Tuesday, September 16, 2014

Lossy versus Lossless

What are three advantages of a RAW file: give you much more control over how your image looks,
uncompressed, the complete lossless data from the camera's sensor.

What is one disadvantage of a RAW file: lower in contrast, not as sharp

What are three advantages of a JPEG file: higher in contrast, small in file size, immediately suitable for printing, sharing or posting on the web

What is one disadvantage of a JPEG file: unable to be manipulated without losing data each time an edit is made


1. Under the first heading "Capturing the Images," how much of the data does a RAW file format retain after it is captured by the camera? captures all the data and retains all the information without compressing it, preserving all the information in all the pixels within the image.

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? you have control over the compression of the final image, you are using software to edit the pixels as opposed to letting the camera do it automatically. have control over white balance, contrast, highlights, shadows, colors and saturation

3. Under the third heading "Practicalities," what are some of the factors that photographers must consider when deciding to shoot in RAW? not every digital camera has the option to shoot in RAW fotmat. RAW files are significantly larger the JPEG files, you can't convert from JPEG to RAW

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? if you want to be competing with the best, you need to invest time in learning editing skills and developing the techniques that will enhance your photos.

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