All the fisheye clips in this video are HPX170, which has a 72mm filter thread using an opteka 72mm fisheye and 10mm spacer ring. Look up my Tanaka video. That uses hvx200(82mm filter thread) 72mm opteka fisheye with an 82-72mm step down ring and 10mm spacer ring.
@@sleepyboisam for the HPX I used a 10mm spacer ring like this www.bhphotovideo.com/c/product/964657-REG/cokin_r7272_72mm_extension_ring.html For the HVX I used the above spacer ring as well as this step down ring www.bhphotovideo.com/c/product/809717-REG/Sensei_sdr8272_82_72mm_Step_Down_Ring.html Links provided may not be the actual ones I ordered but should do the trick. Just make sure you order the right size spacer / step down ring to match both your cameras filter threads as well as the the threads on the lense you plan to use
