How Digital Camera Works

This video from DECONSTRUCTED gives an easy to understand explanation of how modern digital photo cameras work to produce images. Their main feature is to transform light into electricity. The light source emit photons that come to the camera through its lens. The lens diaphragm allows how much light comes to the camera and it is called aperture control. After the diaphragm the light hits a mirror and then through a prism to your viewfinder. The prism is used to make the image you see in the viewfinder right side down. When you press a shutter release button, the mirror lifts and lets the light reach the image sensor through the shutter which controls the length of time the sensor is exposed to the light. The image sensor is a set of millions cells that capture photons and generate electrons which produce an electrical charge of different intensity (depends of how much light hit the sensor). The Central Processing Unit of your camera calculates the electrical charge and converts its parameters into a digital form of binary system.

Wedding Portrait Techniques Indoors

Bruce Dorn explains and shows in this video tutorial how he uses speedlights with and without softboxes and umbrellas to shoot a bride and a groom in a large hall. He has a big shoot through umbrella equipped with three speedlights. His master flash on the camera (master) controls other speedlights via wireless radio transmitter. He uses a small softbox as his key light. If you have just one speedlight, detach it from your camera (you may use a Canon speedlight cord) and point it to some reflective surface. You need to mind the color of this surface because it is going to affect the color temperature of your light coming to the subject and if it is a brick wall, you will get some red tint.

In the second part Bruce shows how he photographs a dance by using two bare speedlights pointing at each other so that the couple stays between them and Bruce can take shots from all four corners.

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Check this great list that showcases resources useful for both amateur and
professional photographers:

http://photographydegrees.org/must-see