during exposure. The MKF-6M model turned out two years after 
was a special modification for long-time space missions. 
In 1984 another multispectral camera was added to Jena's 
photogrammetric and remote sensing camera range- the MSK-4, 
a four-channel camera specially designed for aircraft use. 
Into its design went the experience gaired with the MKF-6 
and MKF-6M cameras. 
The Double Camera Adapter introduced in 1978 provided a 
possibility for the simultaneous of two aerial cameras of 
identical or different focal lengths. 
In 1980, the wide-angle lens cone was upgraded, The 150mm 
f/4.5 Lamegon B lens duplicated its predecessor in focal 
length, angular coverage and lens speed, while considerably 
surpassing it in imaging quality. At f-stop 5,6 it yielded 
an AWAR of 61 l/mm for high contrast and 31 l/mm for low 
contrast (on Kodak Plus X), Standard distortion throughout 
the frame area was 3 ,um or better. 
An entirely new genefation of aerial cameras emerged from 
Jena in 1982 - the LMK Aerial Survey Camera System 
The system completely differs from the MRB concept, with 
new substantial performance features thanks to the incor- 
poration of modern microprocessor technology. Camera weight 
has been substantially reduced (to about 30% of the MRB); 
exposure control has been automated, based on differential 
exposure metering, and aircraft forward motion, The camera's 
new control unit offers a maximum in a lucid user-friendly 
arrangement, including the indication of current operating 
variables (f-stop, shutter speed etc.), gamma recommendation 
and the amount of image motion (if the motion compensator 
is switched off). Levelling-up and drift corrections are 
automatically transferred from the control unit to the camera, 
The system comprises the following modules, viz. 
- mount, 
- lens cone, 
- drive unit, 
- magazine, and 
= control unit. 
The splitting of the camera unit (as exemplified by the MRB) 
into two components, i.e, lens cone and drive unit, contri- 
butes to the previously mentioned weight reduction and 
especially decreases the weight to be lifted in case of lens 
cone change during a flight. Supplementary developments as 
well experience gained in the successful practical use of 
the camera led to an upgraded system, now designated 
LMK-1000, A new high-performance lens, the 210mm f/5,6 
Lamegoron P was added to the system's range of lens cones, 
and the range of forward motion speeds that can be compensated 
was extended from a maximum of 32 mm/s to 64 mm/s, 
Another improvement is the data projector incorporated in the 
magazine, with with camera data (shutter speed, f-stop, 
forward motion amount, frame number) and external data can 
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