Thursday, September 18, 2014

File Format

1. Which file formats discussed have you used in the past?
JPEG, BMP, PNG, PSD
2. What is the difference between a Raster and a Vector file?
Raster: the data describes the characteristic of each individual pixel

Vector: a geometric description which can be rendered smoothly at any desired display size. 

The most common file formats we will use in class are .jpeg, .tiff, .psd, and either .dng (Canon) or .nef (Nikon)

Look up each and answer the following questions for each:

1. Is this format lossy or lossless?

JPEG- lossy
TIFF- lossy and lossless
PSD- lossy
DNG- lossless

2. What are common uses for each? By this I mean where would I publish each of them for the highest quality.

JPEG- mostly for web
TIFF- printing business
PSD- used in special effects
DNG- billboards and blown up pictures 

3. Can you create this type of file in your camera?

JPEG- yes
TIFF- some cameras support this file
PSD-no
DNG- depends, most DSLR can but other like point and shoots cannot 

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