Photography

JPEG & VECTOR

There are common file formats for images such as JPEG, BMP, PNG and Vector. I typically use JPEG and PNG for saving photos in my computer because I think they are the best formats. Some formats are good for using in websites. The reason why I use PNG to save my photos is because I want my background to be transparent on my website; I don’t want to have any background colours behind my picture. I am going to talk about JPEG and Vector.

JPEG

skye-stracke-model-1920x1080

JPEG known as “Join Photographic Experts Group. It is a standard of compressing photographic images. The file extension for this format is .JPEG or JPG is spite of the face that .JPG is the most widely recognised on all platforms. JPEG is the most part used for saving and transmitting photos on the World Wide Web, not suited for line drawings and other textual or iconic illustrations because that its compression technique perform badly on these sorts of pictures. JPEG is a decently created standard with plenty of software available, incorporating free software. JPEG is the best on photographs and compositions of a realistic scene with smooth variations of tone and colour. The JPEG panel has now created it’s wavelet-based standard, JPEG 2000, which is intended to eventually supersede the definitive JPEG standard.

JPEG images use a lossy compression algorithm. This algorithm exchanges quality for compression. A low-quality picture results in a smaller JPEG file; a high-quality picture produces a moderately large file. The amount of JPEG compression is regularly measured as a percentage of the quality level. A picture at 100% quality has (practically) no loss and 1% quality are quite low quality picture. In general, quality levels of 90% or higher are acknowledged “high quality’, 80%-90% is “medium quality” and 70%-80% is low quality. Anything underneath 70% is ordinarily a very low quality image.

VECTOR

Vector

Vector images mean the information saved of the picture is saved in a numerical configuration. A photograph (raster) picture is saved in bits. From left to right, from top to bottom. Every colour is saved as a dot. These dots meet up and create the image. A count of how many dots there are is known as the “resolution”. You might have known 72 Dpi, 300 Dpi means Dots per inch. A vector image is without resolution of the face that it just uses math.

A vector file is a file that is developed from shaped that are characterised by mathematical equations. As result, when you zoom into a vector image, the quality remains sharp, that vectors are developed using scientific mathematical equations is their strength. It keep the details in the picture as high as could reasonably be expected, and means that when you need to change how huge or how small you might like the picture to be printed, you can do without worrying about quality.

Sources:

ABOUT MONEY, 2014. JPG Files [online] [viewed 19 Nov 2014]. Available from: http://graphicdesign.about.com/od/Definitions/g/Jpg-Files.htm
ABOUT TECHNOLOGY, 2014. Which Graphics File Format Is Best To Use When? [online] [viewed 19 Nov 2014]. Available from: http://graphicssoft.about.com/od/graphicformats/f/summary.htm
BBC, 2014. What Are Vector Graphics? [online] [viewed 19 Nov 2014]. Available from: http://www.bbc.co.uk/schools/gcsebitesize/dida/graphics/bitmapvectorrev2.shtml
TECHTARGET, 2014. JPEG (Joint Photographic Experts Group) [online] [viewed 19 Nov 2014]. Available from: http://searchsoa.techtarget.com/definition/JPEG
TECTERMS, 2014. Vector Graphic [online] [viewed 19 Nov 2014]. Available from: http://www.techterms.com/definition/vectorgraphic
WEBOPEDIA, 2014a. JPEG – Joint Photographic Experts Group [online] [viewed 19 Nov 2014]. Available from: http://www.webopedia.com/TERM/J/JPEG.html
WEBOPEDIA, 2014b. Vector Graphics [online] [viewed 19 Nov 2014]. Available from: http://www.webopedia.com/TERM/V/vector_graphics.html
WIKIPEDIA, 2014. JPEG. Wikipedia [online] [viewed 19 Nov 2014]. Available from: http://en.wikipedia.org/wiki/JPEG
WIKIPEDIA, 2014. Vector graphics. Wikipedia [online] [viewed 19 Nov 2014]. Available from: http://en.wikipedia.org/wiki/Vector_graphics

Images:

http://www.mrwallpaper.com/wallpapers/skye-stracke-model-1920×1080.jpg (Review 19th November 2014 – JPEG)

http://www.vectors1.com/media/vector-graphics/vectornet-vector-graphics-09-deftbeat.jpg (Review 19th November 2014 – Vector graphics)

 

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