[toni-a]

Hi all,

I am interested in making some 3D photographs, the concept seems cool.



What I noticed while looking closely to the pictures is that they are in fact two pictures, taken with 2 cameras a few centimeters away

in one we have the red channel, in the other the blue channel, our brain mixes them so we have a 3D photograph.

I am interesting in trying this.



Here's what I intend to do:

Make a tripod camera holder where I can slide the camera 5cm left or right, this should be quite easy to do.

take the same picture with the same settings on both sides of the holder.



in photoshop do the mixing of the 2 pictures, but how can I do it ??

ok from one blue channel, the other red channel, what do I do with the green ??

how to process ? I got the principle but not the direct way of doing it !!



anyone can help ?

[allanmb]

[quote name='toni-a' date='10 June 2010 - 05:54 AM' timestamp='1276145696' post='408']

Hi all,

I am interested in making some 3D photographs, the concept seems cool.



What I noticed while looking closely to the pictures is that they are in fact two pictures, taken with 2 cameras a few centimeters away

in one we have the red channel, in the other the blue channel, our brain mixes them so we have a 3D photograph.

I am interesting in trying this.



Here's what I intend to do:

Make a tripod camera holder where I can slide the camera 5cm left or right, this should be quite easy to do.

take the same picture with the same settings on both sides of the holder.



in photoshop do the mixing of the 2 pictures, but how can I do it ??

ok from one blue channel, the other red channel, what do I do with the green ??

how to process ? I got the principle but not the direct way of doing it !!



anyone can help ?

[/quote]



I have never tried it but my approach would be to add a layer over the image in photoshop and colour it as close to the blue in your glasses. Then merge the layers using multiply. Do a similar process for the red channel with the original image. Then I would merge the blue and red layers using add. Let me know if I am waaaay off the mark ;-)



Allan



(p.s. being able to edit the posts now is great :-)

[Guest]

[quote name='toni-a' date='10 June 2010 - 06:54 AM' timestamp='1276145696' post='408']

Hi all,

I am interested in making some 3D photographs, the concept seems cool.



What I noticed while looking closely to the pictures is that they are in fact two pictures, taken with 2 cameras a few centimeters away

in one we have the red channel, in the other the blue channel, our brain mixes them so we have a 3D photograph.

I am interesting in trying this.



Here's what I intend to do:

Make a tripod camera holder where I can slide the camera 5cm left or right, this should be quite easy to do.

take the same picture with the same settings on both sides of the holder.



in photoshop do the mixing of the 2 pictures, but how can I do it ??

ok from one blue channel, the other red channel, what do I do with the green ??

how to process ? I got the principle but not the direct way of doing it !!



anyone can help ?

[/quote]



Getting the camera holder is easy - there are little tripod adjustment sliders that cost next to nothing. Should be available in any serious camera shop (though possibly not in major chains, as it is slightly specialized).



-Lars

[Guest]

Nothing much to add to Allan's post in terms of doing this. However, I think you'll probably be somewhat disappointed because the red-blue technique doesn't produce images that are very nice, which is why the more modern approach is to use vertical and horizontal polarization.



That said, if you just hold the photos next to each other and look at them cross-eyed, you should be able to to get the effect too. Have fun!

[wim]

[quote name='Chris F' date='10 June 2010 - 04:03 PM' timestamp='1276178606' post='415']

Nothing much to add to Allan's post in terms of doing this. However, I think you'll probably be somewhat disappointed because the red-blue technique doesn't produce images that are very nice, which is why the more modern approach is to use vertical and horizontal polarization.



That said, if you just hold the photos next to each other and look at them cross-eyed, you should be able to to get the effect too. Have fun!

[/quote]

That's not very modern actually. I used that technique 30-odd years ago already <img src='http://forum.photozone.de/public/style_emoticons/<#EMO_DIR#>/biggrin.gif' class='bbc_emoticon' alt='' />.



I even made my own B&W 3D slides, stereo images as we used to call them.



Kind regards, Wim

[canoman]

[quote name='wim' timestamp='1276215959' post='435']

That's not very modern actually. I used that technique 30-odd years ago already <img src='http://forum.photozone.de/public/style_emoticons/<#EMO_DIR#>/biggrin.gif' class='bbc_emoticon' alt=':lol:' />.



I even made my own B&W 3D slides, stereo images as we used to call them.



Kind regards, Wim

[/quote]

Two compact cameras side by side. The distance from lens to lens the same as your eyes. Both taking the same view. Then comes the hard bit. Make a stereo scope as used by the Victorians with prints about 4*3 in card holders. These have to be movable to get the focus.Two lens to look thru. I remember Woolworths sold a model with about 6 stereo positive color films on a disk.

[wim]

[quote name='geriatric' timestamp='1281264848' post='1577']

Two compact cameras side by side. The distance from lens to lens the same as your eyes. Both taking the same view. Then comes the hard bit. Make a stereo scope as used by the Victorians with prints about 4*3 in card holders. These have to be movable to get the focus.Two lens to look thru. I remember Woolworths sold a model with about 6 stereo positive color films on a disk.

[/quote]

Well, I used a single camera for both shots, and made my own stereo shift tripod adapter <img src='http://forum.photozone.de/public/style_emoticons/<#EMO_DIR#>/biggrin.gif' class='bbc_emoticon' alt=':lol:' />. I also made my own viewer: Two Agfa Gucki slide viewers mounted next to each other. Worked really well, actually, and no need to focus the picture. The slides were always in focus with these. And for projection: two slide projectors each, next to each other or on top of each other with linear polarizers attached to the lenses, cross polarized from one to the other (one horizontal, one vertical), and simple cardboard polaroid glasses with the same setup.



Kind regards, Wim

[scottburgess]

The old Victorian stereoscopes for viewing two images are quite common at antique shops. I've seen several for sale this summer, and I don't frequent such shops. ;-)



Also, no one has mentioned animated GIFs. In theory, one could take two images and toggle them at a fast frame rate to give an illusion of 3D. My wife toggled (on the keyboard) some portraits of me we were fiddling with--it was quite entertaining to see! This faux 3D technique seems to work well only when the two images are almost the same, but a tad different, such as portraits taken in quick succession.



Now, would one of you kind folks *please* go make me a holographic computer screen?



Scott

[Saldo]

An ex flat mate of mine was very much in stereoscopic photography, so he handcrafted a replica of a victorian camera and fitted inside 2 point-and-shoot, his laptop and a mini printer from kodak (the thing was huge).

then he started trying to sell 3d portraits to tourists here in London, which was not too profitable but apparently very good fun <img src='http://forum.photozone.de/public/style_emoticons/<#EMO_DIR#>/smile.gif' class='bbc_emoticon' alt='' />

I remember he used a dedicated software and also special paper, so he could also make images which could be seen without glasses (the result was not too impressive, but it worked).

I think if you search with google, you will find a few dedicated software which you could give a try to.

[lesford]

It looks worth it to try your approach though I prefer to work with layering different ones on an image and work it with photoshop to let it lift up with the use of colors.



Things look really interesting with the number of advancements in terms of 3d technology. I just hope that 3d gaming will be able to come back as I think that they are at the losing end of the bargain here.