Lets meet with Zenitar 50mm f/2 standard photo lens for M42x1 mounts, which is produced by Russian plant KMZ. With adapters and converters it can be attached to any modern camera mount and it will allow to get excellent photos, due to low lens elements amount and chromatic and geometric aberrations correction. Its 50 mm focus is fixed; its aperture can be set in f/2 – f/16 range – it is light lens, aperture is controlled via 6 diaphragm blades; field of view is 45 degrees; and minimal focusing distance is 0.35 m. 6 lens elements in 6 groups are built into it, all of them are covered with protective and anti-reflective multicoating. Lens can work with 24 × 36 mm optical sensors, optical filters can be attached to it via M46×0.75 mount. It does not support auto-focusing and image stabilization ( however, camera itself can perform it via sensor shift, if it supports it ). Lens mass is 190 g, sizes are : 45 ( length ) x 65 ( diameter ) mm. Package contains : Zenitar 50mm f/2 photo lens itself, frontal and rear caps and user’s guide. This is a great objective photo lens, with which high-quality photos can be obtained, and, accounting its price, it has no competitors. Difficulties can be caused only by lack of auto focus and image stabilization for novice photographers and for video recording. So, it will be the most useful for experienced photographers.