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  1. Aperture. It’s an iris mechanism, which controls the amount of light that gets through the lens. It also affects the depth of field. The relative size of the aperture is described by the f-number. The f-number (or f-stop) is the ratio of the diameter of the hole of the aperture and the focal length.

  2. A small f-number means the aperture is open more. A larger f-number means it’s open less. For example, f/1 lets in much more light than f/6. ISO: How sensitive your camera is to light. A higher ISO will be more sensitive and photos will generally be brighter. A lower ISO less so.

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  4. Oct 04, 2018 · Aspect ratio. Aspect ratio defines the relationship between an image’s lengths, represented as width:height. It is predetermined by the dimensions of the camera’s sensor, but can be altered in post processing. The most common aspect ratios are 3:2 (full-frame, mirrorless, 35mm film) and 4:3 (most DSLRs). Recently, 4:5 has gained popularity ...

  5. Crop Sensor. A ‘Crop’ sensor refers to any sensor smaller than the traditional 35mm film frame, also known as ‘full frame’. The common types of crop sensor include APS-C and micro 4/3 (MFT) systems. (See our guide to full frame vs crop to learn more.) There are several pros of choosing a camera with a crop sensor.

  6. Digital photography terms: I. Image – Bitmap or Raster image. Image Circle; Circle of Illumination; Circle of Good Definition. Image plane; film plane; sensor plane; Focal plane. Image – Raster or Bitmap image. Image Sensor; Digital Image Sensor; Sensor; Image stabiliser; Image stabilisation. Definition: Interchangeable photographic lens.

  7. Aug 22, 2018 · A lens with an angle of view that is wider than that of a normal lens, or that of the human eye. A wide-angle lens has a focal length shorter than the focal length of a normal lens and sometimes has distoration at the end of the image. Standard-wide angle lenses are 28-35mm while super-wide is anything wider than 28mm.

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