Absolutely, and it's a shame that more people don't know about it. Focussing and metering are entirely separate actions that shouldn't be combined, and the associated advantages for focussing and recomposing are the icing on the cake.
It is. Deleted users will leave gaps, but it's still an accurate representation of how many users have ever registered before you, including spammers and inactive users and absolutely everyone.
It's where you replace a colour in an image with something else. It's most commonly used when you sit someone in front of a green screen, then replace the green with an image—like when they interview someone on the news and it appears that they're in a room with a beautiful London view, as...
Technically yes, but you don't need to be changing temperaturesit's just from moisture in the air. That's why people put silica gel in their camera bags.
I would always be polite to a policemanout of self interest if anythingbut it's pretty disturbing that it's become accepted that the power relationship is such that you need to massage a police officer's ego in order to stop him abusing his power against you.
The cop leaps to an absolutely ridiculous conclusion (selling photos to Al-Qaeda? What the hell?) and the idea that you should have to walk on eggshells not to offend a policeman in order not to be arrested for nothing is a pretty terrifying one, sorry.
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