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Thread: 3D Clouds, and my technique

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    Default 3D Clouds, and my technique

    Finally, after buying various bits and pieces, finding a suitable site and "pruning" vegetation from the field of view, I have my first relatively successful 3D image of some clouds.

    I used a pair of E-410's, with 14-42mm lens at 14mm, mounted on tripods and separated by about 100 metres. I triggered one camera with a long range wireless remote, and the other with a standard cable release.

    I'm presenting the image as a triplet, Left-Right-Left. In other words, for parallel viewing use the left image and the centre image, and for Cross-eye viewing use the centre image and the right image.

    Any questions, please ask.

    Attachment 8171

    Cheers,
    Alec

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    Default Re: 3D Clouds, and my technique

    looks good Alec, the cross eye really produces a nice 3D photo,,

    Derry

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    Default Re: 3D Clouds, and my technique

    Derry, my audience of one,

    At the risk of boring you, I present another 3D cloud image.
    I pruned some more trees and was able to make the foreground land a bit more interesting.
    The cloud viewed with the naked eye, in 2D, looked plain grey and rather boring, so I wasn't expecting this detail to show in 3D. Quite fascinating, I thought. Again a Left-Right-Left triplet.

    Attachment 8184

    Cheers,
    Alec

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    Default Re: 3D Clouds, and my technique

    Quote Originally Posted by 3dpan View Post
    Derry, my audience of one


    Interesting result Alec, please can you explain why the cameras have to be so far apart? Is it necessary for getting a good 3D image?
    Regards,
    Henk
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    photography is my passion
    you are invited to visit my gallery at http://mordisco.smugmug.com

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    Default Re: 3D Clouds, and my technique

    Henk,

    Basically the separation of the cameras depends on the distance to the nearest object in the picture. Usually you work on a 1:30, or 1:50 rule.

    Clouds are somewhere between 1 Km and 6 Km away, lots of variables there though.
    Assume 3 Km, because the maths is easy. 3 Km divided by 30 = 100m, so that's a starting point.
    In my case I just happened to have a couple of hilltops 100m apart.

    I've tried to include some land in my pics, to act as a visual anchor and to add something recognisable. But it's very important not to have the nearest land too close, because it becomes very difficult to focus on.
    Again I was lucky and was able to see over the land immediately in front of the cameras. The nearest land in the pictures is about 1 Km away, and is still a bit close really. You may notice some difficulty in focussing there.

    It's basically a case of a few guidelines and a lot of trial and error.

    Cheers,
    Alec

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    Default Re: 3D Clouds, and my technique

    WOW!

    The stratified nature of the clouds becomes so clear. Who could have dreamt of that before crossing the eyes?

    I'll have to give this a try some day.

    Thanks for sharing this Alec.

    Cheers, Jens.
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    Default Re: 3D Clouds, and my technique

    Alec, interesting to see how the hazy area snaps out more when viewed cross eye,, sure adds the depth to the photo,,

    Derry

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