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#Carl zeiss jena binoculars df 7x50 plus

image on the edge of the field could have been sharper.Ĭarl Zeiss Jenoptem 7x50 and Nikon 7x50 IF HP WP Tropical.

not especially bothersome brightness loss at the egde of FOV,.

good control of the chromatic aberration,.

Orange-pink on objective lenses and oculars, purple on the prisms. A lot of modern producers could take a leaf out of Jenoptem’s book… A typical field for this class of equipment.īlack and matt tubes and the bottom. Measured by us amounted to 7.23 +/- 0.04 degrees and was slightly narrower than stated in the specifications. You can notice some grease next to oculars.Ī pipe in the centre of the binoculars where you can attach an adapter.Īpparent field of view of 50.3 deg (according to simple formula) and 47.4 deg (according to tangent formula). Individual focusing on the right ocular – it is smooth to turn but it moves the whole ocular as well. A classic ocular bridge which works evenly you can defocus the binoculars only by applying a lot of pressure on it. It moves lightly and smoothly (full turn takes 360 degrees). Very narrow central wheel with fine ribbing. Hard eyecups, a bit too small and without any regulation.

#Carl zeiss jena binoculars df 7x50 plus

The transmission curve with a peak near 550 nm.Ī classic Porro construction – made of metal plus quasi-leather padding. The blur occurs in a distance of 73% +/- 3% from the field of view centre.ĭistinct yellow.

Starts near 65% from the field centre and is medium on the edge. The distance of the first curved line from the field centre compared to the field of vision radius: 30% +/- 4% There are no caps for objective lenses or oculars included. Of course it features the T3M coatings.Īpart from the binoculars buyers got in the box a leather strap and a soft, leather pouch with its own strap.

The model we are testing here was produced in 1985 and, despite those 30 years that passed, it is very well-preserved. Its production lasted till 1990 when the Jena factory was overtaken by the Analytik Jena, the owner of the Docter brandname. Then, for some time, it existed on the market side by side with its twin model, the Carl Zeiss Jena Jenoptem 7x50. It underwent several slight modifications of the casing and was produced in more or less unchanged form until the 70s of the 20th century, when the T3M coatings were added. The Binoctem model, with an ocular bridge, making the central focusing possible, hit the shelves only in 1931. It was equipped with an individual focusing system. The history of the 7x50 binoculars, produced in Jena, starts in 1919 when the Carl Zeiss Jena Binoctar was launched. You can change your consents to the use of cookies at any given time. In this document you can find more information concerning browser settings and the way we and our social network, advertising and analytics partners process your data. If you fail to do so you should be aware that we are going to process your data according to our Privacy Policy.

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