Focusing Basics | Aperture and Depth of Field. Depth of Field Depth of Field (DOF) is the front-to-back zone of a photograph in which the image is razor sharp. As soon as an object (person, thing) falls out of this range, it begins to lose focus at an accelerating degree the farther out of the zone it falls; e.g. closer to the lens or deeper into the background. With any DOF zone, there is a Point of Optimum focus in which the object is most sharp. There are two ways to describe the qualities of depth of field - shallow DOF or deep DOF. Shallow is when the included focus range is very narrow, a few inches to several feet. Deep is when the included range is a couple of yards to infinity. Aperture The aperture is the opening at the rear of the lens that determines how much light travels through the lens and falls on the image sensor.
Small vs Large Aperture Manipulating the aperture is the easiest and most often utilized means to adjust Depth of Field. Aperture Range Distance from the Lens Conclusion You might also like: Holga 120 Lens Kit. Buy Holga Complete Color Filter Kit for Holga Film or Digital - HolgaDirect. National Geographic Photo Contest 2011 - Alan Taylor - In Focus. National Geographic is currently holding its annual photo contest, with the deadline for submissions coming up on November 30.
For the past nine weeks, the society has been gathering and presenting galleries of submissions, encouraging readers to vote for them as well. National Geographic was kind enough to let me choose among its entries from 2011 for display here on In Focus. Gathered below are 45 images from the three categories of People, Places, and Nature, with captions written by the individual photographers. [45 photos] Use j/k keys or ←/→ to navigate Choose: Many people pilgrimage to Uluru, but what is seen there often depends on where you've come from. Eruption of the Cordon del Caulle. Beluga whales in the arctic having fun. This is a streetcar in New Orleans traveling back towards The Quarter on St. This image captures almost 6 hours of climbing parties on Rainier going for the summit under starry skies.
Russia, polar region of West Siberia, Tazovsky Peninsula. Digital Photography Techniques. Make the most of your digital camera by learning new photography techniques. These include tips for photographing specific subjects, using different creative styles, and improving image quality. Using Your Camera Subjects Photo Lighting Composition The Rule of ThirdsUsing Diagonals for Dynamic PhotosNegative Space - Sometimes Less is More Image Stacking & Multiple Exposures While every photographer eventually develops their own style, learning common techniques can help you get to this stage more easily. View in other languages: Português Русский Deutsch Français Italiano. Buy Holga 120N Medium Format Film Camera Online - HolgaDirect. Yet Another Colorization Tutorial.