Friday, 8 October 2010

IDAT 107

Today in IDAT 107 we were talking about colours and how colours mean different information like Green means calm and collect thats why Green peace use a Green colour because it means peace.
The colour Red for example means fire but it also means the colour of love. Red has been proven to stimulate a faster heartbeat and breathing, it is an emotionally intense color.
Before i went ahead and played with illustrator it is important to know about file types and what is the best file for certain images so i have researched into a few.

JPEG:
JPEG stands for Joint Photographic Experts Group.
JPEG has 2 different file types one is called JPEG/exif and this is the most common image format it is used on most digital camera's and other photographic image capturing devices.
The second JPEG file is JPEG/jfif and this is the most common format for storing and transmitting photographic images on the world wide web.

JPEG is a very popular file format and is used for people who don't know file formats very well i would use JPEG if i wanted a quick picture of something. Jpegs have a high compression rate it is 10:1 so you lose alot of digital quality when you take a picture on your camera.

GIF:
GIF stands for graphics interchange format.
The GIF format is a bitmap image format that was made in 1987 by compuserve.
It was mostly used on the web due to its wide support and portability. The file format supports 8-bits per pixel. This allows upto 256 distinct colours, the colours are chosen from 24-bit RGB colours.
This format allows animation aswell but only simple animations.
Because of the limitations in colour it is unsuitable for reproducing colour photographs,But it is perfect for simpler images such as graphics or logo's with solid areas of colour.
GIF images are compressed using the lossless data compression technique which reduces the file size without degrading the visual quality.

PNG:
PNG stands for portable network graphics.
The PNG is a bitmap image format that employs lossless data compression.
PNG was created through a patient being on GIF so PNG was made and it was created to improve upon the GIF format. PNG supports palettes of 24-bit RGB or 32-bit RGBA colours. PNG was designed for transferrng images on the internet, and they were not built for print graphics.

TIFF:
TIFF stands for Tagged Image File Format.
This is a file for storring images, it is a very popular image format among the Apple Macintosh owners.
Graphic artists and the publishing industry use this file alot this is because it doesnt compress.
Since 2009 it is under the control of Adobe Systems, originally it was created by Aldus.
TIFF has 24 and 48 bit RGB and also 8 or 16-bit grayscale the index colour is 1-8bit.
TIFF is a flexable adaptable file format for handling images and data with a single file.

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