Resolution
These two pictures are demonstrating good resolution and bad resolution. The right is good resolution and the left is bad resolution.
Resolution: The number of pixels that make up an image. An image that is 2048 pixels in width and
1536 pixels in height has a total of 2048×1536 = 3,145,728 pixels or 3.1 megapixels. One could
refer to it as 2048 by 1536 or a 3.1-megapixel image.
Megapixel: One million pixels gridded into a pattern in the shape of a rectangle.
Pixel: The smallest unit of a digital image that can be represented or controlled.
1536 pixels in height has a total of 2048×1536 = 3,145,728 pixels or 3.1 megapixels. One could
refer to it as 2048 by 1536 or a 3.1-megapixel image.
Megapixel: One million pixels gridded into a pattern in the shape of a rectangle.
Pixel: The smallest unit of a digital image that can be represented or controlled.
Below is showing depth of field using aperture.
Aperture: Diaphramatic opening in lens that increases or decreases in size to control
amount of light that passes through. They are measured in fStops: f2.8, f4, f5.6, f8, f11, f16, f22.
Shutter: Curtain that opens for a specified amount of time, or “shutter speed” to
control the amount of light that passes through. These are measured in fractions of seconds.