This page shows the different variations of the Lustrzanka from an Icons8 icon pack. Feel free to resize and recolor the icon, and then download the icon in PNG format for free. Icons are available in PNG and vector.
There is a square with curved edges. On the top of the square there are two areas that protrude. There is also a circle inside the square to depict a camera lens as well as a small dot in the upper right corner.