yes you can almost any scope,microscope , telescope, binoculars with eye piese measuring from 22mm to 43mm with UN-2 and 28mm to 50mm with UN-3 if your scope comes with threaded inside the eye pices we have special adaptor for it size 36mm and 38mm .
Which Smartphones I can fit on the adaptor ?
almost any smart phone with the 17mm screw lens case you can get this case from (eBay or Amazon) called (eye fish lens case)
What type of camera I can conect to the kit?
at the moment we have only ring for casio serious
we are making more ring for different casio Camera soon.
Code: CCR-1 EX-ZR100 , EX-ZR200 , EX-ZR300 , EX-ZR400 , EX-ZR500
Code: CCR-2.1 & CCR-2.2 EX-ZR700 , EX-ZR750 , EX-ZR800 , EX-ZR850 ,
Code: CCR-3 EX-ZR1000 , EX-ZR1100 , EX-ZR1200 , EX-ZR1300 , EX-ZR1500
Can I conect DSLR to the kit ?
Yes you can all the thread size are m42 standard.