4K-resolution video capabilities are finding their way into more and more cameras these days, even though monitors that can display the resolution currently cost as much as one or two family sedans. Heck, even the tiny new GoPro Hero3 can shoot 4K, albeit at a semi-useless 15fps.

Although photographers and filmmakers can’t do too much with 4K footage at the moment, there will come a time when it’s the new 1080p. When that time comes, will we still be calling it “4K”? If the Consumer Electronics Association has its way: no.
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This is probably a “duh” fact for many of you, but one that some of you have perhaps never heard or realized before: Did you know that the flashes in the Canon Speedlite lineup are named after their maximum guide numbers? To figure out the power of your Speedlite, just take the model name and hack off the zero at the end to get the GN (e.g. 430EX has GN 43, 580EX has GN 58).
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