Ko 120m

It is autumn. Me think that some of the projection lens I use capture well the mood of autumn.

Do you like a good instrumental music? Listen to new beautiful music from composer Sergei Borodin. Click HERE This results in considerable field curvature. The optical elements are covered with single-layer chemical coating. The lens was manufactured at different plants for dozens of years.

Ko 120m

Being one of the first lenses converted in this version, the KOM looks a little awkward, but inspires respect for its appearance. KOM belongs to the class of inexpensive cinema projection lenses made according to the aplanatic scheme. Among the 35KP and RO lenses, there were also aplanates, which introduces confusion in the designations. The main difference between anastigmata and aplanates with equal parameters is their mass: aplanates weigh much less. The low price and prevalence in the secondary market with very serious optical parameters makes projection optics popular with many amateur photographers, but their use requires adaptation efforts. Specifications [Yakovlev Handbook, v. Geometric parameters of the original lens unit body:. Projection aplanates are the most expensive and difficult to fully adapt projection lenses: the installation of an internal diaphragm in their housing is not possible, unlike most planar anastigmata. This is due to the large light diameter of the inner surfaces of the aplanate lenses. Thus, in order to obtain a projection aplanat with a diaphragm, it is necessary to manufacture a new housing for its optics. KO lenses consist of only two glues, which makes life somewhat easier: a new lens unit can be made of 2 halves containing a gluing seat and connected by a diaphragm assembly. Because of this, aplanates with an installed diaphragm have a very characteristic thickening in the middle of the lens unit - it is in it that a large iris diaphragm is located with a diameter greater than or equal to the diameter of the rear lens. The lens unit for this lens was made of steel for lack of the best at that time. To blacken the inner surface of the lens unit, gas soot applied to an adhesive base was used.

Bokeh has tendency to swirl. Especially without the twist that.

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Being one of the first lenses converted in this version, the KOM looks a little awkward, but inspires respect for its appearance. KOM belongs to the class of inexpensive cinema projection lenses made according to the aplanatic scheme. Among the 35KP and RO lenses, there were also aplanates, which introduces confusion in the designations. The main difference between anastigmata and aplanates with equal parameters is their mass: aplanates weigh much less. The low price and prevalence in the secondary market with very serious optical parameters makes projection optics popular with many amateur photographers, but their use requires adaptation efforts.

Ko 120m

Do you like a good instrumental music? Listen to new beautiful music from composer Sergei Borodin. Click HERE This results in considerable field curvature. The optical elements are covered with single-layer chemical coating. The lens was manufactured at different plants for dozens of years. That resulted in different frame designs - it could be a turned aluminum unibody, as well as two coupled tubular parts.

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Review of the adapted cinema projection lens from Rodion Eshmakov Michael KOM 1: 1. System selection, polling ». You can make a curved lens yourself. Well, a couple more photos DIY lens. Lens don't have any focussing mechanism, so you must DIY or buy one. Here we go again Pictures MTF-charts Optical design. Distortion, of course, is absent. Far from the Madding Crowd by petrapetruta. Michael Mimosa Branch by Shayne Legassie. Convallaria majalis by Balazs Heizler. Specifications: Focal length Max.

Review of the lens KOM 1: 1. Has a curved field.

AdisX Period of use: 10 months Strengths: good sharpness of focussed part of image fast aperture shallow DOF interesting bokeh Weaknesses: very strong field curvature very low contrast flare no focussing mechanism Comments: I used this lens on full frame Canon 5DIII for portraits. This appears to be measured from the rear element however, not the rear housing, as I found in practice the distance was shorter. And, everyone knows, I am not a patient guy when it comes to new lenses. This is not a monocle, but a lens with an inverted front lens. The lens unit for this lens was made of steel for lack of the best at that time. A typical view of an adapted aplanat with a thickening on the body, in which a large-diameter multi-lobe diaphragm is located. The low price and prevalence in the secondary market with very serious optical parameters makes projection optics popular with many amateur photographers, but their use requires adaptation efforts. One of my favorite lenses. It is also suitable for macro when setting the aperture - its sharpness potential is very good. Lens don't have any focussing mechanism, so you must DIY or buy one. Well there is a story behind this one. Looking at the diagram of the lens, you can immediately notice that it has a curved field. Mimosa Branch by Shayne Legassie.