I-26m-u INDUSTAR-26M-U  2.8/ 52mm  Soviet Lens for enlarger M39

VERY GOOD CONDITION.

I-26m-U 2,8 / 52 (INDUSTRAR-26M-U F / 2.8 52 mm) - a lens for Soviet magnifiers. The lens does not have a focus ring, which makes it difficult to use as a photo lens. I-26m-U 2,8 / 52 can be easily turned into a macro lens, which, in fact, is interesting.

It differs from the hordes of other similar lenses of the I-50 / I-96 series for the I-26m-U 2,8 / 52 photo magnifiers in the housing, the relative aperture, and the 10-blade diaphragm, which closes to the minimum F / 16.

Made in USSR.

CHARACTERISTICS     

Format: 35mm SLR

Type: Fixed/ Prime

Focusing: Manual Focus (MF)

Lens mounts: M39x1/28.8  Leica screw mount (LSM)

Optical design: 4 elements in 3 groups Tessar

Focal length:  52 mm (52.48 mm)

Frame size: 24 × 36 mm

Aperture range: only a scale with aperture values ​​of F / 2.8, 4, 5.6, 8, 11, 16.

Angular field: 45° 28'

Blades: 10

Blades are not blacked out, glisten in the sun. Is formed a correct round hole.

Optical design: 4 elements in 3 groups, Industar / Tessar scheme.

Front Filter Diameter: the lens cannot use classic filters that are screwed into the thread near the front lens

Working distance: 28.8 mm

Maximum diameter: Ø 53

Resolution (center / edge): 30/ 19 lines/ mm

Light transmission coefficient: 0.8

Dimensions: 53 x 53 x 47 mm

Weight:  70 gr / 4 oz

Length: 45 mm / 1.8 in

Tracked Delivery

It takes about 14 - 30 days (delivery time may vary greatly depending on pandemic situation).

Delivery by UKRPOST (air) or EMS (Express Mail Service).

Thank you for your purchase.

I invite you to review all lots!