Helicon - Antique and Vintage Cameras

Helicon

1935

Zeiss-Ikon A. G.

Dresden

Germany

Image of Helicon

Meter Type:
Photoelectric.

Calibration:
Film speed: 9 - 24 DIN, 20 - 35° Scheiner. Shutter speed: 1/1000 - 4s. Aperture: f1.4 - f16.

Identification:
The Helicon name is on the same side of the meter the calculator dial.

With:
Case.

Helios

1935

Zeiss-Ikon A. G.

Dresden

Germany

Image of Helios

Meter Type:
Photoelectric.

Calibration:
Film speed: 9 - 24 DIN, 20 - 35° Scheiner. Shutter speed: 1/1000 - 4s. Aperture: f1.4 - f16.

Identification:
The Helios name is on the opposite side of the meter to the calculator dial.

In use a dial is turned until a needle matches an index seen in the finder. The shutter speed and aperture pairs can then be read. In low light the needle can be matched to one of a series of values a multiplication table is then used to give the correct reading. The meter was also known for a short while as the Helicon, that name was later used for a combined meter and rangefinder. Some versions have a baffle over the sensitive cell. Available with a foot to fit the accessory shoe of a camera.

The 1935 Zeiss-Ikon catalogue shows the Helios with only a DIN or Scheiner scale and only one row of apertures.

Code Names:
1325

References & Notes:
BP 467039/1937. ZI Cat. 1935, p. 80. ZI Cat. 1937, p. 107.

Helios

1935

Zeiss-Ikon A. G.

Dresden

Germany

Image of Helios

Meter Type:
Photoelectric.

Calibration:
Film speed: 9 - 24 DIN, 20 - 35° Scheiner. Shutter speed: 1/1000 - 4s. Aperture: f1.4 - f16.

Identification:
The Helios name is on the opposite side of the meter to the calculator dial.

With:
Case.

Similar to the previous entry.

Code Names:
1325

References & Notes:
BP 467039/1937. ZI Cat. 1935, p. 80. ZI Cat. 1937, p. 107.

Helios

1935

Zeiss-Ikon A. G.

Dresden

Germany

Image of Helios

Meter Type:
Photoelectric.

Calibration:
Film speed: 9 - 24 DIN, 20 - 35° Scheiner. Shutter speed: 1/1000 - 4s. Aperture: f1.4 - f16.

Identification:
The Helios name is on the opposite side of the meter to the calculator dial.

Similar to the previous entry.

Code Names:
1325

References & Notes:
BP 467039/1937. ZI Cat. 1935, p. 80. ZI Cat. 1937, p. 107.

Helicon

c. 1936

Zeiss-Ikon A. G.

Dresden

Germany

Image of Helicon

Meter Type:
Photoelectric.

Calibration:
Film speed: 9 - 24 DIN, 20 - 35° Scheiner. Shutter speed: 1/1000 - 4s. Aperture: f1.4 - f16.

With:
Case.

This is a Helios type photoelectric exposure meter combined with a rotating wedge rangefinder. The price in 1937 was £9/15/0.

Code Names:
Code no. 1326. Also engraved W. 62975

References & Notes:
ZI Cat. 1937, p. 107.

Ikophot

1939

First Model

Zeiss-Ikon A. G.

Dresden

Germany

Image of Ikophot First Model

Meter Type:
Photoelectric.

Calibration:
Film speed: 6 - 30 DIN, 17 - 41° Scheiner. Shutter speed: 1/1000 - 1m. Aperture: f1.5 - f22.

Attributes:
Table for 20 - 41° Scheiner, 16 - 34° American Scheiner, 5 - 640 Weston. Dual range with baffle in front of cell.

With:
Instructions. Leather case.

Code Names:
1328/1

Ikophot

Early post-war Model

c. 1953

Zeiss-Ikon

Stuttgart

West Germany

Image of Ikophot Early post-war Model

Meter Type:
Photoelectric.

Calibration:
Film speed: 3 - 800 ASA. Shutter speed: 1/1000 - 60s, cine mark at 1/30. Aperture: f1.5 - f22.

Attributes:
Table for DIN and Scheiner conversion.

Identification:
Black plastic housing.

With:
Incident light diffuser. Leather case.

Ikophot

Image of Ikophot

Meter Type:
Photoelectric.

Calibration:
Film speed: 9 - 30 DIN, 3 - 800 ASA. Shutter speed: 1/1000 - 60s, cine mark at 1/30. Aperture: f1.5 - f22.

