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50mm DC axial cooling fans come in a variety of speeds and airflow capacities and can be equipped with additional features such as ball bearings or sleeve bearings for added durability. Such as 50mm case fans, 50mm CPU fans, and 50mm PC fans are commonly used in electronics and server rooms to ensure optimal cooling and prevent overheating.

The CANON EF 50MM f/1.4 USM is a standard lens featuring superb quality and portability. Two high-refraction lens elements and new Gaussian optics eliminate astigmatism and suppress astigmatic difference. Crisp images with little flare are obtained even at the maximum aperture. Max. Diameter & Length - 73.8mm x 50.5mm

Fast enough for shooting in just about any type of light, this is an ideal first lens; perfect for full-length portraits, travel photography or any type of available-light shooting. The Nikon 50mm f/1.4D AF Nikkor lens delivers distortion-free images with superb resolution and color rendition. Accepts 52mm filters.

This is considered the standard lens for use with Canon SLR cameras.What's in the box: Canon Normal EF 50mm f/1.8 II Autofocus Lens, E-52 52mm Snap-On Lens Cap, Lens Dust Cap E (Rear) and 1-Year Warranty. - 50mm standard lens with f/1.8 maximum aperture - Traditional Gauss-type optical design is extremely sharp - Focuses as close as 18 inches for extreme close-ups - Ideal for natural-looking shots; excellent color balance - Measures 2.7 inches in diameter; 1-year warranty

A 50mm DC blower fan is a strong cooling tool that can fit in a small space and is utilized in a variety of industrial applications. The fan is made of an impeller design that produces high-velocity airflow, a compact yet powerful motor, and other components that make it perfect for cooling electrical equipment or small areas. 50mm DC blower fans are a common option in sectors where cooling is crucial because of their efficiency, toughness, and extended life expectancy.

Ideal for travel, event, environmental and general photography in a wide variety of conditions, with superb optical formula and an ultra-fast f/1.4 maximum aperture.

The new Zeikos High Definition .40x Ultra Wide Angle Fisheye also includes a seperate macro lens Converter Lens increases the versatility of your existing lens to provide AMAZING ultra wide angle views. And it's so easy to use! Additionally the built-in detachable macro lens allows you to take extreme high resolution close-up shots! .This lens is espescially great for SHOOTING sporting events and large family portraits.