How about have a section for 3D pix??

Shawn R. L.

Shawn R. L.

New member
I've been playing with 3D photography for quite a while now and have noticed there are a few others who are doing the same. How about have a section for 3D pix?

I know that it can be hard to do the cross eyed viewing so I've put up here a very simple 'device' that really helps getting it to work.

View attachment 14872

This is a diagram of the general idea. The 'device' is just a card that is about the size of a postcard with a rectangle cut into it. It has a thread running through the middle (up and down works best).
The card helps show the image each eye needs to see and block the other.......less visual confusion.




1 Pull the image you want to view up on the screen. The image must be a cross eye 3D image. Usually they are marked as such. Non cross eye 3D needs a special
viewer
2 Holding the card in front of you, close enough to the image so you can see the centerline with both eyes.
3 Keeping the card centered, pull it towards you. This part can get, visually, a bit confusing.....that's normal.
4 When you get about 2/3 of the distance to your face stop and close your left eye and you should see all or part of the image that is on the RIGHT. Switch to
the right eye and you should see all or part of the image on the LEFT.
5 By pulling the card closer to you or further to you you should be able to get it such that you will see all or most of the right image with the left eye and all or
most of the left image with the right eye.
6 Open both eyes. Pick some small feature in the picture and try to focus on it. You may see a double image. Pull the card, slowly, towards you or away from you
You may see the images coming together or apart. Adjust this distance till the images are one and at this point you shoud see it in 3D.
7 If you are still having problems, follow the steps above but at the last step, focus on the thread. While focusing on the thread, notice the image. Focusing on
the thread will force your eyes to cross and help you view the right image with the left eye and the same with the right.


View attachment 14873













 
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PegaZus

PegaZus

Stealth Freak
All fine and good, but how to get the 3D image in the first place?!

Yeah, yeah. Google is my friend. Course, you could always make an article...
 
Dragonsreach

Dragonsreach

Super Moderator
Staff member
I'm sorry but I see 3D as just a waste of time, when something like 25% of the population can't view it because of their optical impairment.
 
Shawn R. L.

Shawn R. L.

New member
Here's how to do 3D. Questions welcomed.

The idea of 3D is really quite simple. Taking a pictures of something from 2 different vantage points then, depending on how you arrainge the shots you will either have cross eye 3D (like i've done above) or if you swap left and right you will end up with the type that needs viewing glasses. This part is done in Photoshop.

You will need to use a background that has some sort of texture or pattern. VERY hard to 'photoshop in' a background and have it work in 3D.

1 Put your camera on a tripod.
2 Set up the mini how you'd like it, with the background paper in place.
If you're just beginning 3D it might be helpful to put a small piece of paper with R for right in one shot and if you move the camera to the left then
put a small piece of
paper with a L for left in the shot so that later on you can distinguish which is which. The difference can be slight and hard to see if you're not used
to doing 3D.
3 From a distance of, say 1 1/2 feet- 45cm, shoot the first picture. Remember where the center mark of the photo is aimed at.
4 Once the first one is shot, without moving anything, push the button on the camera to get the focus and lightmeter set the same as the first shot.
5 Now, keeping the button held down, slide the tripod to either the left or right about 3 inches - 7cm. Make sure you rotate the camera SLIGHTLY.
Have the center mark
of the shot be aimed at the same place as the first shot. Take the shot.
6 Import these into Photoshop. Put them side by side.
7 Adjust the images up or down so that the left and right model shot are exactly on the same level.
8 With he rectangle select tool, on the right or left image (NOT BOTH AT ONCE) put a frame around that image. Use the same selection frame,
slide it over to the other
image and frame it similar to the first.
9 Slide the images towards each other. Leave a black strip between the left and right image. Crop the excess.
10 For what's called Parallel 3D the left image and right image are on their respective sides. For cross eye 3D left and right are swapped.
 
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S

supervike

Super Moderator
Not to rub it in to those who can't do it, but it is pretty special. I posted a thread about it the other day.
 
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