Zeiss Victory SF LotuTec 10x42 (Black) 82 MM and once you’ve found the key lights and once you’ve found the ideal position – you can lock the specific position by the locking knob Lens hoods are primarily designed to prevent unwanted stray light from entering the lens by extending and shading the end of the lens A seven lens eyepiece system uses high transmission glass and field flatteners to correct for spherical aberrations to allow for pinpoint focusing across the entire field of view The Schmidt Pechan roof prisms are coated with ZEISS' P* phase correcting coatings to limit the light loss and increase colour fidelity and contrast