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danieleggert | 2 years ago

The “raw” data in so-called “raw” image formats in not unprocessed data from the image sensor. The camera will already have done processing on the data, it’s just not fully processed.

If it was indeed raw data off the sensor, you’d see all kinds of “bad” things such as dead pixels. And camera vendors (obviously?) don’t want you to see that.

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CharlesW|2 years ago

> The “raw” data in so-called “raw” image formats in not unprocessed data from the image sensor.

RAW images are completely un-demosaiced and otherwise unprocessed sensor data, dead or stuck pixels and all. It's the job of the RAW converter (whether performed in-camera or post-capture) to hide those in the conversion to a standard color space.

Manufacturers are now blurring the meaning of RAW to be closer to what you imagine. For example, Apple's ProRAW images are demosaiced and heavily processed.