SRW-6600-58 incorporates the specially designed 58mm size lens holding mount which makes perfect match with SONY DSC-F717/F707 5-Mega Pixel Digital Camera. Optical performances are same as DCR-6600PRO Wideangle lens except that SRW-6600-58 does not cause any vignetting image when properly mounted on the camera.
RA5258 adapter ring is NOT necessary with SRW-6600-58.
The lens is made of hi-index optical glasses, 3-group/3-element, fully coated for non-distortion(-1.3%) and sharp images.
It's an ideal accessory lens for professionals and advanced amateurs shooting in tight place. There will be no reduction of light value when this conversion lens is attached on the camera's lens.
All of Raynox conversion lenses are proudly made in Japan. At Raynox's wholly owned manufacturing subsidiary, every stage of production is rigorously checked and tested so that the lens elements compensate effectively for astigmatism, distortion and spherical aberration.... for an excellent image quality.
(Notice : Do not use CRW-6690 Wideangle lens with F-707 camera it may damage the camera lens.)