| Author | Thread |
|
|
01/06/2006 07:37:46 PM · #1 |
Anyone know of a filter (hopefully in 67mm or 62mm) that will do the red/cyan offset to create simulated 3D images? I know there's a technical name for that but I can't remember it. My kids are into the whole 3D thing with glasses right now ever since "Shark Boy and Lava Girl" came out. I thought it would be neat to do some photos that way for them.
But, I also know that the amount of 3D effect (closer or farther) is controlled by the amount of shift, and to which side the shift is made, so I don't see how a simple filter could really create the desired effect. |
|
|
|
01/07/2006 06:55:50 AM · #2 |
I wouldn't have thought there was a simple filter to do this, although I could be wrong, it's happened at least once before. :) The stereoscopic cameras I've seen have had two different lenses on the body.
However, I have recently read an article about doing stereography using an ordinary camera - not the easiest to source though, but here are the details:
Di Marzio, Frank, "Stereography: Adding an Extra Dimension to your Photography"
in Photographic Trader number 117 (no. 5 for 2005), pages 34-38.
ISSN 1327-5224
Published by Blazon Design and Publishing Pty Ltd
Contact:
Photographic Trader
PO Box 1021
Capalaba QLD 4157
Australia
enquiries@phototrader.com.au
A limited number of back issues are available - contact the publisher at the above address/email.
The article doesn't talk about using red/blue images, it's more about having the two views side-by-side and looking at one with each eye. But I guess you could experiment with bringing them into Photoshop as separate layers, and colouring one red and one blue as appropriate?
The key formula in the article was for how much you should shift between making the images, which he gave as
S = (100 x F) / (3 x N) where
S is the "stereo base" (displacement of the camera between taking the two images)
F is the focal length of the lens being used
N is the aperture (f-stop) being used.
If you use a focal length F in millimetres, then the displacement S will also be in millimetres. For the backwards countries still using imperial measurements, one inch is 25.4 millimetres.
Regards
Tim
|
|
|
|
01/07/2006 05:01:40 PM · #3 |
Good stuff -- my dad experimented with stereography a bit several years back after his dad gave him a stereoscope and a bunch of images taken in the early 20th century. He'd probably be happy to turn that stuff over to me now since his focus has shifted away from photography in recent years.
The reason I was asking about a red/blue shift filter is that I thought I read about one somewhere a couple weeks ago but now I can't dig it up. |
|
|
|
01/07/2006 05:46:12 PM · #4 |
Originally posted by paddles:
The article doesn't talk about using red/blue images, it's more about having the two views side-by-side and looking at one with each eye. But I guess you could experiment with bringing them into Photoshop as separate layers, and colouring one red and one blue as appropriate?
|
Several years ago I was into taking stereo pairs and Photoshopping them into both monochrome and color anaglyphs--as these red-blue (or cyan) images are called.
Numerous references to the techniques can be found here.
Anybody remember when tops of milk bottles were covered with cellophane that could be used to make extra glasses for 3-D comic books? Actually, anybody remember milk in bottles. ;-)
|
|
|
|
01/07/2006 07:52:51 PM · #5 |
Originally posted by riolobo:
Several years ago I was into taking stereo pairs and Photoshopping them into both monochrome and color anaglyphs--as these red-blue (or cyan) images are called.
Numerous references to the techniques can be found here.
Anybody remember when tops of milk bottles were covered with cellophane that could be used to make extra glasses for 3-D comic books? Actually, anybody remember milk in bottles. ;-) |
Cool -- thanks!! And a lot cheaper than a filter (if one existed)! :)
BTW -- I barely remember milk in bottles and the milk man coming to our house every couple of days. But I was too young for comic books at the time so I don't know if there was anything special on the bottle tops. |
|
|
|
01/08/2006 09:39:08 PM · #6 |
//www.atncentral.com/Zip_Actions/3D_Colour.zip
This action will create a blue/red 3d image. If you want more info, navigate to it directly from atncentral.com :)
|
|
|
|
01/08/2006 10:03:25 PM · #7 |
Of course, you'll need glasses to see your anaglyphs in 3D.
Here is a very good and comprehensive source: red-blue, red-cyan, polarized, clip-ons, and on, and on. |
|
|
|
01/09/2006 11:43:29 AM · #8 |
You may be interested in this lens which shoots stereo pairs in one shot.
Here are some 3D experiments I produced manually. |
|
|
|
01/09/2006 12:50:02 PM · #9 |
| apple last year had in testing mode a 3-d filter sort of thing but I have not heard if it has gone to market since then. It was incredibly cool and I remember thinking I could not wait til it came out on market, so if anyone knows of it, let the rest of us know : ) |
|
Home -
Challenges -
Community -
League -
Photos -
Cameras -
Lenses -
Learn -
Help -
Terms of Use -
Privacy -
Top ^
DPChallenge, and website content and design, Copyright © 2001-2025 Challenging Technologies, LLC.
All digital photo copyrights belong to the photographers and may not be used without permission.
Current Server Time: 09/22/2025 06:11:40 PM EDT.
