This week, Sofia asks us to create a quiz, a collection of objects that might be hard to identify. She writes, “Think of anything that looks ambiguous, difficult to understand or unusual, look for details instead of the whole thing, conceal what might give away what your subject with editing, but most of all, have fun!“

I enjoyed modifying some older images to “mystify” them. Each object is in a different category, identified in the photo caption. At the end of the post, I’ll identify each one so you can check your guesses without staying in suspense.

My opening photo shows something found in nature. The hint: It holds a hundred stories of ancient flowing water, yet it hasn’t moved an inch in millennia.

The next category is Musical, featuring an item I found at the Musical Instrument Museum in Phoenix. It needs human lungs to make a sound, but the paper picks the piece.

The saguaro in the background gives away another Phoenix-area location. It catches the desert rain today, but its original purpose was far drier and much harder work.

For Illusion, we visit another Phoenix spot—a room where standing in the wrong corner completely rewrites the laws of human anatomy.

The last category is Light. Unlike the others, this subject isn’t anywhere near Phoenix. Two lights momentarily share the same frame, though they may have nothing in common.

Now for the reveal. I photographed each subject around the Phoenix area during our winter stays in Buckeye.

#1. Natural: On a hike in Spur Cross Ranch Conservation Area, I saw a rock covered in algae—and on closer inspection, it was actually a conglomerate, a natural mix of pebbles and sand that once tumbled along an ancient streambed. Over time, more sediment buried the pile, pressure squeezed everything together, and minerals in water acted like glue, cementing the rounded stones into one solid mass. What looks like a single rock is really a snapshot of Cave Creek’s tumbled stones, preserved in place for millions of years and now wearing a thin coat of desert green algae.

#2. Musical: According to the placard on display, this instrument was manufactured in Germany, c. 1900. Mechanical Mouth Organs were first sold in the 1870s, and player trumpets like this one used paper music rolls in much the same way as a player piano—except the performer had to supply the air by blowing into the mouthpiece. In the United States, they were marketed as phonographic cornets or trumpettos.

#3. Ancient: On a hike in Cave Creek, the guide and hike leader told us about the history of these purposely hollowed stones—and once you know what you’re looking at, the metate and mano make perfect sense. Generations of Indigenous people used the larger stone as a grinding surface and the smaller hand‑stone to crush mesquite pods, seeds, and later corn. The shallow basins weren’t carved so much as worn into the rock by centuries of use, each pass of the mano slowly shaping the surface.

#4. Illusion: In Scottsdale, the Museum of Illusions presents visitors with the settings and instructions to create photographic illusions—and this striped room is one of the most effective. A short wall bisects the space, and a full wall‑sized mirror mounted on that divider lets people stand behind it and pose. By balancing on the leg hidden behind the wall, the mirror creates the effect of floating in midair, and hiding the face behind the divider completes the Illusion of a disembodied torso. It’s up to the person behind the camera to keep the shot level and make sure the stripes on the wall and the mirror line up cleanly, the final touch that sells the trick.

#5. Light: On an evening in December 2020, a celestial event brought me out for some night photography—and the Great Conjunction of Jupiter and Saturn did not disappoint. The two planets appeared unusually close in the sky, a rare alignment that made them look through my 300 mm lens like a paired set of lights hanging over the horizon. A closer look at Jupiter reveals three of its Galilean moons—Io, Ganymede, and Callisto—lined up beside the planet, tiny points of light that completed the scene. Saturn looks much less sharp in the image because the planet’s orbit carries it millions of kilometers farther from Earth, making it a tougher target for long‑lens detail.

Let me know in the comments how well you did on my little quiz. If you’d like to take a closer look in 2K HD, or check out the image metadata, my Flickr gallery is here.

Last week’s challenger was Ritva, and her topic featured one of my favorite photographic passions—image editing. I can spend a few minutes correcting an image’s defects, or hours creating a vision I imagined that didn’t match what the camera recorded. Next week, it’s my turn to host, and my challenge will go live on Saturday, September 5, at noon Eastern Time.

If you’re sharing a Lens‑Artists Challenge response for the first time, welcome—we’d love to visit your post. To participate, publish your take on this week’s theme, link back to this page, and add the Lens‑Artists tag so others can discover your work. You’ll find more details on how the challenge works here.

John Steiner.