My time has come!
The above stereographic image is for cross-eyed viewing (most stereograms are wall-eyed, so you may need to put your finger in front of your screen until this one comes into focus)
This is an image of Honolulu, Hawaii, published by NASA. Note Diamond Head (the volcanic crater) in the south.
Here are some other stereopairs published by JPL:
Wheeler Ridge, California
Mount Saint Helens
Salt Lake Valley, Utah
Wellington, New Zealand
These are cross-view, your probably using the focus at infinity trick instead.
Wow I had no idea it could be done that way. Just tried doing it and the image is way blurrier when ‘inverted’. I am near sighted. Does this mean it applies to illusions too?
Wow, I had the same problem as the one you replied to and I thought you were making a joke I didn’t get but I stand corrected. You were absolutely 100% right.
Turns out I was focusing at infinity, didn’t even realize it was a different thing than crossing my eyes until I tried to cross my eyes first before focusing on the pictures…
Very cool, thanks.
Yup. That was exactly it. I was thinking “I know how to do these” and not even paying attention to the instructions at the bottom.
Yeah, I’m also seeing them reversed.
You’re doing “wall eyed” viewing. These are for “cross-eyed” viewing. “Wall-eyed” means your eyes are focusing at a point behind the image. You need to cross your eyes for these. Try putting your finger in between your screen and your eyes, varying the distance until the dots merge. Then, remove your finger, focusing on the image itself. That should allow for cross-eyed viewing.