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A genetically modified organism (GMO) or genetically engineered organism (GEO) is an organism whose genetic material has been altered using genetic engineering techniques. These techniques are generally known as recombinant DNA technology. With recombinant DNA technology, DNA molecules from different sources are combined in vitro into one molecule to create a new gene. This DNA is then transferred into an organism and causes the expression of modified or novel traits.

Genetically modified (GM) foods are foods produced from GMO that have had their DNA altered through genetic engineering. GM foods were first put on the market in the early 1990s. The most common modified foods are derived from plants: soybean, corn, canola cotton seed oil and wheat.


2008-05-23

Say Cheese With Canon EF 50mm F1.2L USM AF Lens  

Known remains a serious glass for serious photographers, the EF 50mm USM is currently the grate autofocus lens in its group, thanks to its f1.2L EF 50mm lens. Canon EF 50mm strong evidence for Canon heritage of optical quality. Every feature of this EF 50mm lens shows professional excellence from its wide 72mm filter diameter to its dust and moisture sealed building.

Full frame digital camera users to enjoy the benefits of f1.2L Canon 50mm focal length, in taking the waist-up portraits in Maintaining appropriate subject distance. Photographers can their high shutter speeds to shoot in lower light through EF 50mm USM and to prevent blurring caused by movement or camera shake. In addition to a large aperture, the lens has also blazingly fast autofocus speed and reaction time. The EF 50mm USM is an ultra-large aperture standard lens preferably suitable for portrait photography. In addition to a low-depth area with a maximum of F1.2 aperture, the lens allows the use of fast shutter speeds to reduce motion blur and carry out shooting in low light.

A full-time manual focus function allows photographers to fine - tune the sharpness their pictures, even if the lens is for the auto focus and a glass moldings (GMOs) A spherical element ensures maximum image quality by reducing spherical aberration and linear distortion.

The EF 50mm F1.2L USM lens employs a large, highly spherical Lens element extremely refractive glass to minimize aberrations during focusing and holds a graere image quality throughout the shooting rang. In addition, the lens of the Ring USM (ultrasonic motor), high-speed CPU and an optimized AF (autofocus) algorithm allows silent and extremely precise autofocus operation.

Intended to address the different needs of superior expert and amateur photographers, the lens features brilliant Full-time manual focus, which allow users to send hand in the AF mode, and a dust and moisture proof construction, certain event under harsh situation.

ALl in all, the EF 50mm USM from Canon lenses is hard enough to the needs of demanding photographers for sure.

Article Source: http://EzineArticles.com/?expert=Jayson_Pablo

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