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3 votes

Which non-raw formats have the same capabilities as raw?

Doing some digging on the Interwebs, it all comes down to purpose and what each one is. A RAW file is a record of sensor data, all of it. A TIFF file is a processed image that no longer contains all ...
David Bunnell's user avatar
3 votes
Accepted

Converting .CR2 raws to non-raw image format with ImageMagick mogrify makes images warm

You're never seeing "THE raw image" on your screen. What you're seeing is a conversion of the raw data into a demosaiced color image with white point, black point, white balance, contrast ...
Michael C's user avatar
  • 175k
2 votes

Megapixels vs Compression Artefacts

More and Less. More artifacts because there's more pixels to have compression artifacts. If 1% of an image is artifacts, 1% of a bigger image is more than 1% of a smaller image in terms of number of ...
dandavis's user avatar
  • 412
2 votes
Accepted

Backup compression that takes into account similarities between images?

A few suggestions: Max out the dictionary size option on the compression tool you use. This allows more internal re-use of common sequences found in the data. It can waste space on a few small text ...
dandavis's user avatar
  • 412
2 votes

What is a .webp file?

WebP is a raster graphics file format developed by Google intended as a replacement for JPEG, PNG, and GIF file formats. It supports both lossy and lossless compression,[8] as well as animation and ...
Romeo Ninov's user avatar
  • 12.1k
2 votes

How to calculate actual bit-levels in a high dynamic range image?

I never heard of this algorithm but judging by information I found it's a tone mapping algorithm. Tone mapping does not change the bit depth of output. Tone mapping is essentially modifying too bright ...
Euri Pinhollow's user avatar
1 vote

How do I identify and create lossless HEIC image files?

The file type .heic is merely a container; it is neither lossy nor lossless. What makes it "lossy" is the compression that is applied during the saving of the file. The original .heic may ...
Steven Kersting's user avatar
1 vote

Which non-raw formats have the same capabilities as raw?

But isn't the advantage of raw over jpeg simply the fact that a raw image has a higher bit depth and is not lossy compressed? No. Bits don't always represent the same thing. In raw image files bits ...
Michael C's user avatar
  • 175k
1 vote

Which non-raw formats have the same capabilities as raw?

Other than having deeper colour and no loss compression main reason why raw files are superior is that bigger computer with no power restriction and no patent and license restrictions allows better ...
Euri Pinhollow's user avatar
1 vote

Which non-raw formats have the same capabilities as raw?

"Other than demosaicing..." That seems to be a massive understatement... demosaicing is a huge factor. First, a file format is just a container... in itself it doesn't mean anything. E.g. ...
Steven Kersting's user avatar
1 vote

Megapixels vs Compression Artefacts

TL;DR: No, megapixels and compression artifacts are unrelated. Compression atrifacts come from the lossy compression algorithm that reduces the original RGB image to a smaller (e.g. JPEG) format. And ...
Ralf Kleberhoff's user avatar
1 vote

Megapixels vs Compression Artefacts

If you are speaking about lossy image output it totally depends on image settings. All consumer cameras can produce images with no visible artefacts at highest quality level. If you asked specifically ...
Euri Pinhollow's user avatar
1 vote

What quality to choose when converting to JPG?

It's often more efficient to reduce the size of the image than the quality, especially if you only want to use for internet sharing. Also you might have various strategies depending on the status of ...
Hugues's user avatar
  • 401

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