1) What is an Aperture?
The aperture is an opening (a hole or a gap) formed inside the camera lens by the blades of the shutter. A camera aperture works much like the iris of the eye, widening or constricting to control the amount of light hitting the light sensor. The aperture setting controls how much light can enter the camera at a given setting.
What’s the EV setting anyway? EV stands for Exposure Value (also commonly called “exposure compensation.”) The camera doesn’t always get exposure right–so you can increase or decrease the exposure of your photos up or down a few stops with this feature. You’ll see the setting indicated on your camera by a symbol similar to the one above.
Take a test shot. If the shot looks under or overexposed, you can quickly adjust the exposure up or down via the EV setting without needing to fiddle with other settings like ISO.
But the exposure compensation feature on your camera isn’t just a quick fix for exposure problems.
You can also deliberately use the EV setting to create interesting and artistic effects.
If you want to make a big difference in the quality of your photos, you need to think about how to compose your photo before you press the shutter button. Composition is all about thinking about how to put the visual elements of your photo together in the most pleasing way. By following a few simple composition rules, you’ll create much more engaging images.
When you’re a new photographer, learning these simple rules will help you take better photos. You may want to capture a scene and be unsure how to approach it to get the best photo possible. But when you have some composition guidelines in mind, it makes it a lot easier to take a great shot, even if you’re a novice.