We are ready to offer the new technology of the 3D shooting in digital format as alternative to using dual cameras with mirror rig system.
The Russian stereoscopic system is one of the oldest in the world. This system was used for production of 3D movies for more than 50 years.
The important principle of this system is:
Easy to use movie camera has small weight (7 kg) and is convenient to shoot from hands. Vision Research’s camera, the Phantom 65, with its 4,096 x 2,440 pixel CMOS sensor is the first high speed digital camera to rival traditional 65mm film cameras. This multi standard compliant camera will revolutionize the world of high speed cinematography recording 202 frames per second at necessarily resolution for 3D shooting – 4096 x 1712 (65mm 2.40). With “hot-swappable” Phantom CineMag memory magazine 256, 526 Gbt with docking station make this camera user-friendly in either on-set or post-production environments.
This Phantom camera equipped with NIKFI stereo lens was used in 3D shooting of the full-length feature film “The Best Film 3D” by Sony Pictures production.
One of the main problems of creating technological systems for 3D shooting of life nature, especially people, is the inter axial distance between the left and right lenses which should not exceed the basis of eyesight (65mm) and should have much smaller size, multiple degree to scale increase of the image on the screen. Two optical blocks consolidated in a uniform frame will form a uniform 3D lens, having the remote control of the focus, iris and imaginary convergence. The cameraman has a complete set of seven 3D lenses: 23mm, 28mm, 32mm, 35mm, 40mm, 75mm and 100mm. The interaxial distance between the left and right optical blocks – 26mm. It is enough for shooting the people and animals without effect of miniaturization and should have a sufficient distance of comfortably reproduced space between the front and background without large parallaxes.
Two frames side by side similar as a 35 mm format locate on the single sensor similar 70 mm film format. In this case the interaxial distance between frames is 26,4 mm that meets the requirements of shooting of the alive model described above. The choice of single system allows solving the problem of synchronization of the left and right images automatically.
|Russian stereoscopic system||Dual cameras with mirror rig systems|
|Ergonomics||Single camera with ergonomics close to traditional cinema||Two cameras installed in a device called a "rig" use technologically sophisticated precision equipment|
|Weight||7 kg||27-37 kg|
|Number of stuff||Two specialists:
- Mechanic assistant
- Focus and imaginary convergence assistant
- Two mechanic assistants
- Optics alignment engineer
- Focus assistant
- Imaginary convergence assistant
|Angles synchronization||Not required, since the information is located on a single sensor||Camera synchronization required. Synchronization might be lost when the power voltage drops. For shooting speed
96 frames per second and higher there are some restrictions on the synchronization
|Optical scheme||Shooting on parallel axes of the imaginary convergence, to help avoid geometric distortion of images||Shooting on converged axes requiring subsequent correction of geometric distortion of images in post-production|
|Optical system||Two optical blocks consolidated in a uniform frame with unified management of focus and iris. Close to the lens barrel in the traditional cinema||Two separate lens, each in its own frame, requiring technologically sophisticated synchronization using special processor|
|Ability to change interaxial distance||Discrete change in the range of
15 to 110mm
(enough for feature films)
|Variable from 0 to 110 mm
(Not a fundamental advantage for feature films)
|Lens change time||As in traditional film production – about 2 minutes. No optics alignment required||20 minutes followed by a technologically complicated optics alignment|
|Post production other than traditional cinema||One extra operation required - to separate a single image into two streams stereo pair||Require additional operations:
- Correction of the synchronization of the left and right images
-Correction in brightness, color tone, geometry, the vertical parallax of the left and right images
Stereo-70 system was developed in NIKFI (Cinema and Photo Research Institute) in 1965 under direction of professor Andrey G. Boltianskiy and Nina A. Ovsyannikova in cooperation with Mosfilm studio.
For continuous improving of 3-D movie technic NIKFI was honored with Technical Achivement Award by Academy of Motion Picture Arts and Sciences in March 1991.