Nikon NASA F4

[11] It includes one of the first laptops in space[12] mounted atop the Playback-Downlink Unit (PDU) and the kit also included the HERCULES Attitude Processor (HAP, a gyroscope based geolocation processor with initialization through star alignment shot with Nikon NASA F4 and additionally GPS data, giving up to 0.005 degrees per hour precision[13]), Electronic Still Camera (ESC) Electronics Box (ESCEB) including removable imagery data storage disks, NRL HERCULES Inertial Measurement Unit (HIMU) with the three-axis Honeywell ring laser gyroscope, DA-20 action finder, a night vision image intensifier as well as assorted lenses and cables.

[14] Nikon has been a supplier of space (EVA) capable cameras[15] for NASA since 1971, when they delivered a modified Nikon F SLR Photomic FTn camera[16][17] with center-weighted TTL metering system,[18] which was first used on the Apollo 15 mission.

[19] In 1973, a newer modified version of the Nikon F with a motor drive was delivered for use in Skylab.

[1][2] Removable IDE hard-disks were used for digital storage of 40 images each with 8 bits per pixel.

The original development team included NASA Civil Servant electronic and mechanical design and fabrication, Lockheed development of the Electronic Still Camera ground station, Nikon Engineering supplying in total 14 modified Nikon F4 camera bodies also for prototypes, and Ford Aerospace and JPL development of the CCD image sensor.

Nikon NASA F4 front view with DA-20 action finder, Electronics Box and lenses.
Nikon NASA F4 together with HERCULES measurement and ring laser gyroscope right, its Electronics Box in the center and the laptop mounted atop the HERCULES Playback-Downlink Unit and Attitude Processor left.
Apollo 15 ( NASA ) Nikon F with FTn Photomic prism and motor drive, usable for extra-vehicular activity . The first 35 mm SLR in lunar orbit.
Nikon NASA F4 back view with DA-20 action finder and Electronics Box.