By projection of pairs of bright-line frames for 28 and 90 mm, 35 and 135 mm, 50 and 75 mm lenses; automatic display of corresponding frames when lenses are locked into the bayonet mount
By projection of pairs of bright-line frames for 28 and 90 mm,35 and 135 mm, 50 and 75 mm lenses; automatic display ofcorresponding frames when lenses are locked into the bayonetmount