Olympus UK E-System User Group
Olympus UK E-System User Group

Join our unique resource for Olympus Four Thirds E-System DSLR and Pen and OM-D Micro Four Thirds photographers. Show your images via our free e-group photo gallery. Please read the e-group.uk.net forum terms and conditions before posting for the first time. Above all, welcome!


Go Back   Olympus UK E-System User Group > Show your photos > Foto Fair

Foto Fair Post your photos for friendly, non-critical feedback. This is the place to show pictures if you aren't yet ready for full-blooded critique, or simply want to share an interesting picture with other e-group visitors.

Reply
 
Thread Tools Display Modes
  #1  
Old 1 Week Ago
Harold Gough Harold Gough is offline
Full member
 
Join Date: Oct 2014
Location: Reading UK
Posts: 3,350
Thanks: 42
Thanked 475 Times in 449 Posts
Likes: 26
Liked 1,410 Times in 798 Posts
Home-Made Aid to Viewing Crosseye Stereo Pairs of Imagee

When I post stereo pairs on a website I use the generally-accepted stadard i.e. crosseye, with left and right images transposed. This video will show you how to cheaply make an aid which may help.


Harold
__________________
The body is willing but the mind is weak.
Reply With Quote
  #2  
Old 1 Week Ago
Phill D's Avatar
Phill D Phill D is offline
Full member
 
Join Date: Apr 2011
Location: Derbyshire
Posts: 6,736
Thanks: 777
Thanked 1,005 Times in 932 Posts
Likes: 348
Liked 969 Times in 569 Posts
Re: Home-Made Aid to Viewing Crosseye Stereo Pairs of Imagee

Harold do you know if your 3D images will work with one of the Brian May Stereoscopic Owl VR viewers?
Reply With Quote
  #3  
Old 1 Week Ago
Harold Gough Harold Gough is offline
Full member
 
Join Date: Oct 2014
Location: Reading UK
Posts: 3,350
Thanks: 42
Thanked 475 Times in 449 Posts
Likes: 26
Liked 1,410 Times in 798 Posts
Re: Home-Made Aid to Viewing Crosseye Stereo Pairs of Imagee

Quote:
Originally Posted by Phill D View Post
Harold do you know if your 3D images will work with one of the Brian May Stereoscopic Owl VR viewers?
Not the crosseye versions.

Harold
__________________
The body is willing but the mind is weak.
Reply With Quote
  #4  
Old 1 Week Ago
Phill D's Avatar
Phill D Phill D is offline
Full member
 
Join Date: Apr 2011
Location: Derbyshire
Posts: 6,736
Thanks: 777
Thanked 1,005 Times in 932 Posts
Likes: 348
Liked 969 Times in 569 Posts
Re: Home-Made Aid to Viewing Crosseye Stereo Pairs of Imagee

Ah OK that's a shame as I won one of them in a competition and was looking for something to try them on.
Reply With Quote
  #5  
Old 1 Week Ago
Harold Gough Harold Gough is offline
Full member
 
Join Date: Oct 2014
Location: Reading UK
Posts: 3,350
Thanks: 42
Thanked 475 Times in 449 Posts
Likes: 26
Liked 1,410 Times in 798 Posts
Re: Home-Made Aid to Viewing Crosseye Stereo Pairs of Imagee

Quote:
Originally Posted by Phill D View Post
Ah OK that's a shame as I won one of them in a competition and was looking for something to try them on.
Anything to please. A conventional version.



Harold
__________________
The body is willing but the mind is weak.
Reply With Quote
The Following User Liked This Post:
shotokan101 (1 Week Ago)
  #6  
Old 1 Week Ago
Keith-369 Keith-369 is offline
Full member
 
Join Date: Sep 2017
Location: North West England
Posts: 57
Thanks: 0
Thanked 4 Times in 4 Posts
Likes: 0
Liked 20 Times in 18 Posts
Re: Home-Made Aid to Viewing Crosseye Stereo Pairs of Imagee

Looking at that last one crosseyed is enough to make you crosseyed
Reply With Quote
  #7  
Old 1 Week Ago
Harold Gough Harold Gough is offline
Full member
 
Join Date: Oct 2014
Location: Reading UK
Posts: 3,350
Thanks: 42
Thanked 475 Times in 449 Posts
Likes: 26
Liked 1,410 Times in 798 Posts
Re: Home-Made Aid to Viewing Crosseye Stereo Pairs of Imagee

Quote:
Originally Posted by Keith-369 View Post
Looking at that last one crosseyed is enough to make you crosseyed
That's because you may be but it isn't!

Harold
__________________
The body is willing but the mind is weak.
Reply With Quote
  #8  
Old 1 Week Ago
Phill D's Avatar
Phill D Phill D is offline
Full member
 
Join Date: Apr 2011
Location: Derbyshire
Posts: 6,736
Thanks: 777
Thanked 1,005 Times in 932 Posts
Likes: 348
Liked 969 Times in 569 Posts
Re: Home-Made Aid to Viewing Crosseye Stereo Pairs of Imagee

Thanks Harold it almost works using the Owl. It definitely looks 3D but I just can't get the images to properly merge into one image I still get two side by side. Looking at the images that came with the viewer it looks like the two images in each case are slightly closer together. I'll try a bit of cut and paste to see if that's the issue.
Reply With Quote
  #9  
Old 1 Week Ago
Phill D's Avatar
Phill D Phill D is offline
Full member
 
