Digital Models Extreme

Admin | January 15, 2012 | Comments Off

Digital Models Extreme

Digital Models Extreme

Digital SLR cameras, along with many film cameras, are limited in the range of light from darkest shadows to brightest highlights they can capture. High Dynamic Range(HDR) photography is a combination of camera technique and photo software to produce images showing the extremes of light and dark in a scene.

Even though much of the exposure manipulation is done by the photo software in processing the HDR image there is often more work required of the photographer in analyzing the various exposure regions in a scene and ensuring each one is captured properly exposed in one of the images. The key is a set of digital photos that are exactly the same in every aspect except for a spread of exposures to cover the whole range of light in the scene.

Exposure Mode

For simple situations, many digital cameras and particularly DSLRs have an auto bracket feature. The photographer sets the number of images and the number of Exposure Value (EV) steps between them then holds shutter down while the digital camera takes that number of images. If the exposure mode is Aperture Priority (Av) then the shutter speed alters to produce at least one under exposed, one correctly exposed and one overexposed digital photo, according to the camera’s inbuilt metering system. The camera is looking to expose for the average mid-tones with the extra shots giving a better exposure for the shadow and highlight areas.