Spring 2012

Spring 2012
by ani

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Image compression comprise methods with the goal to reduce the size of an image by either removing redundant or less important information (or a combination of the two).

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27
votes
5answers
3k views

Why don't cameras support JPEG 2000 format?

The original JPEG format was updated in 2000 to provide a variety of features including less artifacts, better compression and lossless compression. Why haven't cameras updated to use this new format?...
50
votes
7answers
12k views

Why don't most cameras support PNG format?

I prefer PNG format to JPG, because JPG uses lossy compression. When I capture a screen in my PC or scan a picture or document in my scanner, I always save them as PNG format. If a camera could ...
7
votes
8answers
106k views

How to reduce the file size of my photos (to under 15 MB)?

I don't have a "Pro" account on Flickr, just the free one, so my photo uploads are capped to 15 megabytes/file. After post-processing, my photos end up being too large to be uploaded to Flickr. I do ...
17
votes
3answers
5k views

Why does JPEG quality go up to twelve?

Wwhy does the JPEG quality option in Adobe products go up to twelve? Here's the option in the Save dialog of PS: Thats a whole new definition of it goes up to eleven.
13
votes
2answers
14k views

Which TIFF image compression is better, LZW or ZIP?

Which image compression is better, LZW or ZIP? I am using Lightroom to export images.
6
votes
2answers
1k views

What kind of artifacts will Nikon's lossy NEF compression algorithm cause?

The D7000 has two options for NEF compression: "Compressed" and "Lossless compressed" -- the manual says NEF images are compressed using a non-reversible algorithm, reducing file size by about 40-...
12
votes
4answers
7k views

How to avoid jpeg compression artefacts when saving photos in web resolution?

When I save a web-resolution image (for example, 1920×1024px), flat areas tints often have damaged shades of color. I'm saving in Photoshop CS4 with quality 2 in standard mode, because I need the ...