Join Date: Apr 2011
Location: Derbyshire
Posts: 6,736
Thanks: 777
Thanked 1,005 Times in 932 Posts
Likes: 348
Liked 969 Times in 569 Posts
Re: Home-Made Aid to Viewing Crosseye Stereo Pairs of Imagee

Yep that worked a treat. It looks like the separation of points on the images needs to be between 65 & 75mm for the Owl to work properly. Your fly worked brilliantly. Now I'm going to ask how you generated the images?
Reply With Quote
  #10  
Old 1 Week Ago
Harold Gough Harold Gough is offline
Full member
 
Join Date: Oct 2014
Location: Reading UK
Posts: 3,350
Thanks: 42
Thanked 475 Times in 449 Posts
Likes: 26
Liked 1,410 Times in 798 Posts
Re: Home-Made Aid to Viewing Crosseye Stereo Pairs of Imagee

Quote:
Originally Posted by Phill D View Post
Thanks Harold it almost works using the Owl. It definitely looks 3D but I just can't get the images to properly merge into one image I still get two side by side. Looking at the images that came with the viewer it looks like the two images in each case are slightly closer together. I'll try a bit of cut and paste to see if that's the issue.
I think it needs an opaque divider, not the best idea with a fold-flat device.

Harold
__________________
The body is willing but the mind is weak.
Reply With Quote
  #11  
Old 1 Week Ago
Phill D's Avatar
Phill D Phill D is offline
Full member
 
Join Date: Apr 2011
Location: Derbyshire
Posts: 6,736
Thanks: 777
Thanked 1,005 Times in 932 Posts
Likes: 348
Liked 969 Times in 569 Posts
Re: Home-Made Aid to Viewing Crosseye Stereo Pairs of Imagee

Harold it worked fine just moving the two images a bit closer together. Do you think if I put an opaque divider in between the lenses it would have worked without moving the images? As for your stereo images do you just shoot the same shot twice but with a few inches of camera position movement? That's what the Owl instructions suggest to do. When I was at work we occasionally used to produce stereo electron microscope images and for them we used a separation angle of around 7 degrees but maybe that was a virtue of the equipment rather than a general rule.
Reply With Quote
  #12  
Old 1 Week Ago
Harold Gough Harold Gough is offline
Full member
 
Join Date: Oct 2014
Location: Reading UK
Posts: 3,350
Thanks: 42
Thanked 475 Times in 449 Posts
Likes: 26
Liked 1,410 Times in 798 Posts
Re: Home-Made Aid to Viewing Crosseye Stereo Pairs of Imagee

Quote:
Originally Posted by Phill D View Post
Harold it worked fine just moving the two images a bit closer together. Do you think if I put an opaque divider in between the lenses it would have worked without moving the images? As for your stereo images do you just shoot the same shot twice but with a few inches of camera position movement? That's what the Owl instructions suggest to do. When I was at work we occasionally used to produce stereo electron microscope images and for them we used a separation angle of around 7 degrees but maybe that was a virtue of the equipment rather than a general rule.
The main thing is to pevent each eye from being distracted by the wrong image. An opaque divider gives them no choice but practice overcomes the drifting.

The theory is a you say. For everyday subjects the distance apart of the centres of the two lens positions should be about the same as for your eyes, 60-65mm. I don't know if my camera moves by that spacing for macro but the front of the lens certainly does not.

It is really about angles. If the angle is too small the 3D effect will be reduced. If it is too large the effect will be exaggerated, as in 3D films. Also, you get distortion, such as a tubular flower changed from circular at its opening to elliptical.

With macro, we can never see close-up 3D so have to judge how to shoot it.

In all of the above, the centre, or some near-central feature, of each image of a pair should be the same for best effect.

Harold
__________________
The body is willing but the mind is weak.
Reply With Quote
  #13  
Old 1 Week Ago
Phill D's Avatar
Phill D Phill D is offline
Full member
 
Join Date: Apr 2011
Location: Derbyshire
Posts: 6,736
Thanks: 777
Thanked 1,005 Times in 932 Posts
Likes: 348
Liked 969 Times in 569 Posts
Re: Home-Made Aid to Viewing Crosseye Stereo Pairs of Imagee

Thanks Harold, will definitely have to have a go myself.
Reply With Quote
  #14  
Old 1 Week Ago
Harold Gough Harold Gough is offline
Full member
 
Join Date: Oct 2014
Location: Reading UK
Posts: 3,350
Thanks: 42
Thanked 475 Times in 449 Posts
Likes: 26
Liked 1,410 Times in 798 Posts
Re: Home-Made Aid to Viewing Crosseye Stereo Pairs of Imagee

Quote:
Originally Posted by Phill D View Post
Thanks Harold, will definitely have to have a go myself.
Excellent! Be sure not to rotate the axis of the lens too much between shots in a pair. If you have on-hot-shoe flash you will get problems with shadows when viewing. Ideally, have the flash freestanding. Not a problem if using daylight.

Harold
__________________
The body is willing but the mind is weak.
Reply With Quote
Reply

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
Home made Macro Lens SteveJ Foto Fair 4 2nd June 2013 01:41 PM
Some people should be made to stay at home. sapper The lounge 7 13th January 2013 12:14 PM
The Home Made Thread snaarman The lounge 15 9th May 2011 09:58 PM
Home made Radar Foto Fair 1 17th February 2010 10:42 AM
Home made slide scanner snaarman The lounge 9 4th January 2009 10:33 AM


All times are GMT. The time now is 01:32 AM.


The Write Technology Ltd, 2007-2017, All rights reservedAd Management plugin by RedTyger