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Topic: Anyone for Anaglyphs ? |
Alan Brookes
From:
Brummy living in Southern California
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Posted 8 Nov 2009 7:11 pm |
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How many of you can view 3D images of the instruments I've built ?
I've been taking stereoscopic photographs for about 45 years. I would love to publish some in the Forum.
A ribbed mediaeval 8-string guitar.
A 12-string teardrop cittern.
A hammered dulcimer.
If you have red/blue glasses you can view these three pictures in full 3D. |
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Jay Fagerlie
From:
Lotus, California, USA
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Posted 9 Nov 2009 7:11 am
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How do you do that Alan?
Jay |
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Ron Whitfield
From:
Kaaawa, Hawaii, USA
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Posted 9 Nov 2009 9:39 am
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| Hang on, Alan, let me get my LS3D glasses... |
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Richard Sinkler
From:
aka: Rusty Strings -- Missoula, Montana
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Posted 9 Nov 2009 1:17 pm
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Hang on Alan, let me get my LSD 
_________________
Carter D10 8p/8k, Dekley S10 3p/4k C6 setup,Regal RD40 Dobro, Recording King Professional Dobro, NV400, NV112,Ibanez Gio guitar, Epiphone SG Special (open D slide guitar) . Playing for 54 years and still counting. |
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Alan Brookes
From:
Brummy living in Southern California
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Posted 9 Nov 2009 5:34 pm
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| Jay Fagerlie wrote: |
How do you do that Alan?
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We have two eyes, so we need two photos taken simultaneously, from viewpoints separated by the same distance as between our eyes. To do that you can either use a stereoscopic camera, which has two lenses, or you can use two cameras mounted side-by-side, or you can use one camera mounted on a slide-bar on a tripod. Using two cameras side-by-side has the problem of getting the lenses close enough, due to the dimensions of the cameras, and firing both shutters simultaneously. Using one camera and a slide-bar can only be done if the object doesn't move. In this instance I used one camera and a slide-bar.
Once you have two images you can create an anaglyph using downloadable freeware called Anamaker.
The only problem with anaglyphs is when you take color photographs you can get some optical problems if there's a lot of red or blue in the picture, where one eye sees the image and the other doesn't.
This is part of my collection of stereoscopic cameras. Most of them take 35mm film. |
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Connie Mack
From:
phoenicia, new york
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Posted 9 Nov 2009 7:15 pm
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photoshop
alcohol
sleep deprivation
women.....
_________________
82'sho-bud u-12, frankendekely u-12, bride of frankendekley u-12, a whole mess of other instruments...finger still messed up but getting better... |
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Bo Legg
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Posted 9 Nov 2009 9:12 pm
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| Alan, maybe you could tell us were to get the glasses. |
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Stu Schulman
From:
Ulster Park New Yawk (deceased)
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Posted 9 Nov 2009 9:53 pm
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Alan,Amazing collection,very cool! 
_________________
Steeltronics Z-pickup,Desert Rose S-10 4+5,Desert Rose Keyless S-10 3+5... Mullen G2 S-10 3+5,Telonics 206 pickups,Telonics volume pedal.,Blanton SD -10,Emmons GS_10...Zirctone bar,Bill Groner Bar...any amp that isn't broken.Steel Seat.Com seats...Licking paint chips off of Chinese Toys since 1952. |
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Alan Brookes
From:
Brummy living in Southern California
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Posted 10 Nov 2009 7:51 am
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| Bo Legg wrote: |
| Alan, maybe you could tell us were to get the glasses. |
Bo, email me your address at afbrookes@aol.com and I'll send you a pair. 
How many of you have actually viewed these pictures in 3D ? |
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Ron Whitfield
From:
Kaaawa, Hawaii, USA
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Alan Brookes
From:
Brummy living in Southern California
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Posted 10 Nov 2009 5:34 pm
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To avoid confusion, if you're going to buy glasses for anaglyphs they have to be red/blue red/green or red/cyan, and the red has to be for the left eye in each case. Anaglyphs are useful to circulate because you don't need any special equipment, but they have drawbacks. Black-and-white photos come out better in 3D than color do, because if there's a lot of red or blue in your picture you will only see that with one eye.
Much the best system is to have a viewer which separates the images entirely. Such systems require that you have a stereo pair mounted side-by-side.
Another system is to have a lenticular surface on the photo, so that each of your eyes is bounced to one side. Behind the lenticular surface are two images -the stereo pair- which are divided into thin stripes. Such stereos can be viewed without a viewer.
The most popular method of projecting slides and movies is using polarizing filters on the two projection lenses, orientated at 90 degrees, and viewing through polarizing glasses, also orientated at 90 degrees, but the other way round. These glasses won't work on anaglyphs and vice-versa.
Another system of viewing, used mainly on computer screens, is for the monitor to alternate left and right images at about 50 frames-per-second. You wear LCD glasses synchronised to the computer which blanks out one eye then the other. This is the system that nvidia sells.
I've used all of these systems, but the only one practicable to use on the Forum is anaglyphs. |
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