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Cake day: June 13th, 2023

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  • This is just one specific line on a particularly steep hillside in Stuttgart therefore it has been built as a rack railway. It’s known as the “Zacke” (German for tooth or prong) though officially it’s just “U10”

    There are two cars, going up and down at the same time, theres a station in the middle where they pass each other.

    The stops are long enough to take your bike off of the bike cart. It isn’t a particularly fast tram anyways. It also doesn’t run at night because it runs extremely close to houses and it’s comparatively loud.

    It’s a bit of an oddity because it’s part of the normal public transport network and included in your ticket. There are only 3 other rack railways in Germany and those have been built purely for tourism and have their own fares.








  • Well, the speed of your autofocus depends on a variety of different factors. Lighting conditions, subject contrast, lens, focal range, af drive, af sensor type and processor speed are those I’d consider of the top of my head.

    AF works slower in low light or low contrast situations because the camera has a harder time to figure out when the image is sharp. Lenses with a large focal range (like 150-600mm) need time to move the focus through that range, that’s why they often have range limiters for quick focusing. Ultrasonic AF drives are generally faster and quieter than “traditional” drives. Mirrorless cameras focus using the captured image and software and need good processors to get a quick focus. DSLRs rely on specialised focus sensors.

    Setting up a common test, eliminating all possible outside errors and testing a wide variety of cameras with an even wider variety of lenses seems unnecessary given that even most mid range cameras should have a pretty snappy focus these days.