Light Painting With A Soviet-Made Lens

I built a set consisting of black fibreglass on a torch with a colour filter, a second torch that I prepared with a silicone ball and a small ultrasonic fog machine.

I placed the fog machine in a shot glass filled with water. Everything was attached to a tripod with the help of tape and a clamp.
As you can see on the cover picture, I tried to create a kind of big bang.

The fog machine is ideal for such small sets. It also keeps the air in the room clean. The power supply is provided by a power bank. At just over 3 euros, it is also affordable for everyone.

Here is a link to the product

However, I only wanted to test the bokeh of the lens in order to be able to consciously use the knowledge gained later. The shape of the bokeh changes greatly at different apertures. At f/2.8 and f/16, the light points are round. At f/11 they become hexagonal and at all other settings sawtooth-shaped, as can be seen in the pictures above.

After testing the bokeh, I played a little with the CRT (Camera Rotation Tool). The result was the image above.
This in turn gave me further ideas, which I could not realise with a fixed focal length without changing the lens.
Since it doesn't fit the topic today, I'll report on it next Sunday. So stay tuned!