OpenRAW

About the importance of keeping RAW data.

Here is a BBC article called Reworked images reveal hot Venus

Some quotes:

Between 1975 and 1981 Soviet probes landed on Venus 10 times.
[...]
For years, scientists have paid little attention to the pictures. Indeed, the images were usually only available as low-quality photographs in books.
[...]
As part of a study of the Soviet exploration of Venus, Don Mitchell obtained the original digital data from the first probes that touched down, Veneras 9 and 10.
[...]
He used up-to-date digital processing techniques on the raw data from those spacecraft, as well as from subsequent Veneras.
[...]
"I took the raw data and carried out processes such as sharpening, recalibrating and compensating for blurring," he said.
[...]
The results are a dramatic improvement on the images previously released from Veneras 9 and 10.
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http://www.juergenspecht.com/