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Industar-61 L / D is another victim of technical progress – along with Soviet film rangefinder cameras, it also remained out of work.
Lens Industar-61 L / D 53mm f2.8 m39
Lens Industar-61 L / D is a standard lens for FED rangefinder cameras. It was labeled as Industar-61 L / D (LD) 2.8 / 53 and Industar-61 L / D (LD) 2.8 / 55. Industar-61 L / D is a four-lens medium aperture anastigmat with enlightened optics. Equipped with an iris diaphragm. In the technical specifications and on the lenses themselves, the focal length was indicated as: 50 mm, 52 mm, 53 mm and even 55 mm.
Lens scheme Industar 61 LD
Made according to the “Tessar” scheme. High sharpness, minimal aberration. The lens detects excellent sharpness and color performance in use. The Industar-61 was the first domestic consumer photographic lens to use super-heavy crowns (STK-6 brand in two positive lenses).
Subsequently, the use of lanthanum and other special glasses in lens indices was not particularly noted.
Lenses “Industar” on the portal
- History. Lenses of the “Industar” series
- Industar-22 M39 50mm f / 3.5
- Industar-50 M39 50mm f / 3.5
- Industar-50-2 M42 50mm f / 3.5
- Industar-61 M42 50mm f / 2.8 L / Z MS
- Industar-61 M39 53mm f / 2.8 L / D
Industar-61 L / D (LD)
Focal length: 53 mm, 55 mm Relative aperture: 1: 2.8 Frame size: 24 × 36 mm Number of lenses / groups: 4/3 Aperture scale: 1: 2.8–1: 16 Number of aperture blades : 6 Luminous diameter first surface: ∅18.6 mm Light diameter of last surface: ∅16.4 mm Near focusing limit: 1 m Connections: lens to camera - M39 × 1 for screw-in bits - M40.5 × 0.75 for slip-on attachments - ∅42 mm Filter Mount Location: Front Resolution on TU (center / edge): 44/30 lines / mm Working distance: 28.8 mm Near focusing limit: 1 m Coating type: no data Dimensions: lens length - 48 mm largest frame diameter - ∅55 mm Weight: 140 g Years of production: since 1971
Lenses similar to Industar-61 L / D 2.8 / 53 M39
In addition to KMZ, the lens was produced by the Lytkarino Optical Glass Plant (LZOS): Industar-61L 2.8 / 52 – for rangefinder cameras (M39 × 1 / 28.8), Industar-61L / Z 2.8 / 50 – for SLR cameras ( M42x1 / 45.5), and the Kharkov plant FED: Industar-61 (I-61) 2.8 / 52, Industar-61L / D 2.8 / 53, 2.8 / 55 – for rangefinder cameras, plus formally non-replaceable a bayonet version for a camera with a central shutter FED-10 and a non-replaceable version for a FED-11 “Atlas”. In addition to the Industar-61M 2.8 / 50 threaded lens for the M42 × 1 / 45.5 connection, the Krasnogorsk Mechanical Plant produced a variant for the adapter ring “A” (Industar-61A) 2.8 / 52, and there is also information about the bayonet version in a frame for a ZENIT-7 camera.
Industar-61 L / Z was popular, but now it can be installed on SLR cameras. Rangefinder modification of Industar-61 L / Z – Industar-61 L \ D. Industar-61 L \ D is a standard lens for FED rangefinder cameras of the fourth and fifth generations.
Industar-61 L / D and L / Z. Differences
Despite the difference in one letter of the abbreviated name, identical circuits and glass, the lenses have a different design.
- The designations L / D (LD) and L / Z (LZ) are usually deciphered as: lanthanum glass, rangefinder or SLR camera. However, the letter “L” (at least for the Industar-61L lens) could have another original meaning – “lytkarinsky”.
- Industar-61 L \ D has a pusher of the rangefinder of the camera viewfinder, the working distance is 28.8 mm, the screw mount is М39х1. Itself is almost 2 times lighter than Industar-61 L \ Z.
- Industar-61 L \ Z is designed for use in Zenit full-size film cameras. The diaphragm blades fold in a relative star-shaped opening. Focal length for SLRs (45.5mm), threaded mount М42×1.
Industar-61 L / D 53mm f / 2.8 m39 in operation
The lens focusing ring is narrow, located at the bottom of the barrel. The focusing ring can be rotated 180 degrees. Ease of rotation is controlled by the density of grease under the lens ring. The minimum focusing distance of Industar-61 L / D is 1 meter.
The diaphragm is easy to control, there is a lock to hold the selected value. Diaphragm blades blackened, 6 pieces. They form hexagons from highlights at small values of the relative aperture. Very sharp from wide open, and allows for portraits with a slight background twirl.
Depth of field, bokeh
The depth of field is shallow enough for portraits. Background blur is present in just enough aperture for this lens. Sharp across the entire frame at f / 5.6. There is a depth of field calculator on the frame to calculate the depth of field.
The field of focus can be set using the calculator from the lens barrel and filmed without looking through the viewfinder.
The lens has corrected or minimized aberrations such as astigmatism, spherical and spherochromatic aberrations.
Excellent optical characteristics of “Industar-61” are obtained due to the use in both positive lenses of the superheavy lanthanum crown STK6 (Crown is called glass with a low refractive index and high dispersion (the difference between refractive indices for beams of different colors).
Body and build quality Industar-61 L / D
The build quality is decent. Industar-61 L / D, of course, is not without backlash, but it does not look and does not feel loose, flimsy. The review lens required a lubricant change, disassembly and maintenance. It is quite simple to disassemble, it does not require special skills. The values are engraved on the case, the engraving is filled with paint. The curved print on the frame gives the impression of an unskilled production approach.
Using Industar-61 L / D on modern cameras
Lens for mounting on rangefinder cameras. Due to the smaller focal length of the rangefinder lens, use on SLR cameras is limited. The focusing distance after attaching the lens to the DSLR only allows you to shoot up to 2 meters. Without such problems, the lens can be mounted on mirrorless cameras such as Sony NEX, Canon EOS M. (through the appropriate adapter from the M39x1 thread).
Focal length alternatives for Industar-61 L / D (53mm f / 3.5)
The main probable application of Industar-61 L / D is bust portraits. The lens is not suitable for video shooting. management is far from the best. The DSLR counterparts below are a legacy of yesteryear that is still in use today.
Helios of any modification will have better artistic characteristics due to the working wide f / 2 aperture, and older Helios models are slightly more resistant to backlight.
A complete analogue of Industar-61 L / D, it differs in the design of the frame and the flange, which allows it to be used on Canon SLR cameras through an adapter.
It is a good choice for leisurely shooting portraits with shallow depth of field and artistic background blur.
It is made according to the “Tessar” scheme, has a sharp and clean picture, good sharpness, easy to handle, lightweight. Widespread and cheap.
It fits perfectly on mirrorless cameras such as Sony NEX, Canon EOS M. In the secondary market, it has a low cost. The quality of the optics is at the level of the Tessar counterparts. This means a minimum of aberration and a high level of sharpness.