossed for me pops out. But now they both do  Thank You  nice coin!
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Bedrock of the Community
Australia
21788 Posts |
I have trained my eyes to look at stereo pairs of aerial photographs for photogrammetric purposes.
Coins have low relief relative topographical norms, and so there is not much advantage in viewing stereophotograph pairs of coins.
There is one famous numismatic exception: The St Gaudens extremely high relief Double Eagle. Now THAT would be something!
What is far more useful is the use of superimposed coin photograph pairs for the detection of fake coins.
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Pillar of the Community
 United States
627 Posts |
sel_69, I would disagree. While I'm not going to photograph my entire collection like this, for seeing luster "alive" this method is pretty cool. Again, I wouldn't say it's highly useful, but if you have a favorite coin or piece with some nice relief, it can add some "wow" to the presentation.
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Bedrock of the Community
United States
10284 Posts |
I stared at this and saw three coins and the one in the middle looked very 3D to me. Parallel was a little more difficult to do than cross but they both looked equally cool.The coat of arms or whatever that is looked a lot sharper and the field had more luster.The horse seemed to shimmer too.
Edited by TNG 06/05/2012 10:12 am
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Bedrock of the Community
Australia
21788 Posts |
brg5658: I WOULD certainly agree that you have shown your coin to perfection!
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New Member
United States
18 Posts |
I see three coins using the crossed pics but I am afraid my eyes will get stuck this way forever. lol
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Pillar of the Community
United States
1080 Posts |
if you have 3d glasses sitting around, try viewing this: 
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Pillar of the Community
United States
3486 Posts |
I had no problem and this is a dandy idea! The trick is to ignore image one and three and only concentrate on the image in the center. Also, do not try too hard - easy does it. 10 seconds tops, then look away and refocus your eyes. With a little practice, the results are just grand.
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Pillar of the Community
 United States
627 Posts |
Quote: if you have 3d glasses sitting around, try viewing this: Now you have me on ebay trying to find a pair of anaglyph 3D glasses! 
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Pillar of the Community
United States
1080 Posts |
okay, here's the version that doesn't require colored glasses :) 
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Replies: 10 / Views: 2,481 |
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