SWA12 : focal length: 12mm , Angel of view: 70 degree, distance of exit pupil:15 mm, size: 1.25 inch
Swa ( ultra wide angle /super wide angel) 70 degree series
Color oxidation appearance, easy to distinguish different focal length different ratio
1.25 inch a group of 5 focal lengths 8mm. 12 mm, 16 mm, 19 mm, 27 mm
4 groups of 6 optical lenses, multilayer green film
Ultra wide angle, flat field, achromatic optical design
Metal frame, metal spiral eye mask, grow pupil, suitable for wearing glasses to observe the mirror
Set the 1.25 " filter adapter thread in the bottom of the steel sleeve