![]() When one removes the rear lens block the unity is broken. When in assembly line the whole unit is made to fit the focusing mount and in that way focused to infinity. The length: This tube is a compromise, The original Hélios 44 lens unit is considered a unit and so is treated. All other uses are although completely feasible. Those which have no slots have the rear block irremovable and telephoto use is impossible. You can recognize those ones through the existence of the rear block removing slots. To do so, you will need a proper coupling ring with two external threads.īut take care! Not all Helios 44 can be used in all the described proposals. How to use the lens combination together the Helios and bell. But your eye can be replaced by the camera and that way you can obtain various microscope magnifications, according to the used camera lens. We begin with a great quality hand observation loupe.Īn acrylic bell with a screw mount in the top puts the Helios lens in the right focus position, the acrylic do the best in homogenize the external light to the object to be seen or photographed. An 11mm metal disc is glued in a UV or lens protection filter in 49 or 52mm according with the lens. Build a filter with a center darkened spot. In order to transform the Helios lens in a soft portrait we follow the famous Thambar solution. In the normal position with the tube one macro range, therefore, three macro possibilities. With the reversed lens, you have two macro ranges, with or without tube. But now we introduce two more rings a reverser and a filter ring, putting the lens at a reverser way. The introduction of a tube in the system immediately extends the close focusing range of the normal lens so you have the macro possibilities. Telephoto, Macro and Macro reversed in two magnifications Second proposal: Use telephoto concept for macrophoto. The above drawings show us the Helios 44 with a proper sunshade and used as normal or telephoto condition. In order to replace the front unit of three elements in a useful position to focus correctly, we need a corrector tube, whose construction is shown in the following picture. ![]() The front block has a focal distance of 116 mm an excellent choice for a short telephoto or a portrait lens. When you remove the back unit, the front unit remains in the lens body retaining its diaphragm and focusing abilities. This schematics is for illustration purposes. In the above drawing we see the assembly details of the Helios 44/2, which is similar to all previous Helios 44 lenses. Now we will show some of those possibilities, but first let’s be familiar to those interesting device.Īs you have seen, this lens is a six element, four groups symmetrical formula of Gauss type. Its quality is not limited to the excellent pictures it is able to do, but its unique mechanical construction gives us great possibilities of other uses. ![]() The Helios 44 lens is a very interesting lens in its concept. Helios 44 pre set or Auto variations - The Basis. ![]()
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