It's a professional color negative film. The things I remember about the category of professional medium format films are that they cost more and were refrigerated in the store because their precisely calibrated color became intolerably less professional outside the correct conditions.
Somewhat at random, I picked the AirPods Pro Box Camera for the trial.
I measured exposures at ISO 64, based on a four-year-old discussion on Photrio. The negatives look normal. The film does show its age. It is as slow as predicted, with noticeably low contrast. The color balance is somewhat muted but otherwise normal, if it's correctly exposed. When overexposed, it rapidly shifts toward cyan and underexposed toward magenta. With a wide angle like this camera provides (77 degrees), vignetting in the distant corners is a common issue. The centers are likely to be overexposed directly under the pinhole with my casual approach to timing exposures. That makes for some interesting negatives, but my friend Adobe and I could bring them around without extreme measures. I wouldn't call the color natural, but come on, it's pinhole photography, I'm not trying to be natural. My goal is to make the color not distractingly wrong, and I'm fine with some painterly freedom to the palette.There is only one opening on that long stretch of aluminized clapboard, covered with perfectly matched steel siding.

Some colors show up at the YMCA, but it's mostly great slabs of grey.


The Brio Building strikes me as a disjointed stack of flat boxes

The AirPod Pro Box Camera has a .28mm pinhole 40mm from a 6x6cm frame. The vintage Fuji was developed in a Cinestill liter powder C41 kit.