A Neutral DensityNEUTRAL DENSITYAn optical filter that absorbs light of all wavelengths to the same extent, resulting in an overall dimming without affecting the colouration. It enables a longer exposure time or larger aperture than otherwise possible, and thus is a favourite in landscape and portrait photography. In landscape photography it is used to lengthen the exposure time in order to create delibirate motion blur. In portrait photography it is used to shoot at larger apertures which produce shallower depth-of-field and consequently more background blur. (ND) Filter blocks out a controlled amount of light and this allows you to use a slower shutter speedSHUTTER SPEEDAperture, shutter speed and ISO form what is known as the exposure triangle in photography. Shutter speed is the length of time that a single frame is exposed for, more specifically how fast the shutter opens and closes to permit light entering the lens, to reach the sensor. A slow shutter speed means a longer exposure time useful for motion blur like the silky look of flowing water, whereas a fast shutter speed means a shorter exposure time useful for freezing the appearance of motion in images like a hummingbird in flight. It is measured in seconds starting at 1 second and halving our doubling in time.
For example: 1/2s, 1/4s and 1/8s are all fractions of a second with 1/2s being the longest exposure time, 1/4s half of that and 1/8s another half etc. or wider apertureAPERTUREAperture, shutter speed and ISO form what is known as the exposure triangle in photography. Aperture refers to an opening inside the lens, similar to the iris of your eye, that changes in diameter to control the amount of light that enters a camera. Aperture is expressed in f-stops: the lower the number, the larger the aperture, e.g. f/1.4 is larger than f/8. A larger (or wider) aperture allows more light to pass through the lens to the sensor (film) as a picture is taken, particularly useful in low-light conditions. A larger aperture also produces a shallower depth-of-field, and thus more background blur. in brighter light - settings which may normally cause over-exposureEXPOSUREExposure is controlled by three elements: Aperture, Shutter Speed and ISO. Achieving the correct exposure is similar to collecting rain in a bucket, up to an optimum level. The rate of rainfall is out of your control (light), yet you can control these three factors: the bucket’s width (lens aperture), the duration you leave it in the rain (shutter speed), and how effective your bucket is in collecting rain (ISO). These three elements work together to control the amount of light per unit area, preventing underexposure (too dark) or overexposure (too bright), giving you a natural looking image. in such lighting conditions. The possibility to use a slower shutter speed gives you some creative freedom and allows you to deliberately create motion blur in your compositions. Similarly, the possibility to make use of a larger aperture allows you to capture with a shallower depth-of-field than would normally be possible.A variable ND Filter
A variable ND Filter allows you to control the amount of light being blocked out, by means of turning the adjustment ring. This filter is capable of reducing light transmittance by anything from 1 to 7 stops, thus allowing you more creative freedom in achieving the exact effect you desire.
The Benro 1-7 Stop Variable ND Filter is an excellent tool for enhancing your compositions. It is made of ultra-high quality optical glass which renders extremely high-resolution results with minimal chromatic aberration, ghosting and flareFLAREOccurs when a point light source such as the sun or an artificial light (that is brighter than the rest of the scene), hits the front element of a lens resulting in a lack of contrast, haze, or unwanted semi-transparent objects being present in the image. You can avoid lens flare with a lenshood or filters, however, the effect is also useful for bringing artistic elements into an image, such as sun rays peaking out from behind a rock formation. . A WMC coating aids in keeping the filter free of dirt, water and oil. It also protects the filter against minor scratches. The rugged aluminium ring features a slim design which considerably reduces the chances of getting vignetting.
Provides 1-7 Stops (0.3 - 2.1) of light control
HD (high definition) technology for enhanced retention of sharpness
DND optical glass reduces chromatic aberration
AR multi-coating reduces flare and ghosting
WMC coating to repel water and oil as well as giving a scratch resistant surface
Rugged black aluminium alloy filter ring
Slim design reduces chances of vignetting.
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