So many uses? Let’s list a few:
* 3D stereo glasses that will work on any screen that uses passive split polarity for 3D regardless of brand.
(Will not work for electronic switched 3D stereo.)
* 3D stereo glasses that work with any color code of anaglyph (common type of color coded stereo image).
* Preview a scene so you can see how it will look when you later photograph with a filter.
* Magnifying glasses with a whole range of magnifications.
* Sunglasses with any shade of darkness or color you like.
* Exploit the extended sensitivity of human vision to see infra red light.
* Protect your eyes from UV or just about any wavelength of light.
* Have different things happening with each eye.
All this and more from one pair of glasses by simply screwing in your favorite filters in a few seconds. Moreover you can make a pair of these quite cheaply in about an hour if you already have the parts.
OK, OK there is a little catch; to achieve all this you are going to have to get various camera filters to use in your Super Specs. I can guess you are thinking “Oh Oh! This is going to be expensive.” But there is a way to get a whole range of cool camera filters that are very cheap and will still work on your camera too: get them on eBay and try clicking that box so you can search worldwide; what you need are the Chinese suppliers. I have bought polarizers for as little as $3 and you can often get bundles of mixed camera filters for less than $20 all brand new.
Having said that I guess it will be no surprise that I bought everything for this project on eBay. Even though I did the purchasing some months ago, I have done fresh search to get prices for the parts list (including postage). Your mileage will vary depending on patience and luck finding bargains.
To attach the filters to the lenses so that they can be easily unscrewed and changed I glued two lens adapter rings into the glasses frames.
(Please vote for me, I would really like to win the Epilog laser cutter. Thanks)