Stereo 3D Tank Pictures Challenge!

[vertex]

Chad, any specific questions on how to make em or is this enough??

Originally Posted by vertex

They are easy to make actually. I just take two pictures pointed at the same area, each with the camera moved about 5-10 cm sideways (the same width of your eyes is usually recommended). The trick is to take it of the same area exactly, use a tripod and all the same color/focus settings on your camera so things line up better.

Then put the left picture on the right and the right hand picture on the left side by side.

[Chad]

how would you do it with one camera in our tanks, considering the movement, would that not affect it?

[Winters]

Originally Posted by Chad

how would you do it with one camera in our tanks, considering the movement, would that not affect it?

Yes, you wouldn't be able to do it with a fish, or anything moving at anything quicker than a snail's pace. (Hmm.. I guess snails will still be okay) Unless you can rig together a setup where you've got two cameras kind of taped together side-by-side, and get them to both use the same settings and take the picture at the same instant. THAT would work for fish, etc. and the distance apart would be fairly good too.

Stereo photographs are actually fairly easy, as you can read from other messages above. I've got a whole university degree where I did a huge amount of work analyzing stereo airplane/satellite images of land to do measurements of building heights and all sorts of stuff. Very neat, when you get into professional uses of stereo imagery. But that's a whole other.. uhh.. course.

Take care!

[muck]

You have a degree in being Cross-Eyed Imran..??

[Winters]

Originally Posted by muck

You have a degree in being Cross-Eyed Imran..??

Sure Ryan. Explains a thing or two.

Hmmm... now this is getting me all into taking a stereo image tonight.. probably of my Toadstool. Will have to see how it goes!

[Matt]

I can see those "hidden image" 3-d things without any trouble, but I don't seem to be able to focus my eyes on these images. Even with the finger trick, I can't overcome the refocus as soon as I try to look at the monitor.

Anyone have any other tricks to "see" these images?

Matthew

[Winters]

Hi Matthew!

Originally Posted by Matt

I can see those "hidden image" 3-d things without any trouble, but I don't seem to be able to focus my eyes on these images. Even with the finger trick, I can't overcome the refocus as soon as I try to look at the monitor.

Anyone have any other tricks to "see" these images?

In order to have a stero image, one needs to take two photographs of the same item, the second photograph being taken with the camera shifted to the right around oh.. let's say 5cm. This will produce two photographs of the same thing with there being an area of overlap. This overlapping area between the two photographs is the 'stereo' zone.

I think that the photographs above need to be modified/cropped a bit to bring this out, as I think that the camera HAS been moved between the photographs but the images have not been properly displayed to facilitate stereo viewing. Let me do an adjustment on a couple of them:


A mushroom:

Some polyps, etc.:

How's that? Mike, I hope you don't mind me using one of your images to demonstrate the overlap idea.

Take care!