A bunch of two lenses for macro photography
There is an easy way to get the ability to take a macro shot – this is to use reversing rings. Reversible rings are also called wrap rings.
Reversible rings should not be confused with a reverse macroadapter. The reversing adapter allows you to install one lens backwards on the camera for macro photography. Reversible rings allow two lenses to be joined using their front thread.
With such a docking, the reversing ring simply allows you to connect two lenses, the ring is screwed into the thread of the light filter with one side into one lens and the other side into the other lens, then the bundle is attached to the camera. It turns out that one lens is working on the camera in its normal position, and the second lens is working in the reversing position, as it is attached to the first backwards. Roughly speaking, the second lens is a kind of macro lens for the first lens mounted on the camera.
With such a bundle you can achieve a very large increase. Usually, a long-focus lens is used as a lens that operates in the normal mode, and a high-aperture short-focus lens is used as a second nozzle lens.
In this article, I used the Jupiter-37A 135mm F / 3.5 lens as a long-focus lens, and the Helios-44-2 as the second nozzle lens. To dock lenses you just need to buy a special reversing adapter. Such an adapter can be easily made yourself with the help of two light filters. Below, I give an example of how I made myself such an adapter-ring.
To start, I had to pull the glass out of the light filter, which served as the docking part for the Helios-44-2 lens, which has a thread of 49mm.
The second filter was a standard 52mm filter, since the Jupiter-37A has a front filter with a diameter of 52mm.
Thus, I created a reversible adapter for connecting lenses with a front thread of a 52mm and 49mm light filter.
Important: when choosing a reversing ring, it is necessary to know the diameter of the front thread of the two lenses, with the help of which a bunch for macro photography will be created. For example, in this case, the Jupiter-37A lens has a front filter diameter of 52mm, and the Helios-44-2 lens has a front filter diameter of 49mm, because for the bundle you need a reversing ring 49-52.
After you have bought or made a reverse ring yourself, it is screwed into one and into the second lens – this is very easy to do. For example, I installed a Jupiter-37A lens on a camera, screwed a reverse ring into it, and then simply screwed the Helios-44-2 lens on Jupiter-37A.
After that, you can start the shooting itself. True, the shooting has a number of subtleties:
Focusing is carried out using the focus ring of the lens mounted on the camera in the normal position. If an autofocus lens is used as the main lens, the possibility of automatic focusing is retained. In this case, the presence of internal focusing is highly desirable.
The control of the depth of field is carried out using a lens aperture device attached to the camera. If you close the aperture lens aperture, you can get the strongest vignetting.
This bundle gives a strong vignetting, diaphragming may not help, but only strengthen the vignette.
When using manual lenses on some cameras, exposure metering and / or focus confirmation are not available.
Such a bunch of lenses is very convenient to use with a tripod in the Live View focus mode.