These are all cross-eye stereograms.
These can be viewed as is by slightly de-focusing your eyes and then cross them until an image appears in the middle and then relax your eyes to get a stable 3-D image. It's worth the trouble!
But don't overdo it if you have difficulty- try again later.(headache warning).
Brian V.
Thanks for looking and trying the 3-D
If you can freeview these the effect is wonderful- always reminds me of looking at the bug before photographing it- you expect them to start moving
PJ- glad you got it to work- the effect is always better the first time you visualise them. BTW once you have done it, it's like riding a bike- very easy the next time.
Brian V.
These are remarkable! I had no idea you could do this with digital! I had to check out all the 3D shots you put on your website. My favorite are the fruiting bodies of the liverwort. Any inside info on how you pulled it off?
Thanks Stephen - there's no tricks - just take one shot- move sideways and take another shot. The amount of lateral movement is about 1/30th of the subject distance so for macros it's pretty small . I then use the freeware prog stereophotomaker to align the shots (items in each shot should all be horizontally aligned), set the stereo window and swap the pics over for cross-eye viewing. You can do this for any type of photography not just macros.
Hope your eyes are ok after that 3-D viewing session
Brian V.
After lots of staring, I could finally see the 3D effect. It's very impressive! How is it done? Is it just that the 2 images have slightly different focus points, or is there more to it? Anyway, even without the 3D these photos are top quality.
These are owesome! How you did the 3D if you don't mind? also I noticed that you have Ext. tubes I have a 30D canon what are the Ext. tubes you recommend? Thanks!!
Thanks for the comments all- they are fun when you can view them easily
See description in answer above for how they are done.
SzZsu- for extension tubes, assuming you are not using an EF-S lens then the Kenko ext tube set is pretty good.
Brian V.
whoa, i did it! these images literally pop out of the page when it's done properly. Plus they look alot more clear and crisp when they "merge" together. I tried touching one of them lol.
Thanks again for the comments. It is a bit of a suprise the first time you get these to work
Golden1245. you are right about the detail- the brain manages to merge the detail in both shots- you can actually focus stack images using this method.
Brian V.
Neat