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The Robot Lenses that came with my cameras. It's not the complete series, it's just those which I tested.


Zeiss Tessar 1:2.8 f = 3cm
Focal length: 30mm
Aperture: F 2.8 - F 16
Min focus distance: 0.45m (at F 8 38cm)
Length (from flange): 12/19mm

Diameter: 43mm
Weight: 89gr.


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The lens.

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Seen from front.

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Seen from the mount.

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The camera and the lens.

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The lens is extremely short.

This lens has a multi-blade iris, perfectly round. It has click-stops for distance settings. 
According to the serial number, this is a very old lens, made in late 1936.


Schneider Xenagon 1 : 3.5/30mm
Focal length: 30mm
Aperture: F 3.5 - F 16
Min focus distance: 0.45m (at F 8 28cm ! )
Length (from flange): 21/25mm
Diameter: 46mm
Weight: 140gr.

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The lens.

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Seen from front.

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Seen from mount.

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Camera and lens.

This lens is very compact, but far from the 30mm Zeiss Xenagon. It has a multi-blade iris, perfectly round. According to the serial number, this is a modern lens, made in 1974.


Schneider Radionar, 1:3.5/38mm
Focal length: 38mm
Aperture: F 3.5 - F 16
Min focus distance: 0.5m (at F 8 = 40cm)
Length (from flange): 21/25mm

Diameter: 46mm
Weight: 140gr.

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The lens.

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Seen from front.

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Seen from the mount.

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Camera and lens.

This lens is very compact. It has a multi-blade iris, perfectly round.
According to the serial number, this is an older lens, made in late 1954.


Schneider Xenon, 1:1.9/40
Focal length: 40mm
Aperture: F 1.9 - F 16
Min focus distance: 0.7m (at F 8 = 60cm)
Length (from flange): 29/32mm

Diameter: 46mm
Weight: 216gr.

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The lens.

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Seen from front

jpg/robot_lens_40mm_IMG_8293.JPG
Seen from the mount.

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Camera and lens.

The lens has a beautiful multi-blade aperture, perfectly round. According to the serial number, this is lens made towards the end of the year 1960.


Schneider Xenon, 1:1.9/40

Focal length: 40mm
Aperture: F 1.9 - F 16
Min focus distance: 0.5m (at F 8 = 37cm)
Length (from flange): 31/35mm

Diameter: 46mm
Weight: 124gr.

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The lens.

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Seen from front.

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Seen from the mount.

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Camera and lens.

This lens is much lighter than the old version (124/216 gr). There are some more differences. This one has a 5-blade aperture, the old version is multi-blade, perfectly round. The new version focuses down to 37cm at F8 (old: 55 cm at F 8). Mine has faint click stops for the aperture and it has no firm grip to unscrew. It moves more easily, settings are easier to read. So both versions have their pros and cons.
According to the serial number, this lens was made in 1978.


Schneider Tele-Xenar 1:3.8/75mm

Focal length: 75mm
Aperture: F 3.8 - F 22
Min focus distance: 1m (at F 8 78cm)
Length (from flange): 44/50mm

Diameter: 46mm
Weight: 200gr.


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The lens.

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Seen from front.

jpg/robot_lens_75mm_IMG_8305.JPG
Seen from the mount.

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Lens and Finder.

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Finder, viewer side.

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Finder, seen from front.

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Camera with lens and finder seen from the front.

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Camera with lens and finder, seen from the back.

The lens has a multi-blade aperture, perfectly round. The finder has a luminous frame which adapts according to the distance set.
According to the serial number, this lens was made in 1952.


Schneider Tele-Xenar 1:3.8/75mm
Focal length: 75mm
Aperture: F 3.8 - F 22
Min focus distance: 1m (at F 8 80cm)
Length (from flange): 44/50mm

Diameter: 41mm
Weight: 195gr.


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The lens.

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Seen from front.

jpg/robot_lens_75mm_2_IMG_8311.JPG
Seen from the mount. Yes, last lens element has to be cleaned...

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Frame finder., 75mm frames set

jpg/robot_lens_75mm_2_frame_IMG_8319.JPG
Finder, 38mm frames.

jpg/robot_lens_75mm_2_frame_IMG_8320.JPG
Finder, folded and pouch.

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Camera with lens and frame finder seen from the front.

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Camera with lens and finder, seen from the back.

The lens has a multi-blade aperture, perfectly round. The finder has a movable back frame which adapts the parallax according to the distance set. According to the serial number, this is a very old lens, made in late 1941.



Robot Tele-Xenar 4.5/110
Focal length: 110mm
Aperture: F 4.5 - F 22
Min focus distance: more than 2m 
Length (from flange): 75/78mm

Diameter: 46mm
Weight: 200gr.


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Camera and lens.

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Seen from above, A big lens.

The lens is lightweight but quite big. Mine lacks click stops for the aperture. It moves easily, settings are easy to read. According to the serial number, this lens was made in 1999.

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