I-11M 300 mm f/ 9 Lens

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Optical design

Format: Large Format

Type: Prime lens

Focusing: Manual Focus (MF)

Lens mounts: Large format

Optical design: 4 elements in 3 groups, Tessar

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Average price: $30

Specifications:

Focal length	Max. aperture	Min. aperture	Blades	Min. Focus (m.)	Filter Ø (mm.)	Weight (gr/oz)	Length (mm/in)
300mm	f/9.0	f/90	18		66	665/23,5	48/1,9

Additional information:

The Industar-11M 300 mm f/ 9 (Russian: Индустар) is a duplicating distortion-free lens, employing the Tessar optical scheme. It is characterized by a good correction of chromatic and spherical aberration. This lens was used with duplicating cameras such as FG-2Мand with large format cameras (the FK ("ФК"), the FKP ("ФКП"), the FKD ("ФКД"), the FKR ("ФКР")). It is equipped with a 18-blade iris aperture. Resolution: center/edge (lpmm): 35/14 (supported formats - from 9х12 to 30х40 cm). The lens has a single-layer chemical coating. Pilot thread: СпМ(SpM) 53х0.75

Posted by: wright Date of publication: 26.12.2012

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Mechanical quality	4.33	3
Optical quality	3.33	3
Usability	3.00	3
Pricing / Value	4.33	3
Bokeh	3.67	3
Overall lens rating	3.73

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