| RIVAL
  35MX REFLEX, version with one coaxial flash socket | 
| Producer data | 
| Producer | 
VEB Kamera-Werke Niedersedlitz | 
responsible constructor | 
Siegfried Böhm | 
| production period | 
 1954 | 
no of produced cameras | 
as a part of Praktica FX,
  second version-series (11,300) | 
| Technical properties of the camera | 
| shutter type | 
mechanically controlled horizontal-run
  rubberised cloth-blind type shutter with twin settings for fast and slow
  speeds | 
exposure time 
(possible settings) | 
B, 1/2, 1/5, 1/10, 1/25, 1/50, 1/100,
  1/200,1/500 | 
| view finder | 
fixed waist-level view finder with condenser type ground-glass focusing screen,
  simple sport view finder | 
mirror | 
no instant-return mirror | 
| film transport / frame counter | 
knob film advance, loose film take-up
  spool (metal), manual frame
  counter | 
lens mount | 
M42x1 | 
| self timer | 
none | 
battery | 
none | 
| metering system | 
none | 
flash system | 
one coaxial flash  socket at the front of the camera body
  for X-synchronisation (approx. 1/40s) | 
| flash indication | 
none | 
aperture reflection into view finder | 
none | 
| general comments | 
Praktica
  FX-version for the US-market
   variant with flash
  socket at the bottom of the left front side of the camera (typical Hummel 128 - socket
  at the bottom) 
 | 
| collection data | 
| Hummel-No | 
128a | 
Kadlubek-No. | 
KWE 2120 | 
| body no. | 
185579 | 
lens no. | 
4326976 | 
| lens type | 
 Jena T 2.8/50 | 
purchase price | 
60€ | 
| advertising | 
     
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manual | 
    
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