定焦鏡頭C接口間隔環套件

TECHSPEC® Fixed Focal Length Lens C-Mount Spacer Kits provide spacers for decreasing field of view and reducing working distances of standard fixed focal length lenses. The C-Mount Extender Kit includes 0.5mm, 1mm, (2) 5mm, 10mm, 15mm, and 40mm spacers. Decreasing working distance by adding spacers forces the lens to focus at distances that are generally outside their designed working distance, which can cause increased distortion, chromatic and spherical aberrations, reduced depth of field, illumination non-uniformity, and decreased light-gathering ability. C-Mount Extension Tubes and Brass Spacers are also sold separately.