Attributes:
Table for DIN, ASA and Scheiner conversion. Filter factors 2x - 8x.

Identification:
Cream housing, no EV scale, filter factors.

With:
Incident light diffuser. Leather case.

Ikophot

Meter Type:
Photoelectric.

Calibration:
Film speed: 9 - 30 DIN, 3 - 800 ASA. Shutter speed: 1/1000 - 60s, cine mark at 1/30. Aperture: f1.5 - f22. Exposure Value (EV): 2 - 18.

Attributes:
Table for DIN, ASA and Scheiner conversion. Filter factors 2x - 8x.

Identification:
Cream housing, EV scale, filter factors.

With:
Incident light diffuser. Leather case.

Ikophot Rapid

1956

Image of Ikophot Rapid

Meter Type:
Photoelectric.

Calibration:
Film speed: 12 - 33 DIN, 5 - 1600 ASA. Shutter speed: 1/1000 - 60s, cine mark at 1/30. Aperture: f1.5 - f22. Exposure Value (EV): 2 - 18.

Attributes:
Table for DIN and Scheiner conversion.

With:
Incident light diffuser. Leather case.

Code Names:
1329C

Ikophot Rapid

1956

Meter Type:
Photoelectric.

Calibration:
Film speed: 9 - 33 DIN, - 1600 ASA. Shutter speed: 1/1000 - 60s, 8 - 64 f.p.s. Aperture: f1.4 - f22. Exposure Value (EV): 2 - 18.

Attributes:
Table for 17 - 38° Scheiner, 6 - 27 DIN. Dual range with baffle in front of cell.

With:
Incident light diffuser. Leather case.

Code Names:
1329C

Ikophot CD

c. 1966

Image of Ikophot CD

Meter Type:
Photoelectric. CdS cell.

Calibration:
Film speed: 9 - 36 DIN, 6 - 3200 ASA. Shutter speed: 1/1000 - 1h, 8 - 128 f.p.s. Aperture: f1 - f45. Exposure Value (EV): -6 - 23.

Attributes:
Table for 17 - 38° Scheiner, 6 - 27 DIN. Dual range with baffle in front of cell.

With:
Incident light diffuser. Leather case.

Ikophot T Export

c. 1968

Image of Ikophot T Export

Meter Type:
Photoelectric. CdS cell.

Two small bulbs light to show which way to move the calculator dial. No galvanometer was used, the dial affected resisters in the circuit to balance the meter cell. The price was £37.17.11 (a Weston Master V cost £12.5.0).

Calibration:
Film speed: 9 - 36 DIN, 6 - 3200 ASA. Shutter speed: 1/1000 - 2h. Aperture: f1 - f45.

Attributes:
Incident light diffuser.

With:
Instructions.

References & Notes:
Blue-Book 1968/1969, p. 93.

The post-war Ikophot proved very popular and was made for several years. Variations of the dial layout exist and early post-war models were made in black plastic rather than the later cream. The cine speeds were added around 1957, prior to this only an index at 16 f.p.s. was shown.

On pre-war models as the reading is taken a dial is turned to align a mark with the meter needle, the shutter speed and aperture pairs can then be read. The meter has a cover over the cell that hinges down for low light levels. There are two corresponding scales on the dial.

On early post-war models the meter needle moves over a dial scaled 1 -16, that value is transferred to the calculator where the shutter speed and aperture pairs can be read.

The Ikophot Rapid uses a match needle system where a dial is turned until an index arm lines up to the needle. The shutter speed and aperture pairs can then be read.

References & Notes:
BJA 1955, p. 605. BJA 1956, p. 591. BJA 1957, p. 205. BJA 1958, p. 193.

Photoelectric

Metrophot, Eos, Horvex

Prinsen, Electrodrem, Sixtus
Electro Bewi

Blendux, Ombrux, Cimbrux
Photoskop, Prix

Avo, Smethurst

Tempophot, Tempiphot
Excelsior, Photoscop, Rex

Weston 617, 627, 650, 819
Leicameter, 850

Electrophot

Ilford, Metrovick

Helicon, Ikophot

Avo, Chum
Picoskop, Universal, GEC

Sixtomat, Sixti, Sixon
Piccolo, Chrolon, Leica Meter
Mini Rex, Realt

Ultima, Ambassador
Petri, Polaroid, Vivitar

Weston Master

Canon Booster


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