Rex Feng xta

Digital SLR photography allows you to control how light is exposed to your camera's sensor. In manual mode, you are given control of ISO, aperture, and shutter speed. The way that these three elements interact with each other produces your photograph.

ISO is the camera sensor's sensitivity to light. Lower values are less sensitive, whereas higher values are more sensitive to light. With a low ISO value (e.g. 100), your photographs will look clean (without camera grain). ISO 100 is recommended for a sunny day. With a higher ISO value (e.g. 1600), your camera will introduce undesired noise and grain. In low light settings, using a high ISO value helps you get your desired shot.

Aperture measures the amount of light that the camera lens lets through. Lower aperture values (e.g. f/1.4) correspond to more light, while higher aperture values (e.g. f/5.6) allow less light to pass through the lens. In addition to the amount of light, aperture also controls the amount of blur for out of focus areas. Lower f-numbers

	matz
	kent beck
	roy fielding
	martin fowler
	tim berners lee
	david heniemer hansing
	john resig
	jesse james garret
	_why the lucky stiff
	marc anderseen

	desc "Create a bunch of seed data for artists and songs"

	task :seed_artists_and_songs => [:environment, :clear_artists_and_songs] do
	# Build Song Off Artist
	# Given a Song called R.E.S.P.E.C.T
	# build the Aretha Franklin Artist

	s = Song.create(:name => "R.E.S.P.E.C.T")
	s.build_artist(:name => "Aretha Franklin")
	s.save

	#For processing iterations

	Array#each
	Calls block once for each element in self, passing that element as a parameter.

	====================================================================================

	#Return array / object after iterations

	Enumerable#map / Enumerable#collect

	CREATE TABLE user (
	id INTEGER PRIMARY KEY,
	first_name TEXT,
	email TEXT
	);

	CREATE TABLE quiz (
	id INTEGER PRIMARY KEY,
	user_id INTEGER,
	name TEXT

	INSERT INTO user (id, first_name, email)
	VALUES ( 0, "Josh", "[email protected]");

	INSERT INTO user (id, first_name, email)
	VALUES ( 1, "Aaron", "[email protected]");

	INSERT INTO user (id, first_name, email)
	VALUES ( 2, "Matt", "[email protected]");

	INSERT INTO user (id, first_name, email)