Adaptor Ring Lens

Adaptor Ring Lens
I need to purchase this adapter ring for my fisheye? (Defined yes or no, please)?

While I have the JVC Everio GZ-120 ms in red. and I buy a fisheye lens and let me know if I have to buy this adapter ring to fit my fisheye fisheye camera: http://www.amazon.com/Opteka-Fisheye-30-5mm-Digital -Camcorders/dp / B00191QKMQ/ref = pd_cp_p_1 adapter ring: http://www.amazon.com/gp/product/B0002E3WJA/ref=pd_luc_sim_01_02 also like yes or no example set: Yes you have to buy "and explain why.

the Opteka fish-eye lens is 30.5 mm, which is the same size as the ring filter in the gz-120 ms. there is no reason for the jump ring adapter. so that is a resounding no.

MASSA 67mm Filters Adapter Ring for P Series Filter Holder Camera Lens 2 Pcs