1. Which file formats discussed have you used in the past?
JPEG and RAW
2. What is the difference between a Raster and a Vector file?
Raster is lossy and Vector is lossless
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?
JPEGs are lossy while PSD, DNG, TIFF and NEF are lossless
2. What are common uses for each? By this I mean where would I publish each of them for the highest quality.
TIFF is used in printing, JPEG are used for mostly everything, DNG and NEF is used for post processing, PSD are used for saving photoshop files.
3. Can you create this type of file in your camera?What are three advantages of a RAW file:
RAW files are:
lossless
higher in dynamic range
uncompressed
What is one disadvantage of a RAW file:
RAW files are:
not readily printable
What are three advantages of a JPEG file:
JPEG files are:
readily printable
sharper
a standard format readable by any image program
What is one disadvantage of a JPEG file:
JPEG files are:
able to be processed but lose data after every edit
1. Under the first heading "Capturing the Images," how much of the data does a RAW file retain after it is captured by the camera?
All the original data without any compression
2. Under the second heading "Processing the Files," what are some of the things that a RAW file enables a photographer to edit after the image is taken?
White balance, contrast, highlights, color, shadows, and saturation.
3. Under the third heading "Practicalities," what are some of the factors that photographers must consider when deciding to shoot in RAW?
The size of the files, not all cameras can shoot RAW, JPEGs cannot be converted to RAW but RAWs can be converted to JPEGs
4. Under the fourth heading "Which one is for you?" why would an aspiring professional photographer need to know how to work with RAW files?
They would need to know which file is best for post processing as well as which file is best if storage is a problem.
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