Vizelex Polar Throttle Lens Mount Adapter - Canon FD & FL 35mm SLR lens to Sony Alpha E-Mount Mirrorless Camera Body with Built-In Circular Polarizing Filter Modifier Type_Deep EZ-Pro Parabolic Softbox effectively doubles the focal length

effectively doubles the focal length of the lens it's used with and maintains the resolution and contrast of any fine optic

just peel and stick

Instead of a direct beam

Visually focusing using the viewfinder or camera screen is the best way to ensure proper focus - not the distance markings

Mounts Praktica B (PB) SLR Lenses to Nikon F Mount SLR Cameras

Vizelex Polar Throttle Lens Mount Adapter - Canon FD & FL 35mm SLR lens to Sony Alpha E-Mount Mirrorless Camera Body with Built-In Circular Polarizing Filter Modifier Type_Deep EZ-Pro Parabolic Softbox effectively doubles the focal lengthFeatures: Mounts Canon FD & FL 35mm SLR lenses to Sony E mount mirrorless cameras Built in Circular Polarizing Filter; infinity focus or beyond guaranteed Integrated aperture control dial for adjusting the lens aperture Enhanced craftsmanship and high tolerance construction for demanding professionals Precision all metal construction with chrome plated brass mounts for secure and solid fit 24 Month Fotodiox warranty Take our expertise in lens mount