And now for something completely different...
Soviet MC MTO-11CA 10/1000mm M42 mirror lens mounted to Pentax Q through K-Q and K-M42 adapters.
This is the Maksutov-Cassegrain mirror lens with 1000mm focal length so on Pentax Q it gives about 5500m equivalent.
Photographs:
1: Full scene taken with lens (to obtain this size of the object on the photo the photo was taken from about 8-10m distance).
2. Crop of the center part of the photograph (1:1). The aperture in the lens is constant so I show only one exemplary photograph.
3. Pentax Q with mounted lens (or maybe the lens with mounted Pentax Q
).
The focus point was set to centre stick of Bell Sioux cockpit (or I have tried to set it - for this focal length it is challenge).
Photographs were developed in LR. Due to high sesitivity the some denoise and sharpening was used.
As you can see the lens unfortunately gives ugly IQ on Pentax Q. The IQ on the APSC Pentax was also not too good (but much better).