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Dean Wilson's picture

September Pondering

I have always heard, and it is a 'stated fact' almost everywhere, that RAW files are uncompressed, unprocessed files. It can make it very difficult to convince someone that a RAW file is indeed a processed file.

If this were true then Canon and Nikon would produce the same color characteristics. The sensors in each camera brand interpret/record color differently.

Given this fact, I believe the algorithms controlling the sensors are indeed processing before rendering the final RAW file.

So...what is your interpretation of an unprocessed file?

Photo for attention only.

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9 Comments

I would say that RAW files are rather 'minimally processed. There has to be SOME processing involved to move the digital data from the sensor cells to an output file.
However, unlike jpg I don't believe cameras work to enhance or compress RAW captures.

I suspect the difference in manufacturer color characteristics is down to the characteristics of the sensor itself and any pre-processing that is done in the camera to try and correct perceived deficiencies.

I have a background in electronics so the underlying design of systems such as cameras make sense to me at a basic level.

Sort of, kind of, but not really on the same subject. Here's a video on how jpeg's work. The science and technology behind it is nothing short of amazing, especially since it takes place so instantly!
https://www.youtube.com/watch?v=Kv1Hiv3ox8I&list=WL&index=43&t=114s

Great video. I am glad they also included the shortcomings and noted there are better compression softwares available.

I have a habit of separating my captured images into different subfolders by type, JPEG and CR3.

I grew up in the world of 8x3 file naming structure with DOS and yet, as an avid reader, I cannot refer to JPEG as JPG. I guess my English degree was more powerful than either my Network Admin or Cyber Security degrees.

I do that too, keep the same photo in two different files, RAW vs, jpeg.

Btw, nice photo though I'd prefer if there was a little more border on the bottom.

I should have used my feet and unzoomed, but I was just playing around.

Yeah, I've recently learned to always frame photos a little larger whenever I shoot.

You can always crop in, but you cannot crop out.

With the advancement of generative fill/expand in Photoshop this is no longer strictly true.

I have saved a few images so far using this tool, mostly where horizons were not level and rotating lost valuable pixels.

Good question and great information. Thank you for clarification.