Teleconverters are handy lens add-ons that multiply the focal length of the lens they are attached to. They can be mounted in between the camera body and lens (typically a telephoto lens) and increase the focal length of the lens to which they are attached.
When I was in college, I lived for a while in a crappy little rental house next to a cemetery. Neither I nor my roommate, Brad, knew how to cook anything, and we ate bologna sandwiches pretty much all the time. Eventually, someone gave us a cookbook so simple that even a half-starved English major could learn a few basic dishes--the first page actually had step-by-step instructions, with pictures, for making toast in a toaster.
Here’s a short and sweet educational video by the YouTube channel What Is… …
Leica made its name a very long time ago by creating the first practical 35mm camera to use standard cinema 35mm film. The rest, as they say, is history. A history filled with successes and failures alike, most of the latter coming in the early 2000s when the company was having trouble moving into the digital age.
In 2013, Leica has a couple of things to celebrate. For one, its no longer in financial trouble; and for another, the company is turning 100 this year. In light of that momentous birthday, here are a couple of short videos (the first one is above) by Deutsche Welle that take a look at Leica's past, present and future.
The term "bokeh" is often used in the world of photography to describe the quality of the out-of-focus blur in photographs. Do you know how it's pronounced?
If you're a fan of the Polaroid SX-70, this promotional video from the 1970s should stir up warm fuzzy feelings. If you've never used one, watching this might give you a better idea of why so many are obsessed with it.
Here's an interesting behind-the-scenes video series that shows the creation of a Canon 500mm f/4.0L IS lens. It's a neat look at the guts of glass, and an opportunity to see how exactly the various components of a lens are created and put together.