Life at the condo: Photography: Pinhole

I ended up taking a pinhole photography class on Sunday. I've seen a lot of what this guy does, and taken classes with him before, and was intrigued. You can make pinhole cameras out of anything but our class came with a Holga pinhole camera we got to keep. Sweet! Zeb presented a lot of information in the one-hour (or thereabouts) lecture he gave before we went on our walkabout to visit the Vera Katz Eastbank Esplanade, across the Hawthorne Bridge, to the Salmon Street Springs, a stop at the Ira Keller Forecourt Fountain, followed by a trip to the roof of one of the nearby parking structures, over to Pioneer Courthouse Square, back down to the Salmon Street Springs, and a return trip over the Hawthorne on our way back to Newspace. Some of the things I learned:

There's an app you can get to help determine your pinhole camera settings for the given light. It is called Pinhole Assist and costs $2.99.
For an idea of what your pic will look like, you can snap a quick pic using your DSLR. And in the event you don't, ahem, have an iPhone*, you can use your metering to figure out your shutter speed. (Okay, there is a little math involved here but still, something is better than nothing, right?)
Monsieur Z recommends ISO 100 film for the pinhole unless you plan on shooting at dusk during the blue hour (which is really about a half an hour), when you should use 400 or 800 and should expect minimum shutter speeds in the 15 to 30 minute range.
I am now the proud owner of a Holga pinhole camera. The f/stop is stated at f/192 - Yeah, 192, people. But with reciprocity failure, you factor in your settings one stop higher at (approx.) f/256. Holy schnikes, that is one tiny hole for light to get through.
My 50mm lens highest aperture setting is f/16 so I have to count up 8 stops to get to the f/256 recommended f/stop for the pinhole. For example, if I meter a shot using my DSLR with the following: aperture f/16 and ISO 100, and the camera tells me I need a 1/30 shutter speed, for the pinhole to take that same shot, I'll need to set my shutter speed to 8 seconds. Ah, math, I love you so. Also, I hope I calculated that correctly.
At f/256, the depth of field is virtually everything and you have infinite focus. However, all exposures will be long (or long enough to almost always require a tripod or that you use a shutter release cable) and things in motion will blur. Things in motion over really long exposures may entirely disappear. (Wicked cool, eh?)
The pinhole has a moderately wide angle, think 24mm lens on a full-frame camera.
For film, using the square frame on the camera you get 12 pictures. Using the rectangle frame, you get 16 pictures. You need to adjust the back of the camera accordingly once the film is loaded.

Of course, there were some attempts at pictures...