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 Replies: 98 / Views: 32,917 |
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Valued Member
United States
89 Posts |
The next stop is to make a computer program that takes the high resolution coin pictures and identifies them. It would be nice to have the computer verify variety types. Would it be so much to ask the computer to spit out a preliminary grade too?
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Moderator
 United States
23522 Posts |
That's not as farfetched as it seems. As we speak, people are working on it.
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Moderator
United States
56855 Posts |
Looks like PMD to me also. John1  |
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Pillar of the Community
United States
3546 Posts |
Hello, For anyone interested I just took my first Morgan silver $1 photo using my model # iT7 USB camera. The two sets of photos(with and w/o diffusion) are below in the referenced CCF thread: https://goccf.com/t/128310Constructive criticism is always welcomed insofar as how I can improve these shots. Thanks, mdpmedia |
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Pillar of the Community
United States
8516 Posts |
Wow, those are good shots with the diffuser. What are you using to diffuse the lights ?
Oregon coin geek.....*** GO BEAVS ! ! ! ***
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Pillar of the Community
United States
3546 Posts |
Hello, Well, I hope you do not fall over laughing when I tell you what I did. I placed two 60 watt EcoSmart (from Home Depot) 'natural daylight' CFL bulbs(< $ 3 each) , 180 degrees apart so that they directed their light upwards (at 45 degree angles to horizontal)onto the interior of a piece of concave-shaped white reflective plastic. This 8" x 8" piece of concave-shaped white reflective plastic was special ordered  from Wal-mart. I went into the mop section and bought a $ 2.50 white plastic bucket and used an exact knife to cut out the area that I required. What's special about this bucket's interior shape is that it uniformly reflects and distributes the light onto any substrate needing to be photographed: especially MS or close-to-MS type coins... Man, I have got a lot of $ invested in my camera and corresponding accessories.  mdpmedia |
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Pillar of the Community
United States
8516 Posts |
Haha, I would love to see a pic of that set up if you can get one. Sounds interesting.
Oregon coin geek.....*** GO BEAVS ! ! ! ***
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Pillar of the Community
United States
3546 Posts |
Quote:
I would love to see a pic of that set up In its current state this device is a hodge podge of loosely assembled pieces with 0 eye appeal and definitely not ready for prime time viewing. At present I have several other fish to fry unrelated to CCF and honestly do not have any time to devote to it. It is my intention to eventually clean this thing up and post multiple photos of it in a more congenial state down the road. mdpmedia |
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Pillar of the Community
United States
8516 Posts |
You must have the ability to turn the scopes lights on and off.
Oregon coin geek.....*** GO BEAVS ! ! ! ***
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Pillar of the Community
United States
3546 Posts |
Quote:
the ability to turn the scopes lights on and off This is definitely true. On 'all' of the posted shots within this particular thread (and externally-referenced threads) using this particular USB camera I never used the included/attached LED ring light assembly once. Depending upon the LED's intensity the shots tend to come out too white, not bright enough, or having an undesirable blue/violet tint. I cannot speak for other members but if my memory serves me correctly I believe I read once in another CCF thread that SsuperDdave thought that CFL lights tend to produce the best life-like photos. Please forgive me if I misquoted you, Dave. This is why I want to wait and complete my photographic assembly which will illustrate in greater detail the method to my madness w/r/t lighting sources/adjustments: the most critical factor in producing an acceptable photo... mdpmedia |
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Moderator
United States
23522 Posts |
In the presence of a good custom white balance setting, the nature of the bulbs isn't really important. If your camera isn't the best in that regard, I'm a big fan of CFL's in the Daylight range - 5000+ Kelvin - as they're the easiest for a camera to automatically color balance, being similar to outdoor light.
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Pillar of the Community
United States
1095 Posts |
Thanks mdpmedia for all the info and the sample photos. I always wanted a USB Microscope to photograph my coins. Never liked the shakiness and bad macro on my digital camera setup. You sold me on it. I ordered one from off Newegg.com just now. I think it may be slightly more advanced than iT7 though.. $26 +free ship... Here is a link to it. http://www.newegg.com/Product/Produ...9-0049-00004 |
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Pillar of the Community
United Kingdom
2624 Posts |
I just bought one for £11.99 from ebay...220x magnification and Win7 compatable. This may prove useful for many purposes, the only concern I have is that the model I ordered doesn't have any lighting so maybe I will have to rig something up. |
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Pillar of the Community
United States
3546 Posts |
Hello, I forgot to also include the only 'slabbed proof' coins that I snapped closeups of with my model # iT7: https://goccf.com/t/116630This example is provided to illustrate that the normal reflective glare emanating from proof coins did not adversely affect the final desired photo(s)... fyi, mdpmedia |
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Pillar of the Community
United States
2295 Posts |
Most of these don't have resolution less than 20x, which exceeds what you normally look at for RPMs, etc. Do you just move the camera away from the coin, to reduce the resolution, so it isn't so zoomed in on it?
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Replies: 98 / Views: 32,917 |
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Posted 07/21/2012 2:56 pm
