Vega-11U 2,8/50 enlarger lens

Description

Vega-11U 2,8/50 enlarger lens – 5 anastigmat lens (5 elements in 4 groups). Focusing is done by rotating the lens focusing ring with frame enlarger. Lens has a device for fixed installation of each aperture.

Format negatives 24×36 mm.

Focal length – 54 mm.

Aperture range: 2,8-11.

Field of view 38 °.

Transmittance – not less than 0.55.

The resolution of the lens, referred to the plane of the film at 5 * magnification: center / edge lines / mm – 70/40 (according to other sources – 71/39, as well as [73, p. 47] – 45/25).

Operating distance – 28.8 mm.

Lens mount M39

Note: when installing through the normal adapter M39-Nikon, M39-Canon, M39-Pentax, Vega-11U 2.8/50 hurt mirror cameras, as it has a huge overhang the rear of the helix. The rear of the heavily favored. The lens can be used on a narrow format (on conventional crop cameras and modern full-frame SLR cameras) only with the macro tubes or macro fold bellows.