Samsung HMX-F90BP User Manual

Also see for HMX-F90: User manual Manual Del Usuario

Contents

105Maintenance & additional informationGLOSSARYAF (Auto Focus)A system that automatically focuses the camcorder lens on the subject. Yourcamcorder uses contrast to focus automatically.ApertureThe aperture controls the amount of light that reaches the camcorder’s sensor.Camcorder shake (Blur)If the camcorder is moved while the shutter is open, the entire image may appearblurred. This occurs more often when the shutter speed is slow. Prevent camcordershake by raising the sensitivity or using a faster shutter speed. Alternately, use atripod or the DIS or OIS function to stabilise the camcorder.CompositionComposition in photography means arranging objects in a photo. Usually, abiding bythe rule of thirds leads to a good composition.Complementary Metal-Oxide-Semiconductor (CMOS)A CMOS is an image sensor that produces images approaching the quality of CCD(charge coupled device) sensors. It consumes less power, meaning the battery onyour camcorder lasts longer before it needs recharging.Digital zoomA feature that artificially increases the amount of zoom available with the zoom lens(Optical zoom). When using the Digital zoom, the image quality will deteriorate as themagnification increases.Effective Pixel CountUnlike the total pixel count, this is the actual number of pixels used to capture animage.EV (Exposure Value)All the combinations of the camcorder’s shutter speed and lens aperture that resultin the same exposure.ExposureThe amount of light allowed to reach the camcorder’s sensor. Exposure is controlledby a combination of the shutter speed, the aperture value, and ISO sensitivity.Focal length (f)The distance from the middle of the lens to its focal point (in millimeters). Longer focallengths result in narrower angles of view and the subject is magnified. Shorter focallengths result in wider angles of view.F. No (F-Number)The F-number defines the ratio of the focal length to the size of the lens aperture(focal length/diameter of lens aperture). The smaller the F-number, the larger the lensaperture and the greater the amount of light that reaches the camcorder’s sensor.Generally, smaller F-numbers provide brighter images.MPEG-4 AVC/H.264MPEG-4 AVC/H.264 defines the latest video coding format standardised by theISOIEC and the ITU-T, in 2003. Compared with the conventional MPEG-2 format,MPEG-4 AVC/H.264 has more than twice the efficiency. Your camcorder employsMPEG-4 AVC/H.264 to encode high definition videos.Optical zoomThis is a general zoom which can enlarge images with the lens alone and does notdegrade the quality of images.QualityAn expression of the rate of compression used in a digital image. Higher qualityimages have a lower rate of compression, which usually results in a larger file size.ResolutionThe number of pixels present in a digital image. High resolution images contain morepixels and typically show more detail than low resolution images.Shutter speedShutter speed refers to the amount of time it takes to open and close the shutter,and it is an important factor in the brightness of a photo, as it controls the amountof light which pass through the aperture before it reaches the image sensor. A fastshutter speed provides less time for light to enter. The photo becomes darker, butmore easily freezes subjects in motion.White balance (colour balance)An adjustment of the intensities of colours (typically the primary colours red, green,and blue) in an image. The goal of adjusting the white balance, or colour balance, isto correctly render the colours in an image.