Robot Royal 18
Robot Royal 18
I realize it a bit of an old thread, but anyway, there was one true halfframe Robot Royal rangefinder: the Royal 18.
To sum it up (and my apologies for being pedantic
😉):
Robot I, II, IIa, Junior, Star and all Star derivatives : 24x24mm with 26mm screwmount (although there was a small difference in pre-war and post-war mounts)
Robot Royal II: 24x24mm, no rangefinder and a *30mm* screwmount.
Robot Royal III: 24x24mm, with rangefinder and bayonet mount
Robot Royal 18: 18x24mm, with rangefinder and bayonet mount
Robot Royal 24: 24x24mm, with rangefinder and bayonet mount
Robot Royal 36: 36x24mm, with rangefinder and bayonet mount
And then there was the Recorder line, those where Royals with their
"top cut off" (so no rangefinder nor viewfinder) featuring removable backs and attachment for a motordrive, these were intended for industrial / scientific / security purposes and were available in a range of formats including 18x24.
You will also see Star derivatives without viewfinder, etc. Those were also used in industry/scientific applications. And if you see a Robot II without viewfinder, it's problably a wartime model for use in airplanes.
Incidently, Royals with a letter "a" (or alpha?) after the serial number also have the removable backs and motordrive attachment, according to the manual I dowloaded here:
http://www.butkus.org/chinon/robot/royal_robot/royal_robot.htm
For a complete lineup (I guess) with an estimate of their value and some pictures see:
http://collectiblend.com/Cameras/Berning-Robot/
For some more information and pictures, you can also take a look at
http://corsopolaris.net/supercameras/robot/robot1.html (italian, but partly translated in english)
Hope that minimizes the confusion somewhat
😀