The wonderful thing about hang gliding is that the glider itself can be dismantled and carried around without a tremendous amount of effort. All one really needs is a car, and the desire to take up this sport.Ī hang glider will generate its lift off the ground through different means, depending on where a person is located. The common source of lift for a hang glider is from thermals. This is where the sun heats of the ground and, in turn, the hot air rises, creating an up draft of wind current. These columns are known as thermals.Įxperienced hang gliding pilots can recognize land configurations that will generate thermals and use them to their advantage, allowing them to sail higher, farther, and longer. Also, experience hang glider pilots have the potential to stay airborne for hours simply relying on the natural energy that surrounds them at the right time. Inexperienced hang glider pilots will likely have much shorter flights.Īnother source of lift for hang gliders is known as the Ridge lift. This is when wind meets a mountainside, or a cliff.
The wind that is moving steadily toward the mountain will hit the immovable object and be forced to change its direction, usually straight up. The ultimate battle of the bokeh, between the two champions of swirly blur: Lensbaby Twist 60 vs Helios 44-2īokeh refers to the way a lens handles points of light that are not in focus. From well-defined starbursts at f16 or higher, down to big, soft, blurry balls at f2.8 or lower, a lens is judged on how well these effects please the eye. Most of the big players in the lens manufacturing world are focused on creating the softest, roundest, creamiest blur possible when their lenses are used with a wide open aperture.
A few dare to be different, striving for a surreal, swirly blur effect that creates a unique, “down the rabbit hole” mood. Of course, these are the ones that interest me. Historyįirst, there was the Petzval lens. In 1840, it was by far the fastest lens of the time, with an aperture of f/3.6. It was a game changer in the portrait photography world, up until then exposure times of a minute or longer were the norm. The lens created a characteristic swirly blur and heavy vignetting around the edges.
In recent years, the folks at Lomography have created a modern day copy of the Petzval lens, but it will set you back a pretty penny and I have not personally had my hands on one. (As a morbid and fascinating aside, check out Memento Mori Photography. I'm not going to provide a link, because it may be disturbing for some readers – you've been warned! It was the Victorian practice of photographing deceased people. Because photography was so expensive, many people died before ever having a portrait made of them.
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