Mokka mit Schlag

I’ve been out of academia for a few years now, but lately I’ve been watching a lot of random Coursera courses. One meta-thing that’s become apparent is that presentation technology has moved forward since I stopped teaching. So far I haven’t been able to figure out exactly how these courses are put together, and Coursera seems surprisingly tight-lipped about exactly what they’re doing. In particular there are three parts:
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Let me know if you see any problems.

Making a quality camera strap suitable for large, 400mm+ lenses must be harder than making high quality 400mm lenses, because we have many choices for excellent lenses in the 400mm range; and no good reliable straps for those lenses. You may recall that a couple of years ago a Black Rapid RS-7 strap disconnected and dropped my Canon 7D and 70-200 f/2.8L IS II lens onto the street, severely damaging the camera. It ended up costing me several hundred dollars in repairs. That was not the first time the Black Rapid strap dropped my camera onto the ground; but unfortunately I was too stubborn to learn my lesson the first couple of times my camera fell off the strap because the camera wasn’t actually damaged.

Since then, I’ve been using a Carryspeed strap. The original plate was prone to disconnect, and it too dropped my camera on the ground once and almost dropped it several times more. Fortunately, the one time I didn’t catch it before it hit the ground, I was on the beach and the camera fell into soft sand. Since then, Carryspeed has redesigned the plate; and the new plate seems to be somewhat more stable and reliable, so that’s the strap I’ve been using. However, on a recent trip to Costa Rica, a new failure mode appeared. The Neoprene shoulder strap tore several days into the trip, not so badly that the camera fell; but badly enough that I wasn’t comfortable using it any more. Unfortunately I had not brought a spare camera strap with me so I had to shoot off a tripod for the rest of the trip, which was especially inconvenient with a group in the tight spaces of some of the rain forest trails.

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I’m trying out Dragon Dictate 3 for the Mac. Is it ready for primetime? You tell me:

One of the most impressive features of brains – especially human brains — is the flexibility to learn almost any kind of task that comes its way. Given apprentice the desire to impress his master and a chicken-16 past, and his brain devotes its massive resources to distinguishing males from females. Given unemployed aviation enthusiast a chance to be a national hero, and his brain learns to distinguish enemy aircraft from local fly boys. This flexibility in learning accounts for a large part of what we consider human intelligence. All many animals are properly called intelligent, humans distinguish themselves and they are so flexibly intelligent, fastening the neural circuits to match the task at hand. It is for this reason that we can colonize every region on the planet, learn the local language were born into, and master skills as diverse as playing the violin, high-jumping and operating spatial cockpits.

–David Eagleman, Incognito, p. 71, as heard by Dragon Dictate 3.0

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As dusk was approaching we drove into the small city of Orotina. In the trees encircled in the town square, we found a lot of sloths, apparently released pets. But the real prize was a Black-and-white Owl our guide, Richard Garrigues, had staked out:

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From La Ensenada, we drove back to San Jose; but with quite a few stops along the way. The lunch break in Tabaris added several beach species to the trip list, including Laughing Gull and Black-crowned Night-heron; but these are all long-distance migrants or widespread species of herons and gulls, so no lifers there. However I did have a life reptile, the Black Ctenosaur:

These things are huge! I had great trouble getting far enough away to get one in the frame with my 400mm lens.

After lunch we stopped along a dirt road near the Tarcoles River, where we found #944, Scarlet Macaw! The last is one of those spectacular birds you think of when you think of the tropics. We only saw them at a distance, but they were pretty nonetheless.
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