I have check the manuel on the compression slider in the out put section in render, but it does not explain which way to slide for better output. The default is 90, why 90. To me compression is compression, when you compress something that means that your compressing something to reduce the original image for lower resolution, so if the default is at 90 then the image is compress 90 percent, zero compression would mean that there is no compression thus better resolution?
You say it’s the compression slider…do you mean the Quality slider? The default is 90% quality in most image software, so that’s just a standard default. It’s not 90% compression, it’s 90% quality. It’s less compressed, thereby preserving more of the original, the higher that number.
It is called compression, not Quality, if it said Quality, I would understand, and be asking, Blender should change the name to Quality then.
Compression and Quality are not necessarily related things. For lossy formats such as .jpg, the greater the compression the lower the quality. For lossless formats such as .png you have the same quality but smaller file size. Like when you zip a file, the size is smaller but you don’t start deleting files to make it so.
http://wiki.blender.org/index.php/Doc:2.6/Manual/Render/Output#Compression
True, Richard. It sounded like lonewolf was talking about lossy formats since he was asking about compression giving lower quality. Lonewolf, that slider changes from Compression to Quality depending on whether or not you are using a lossy format. For instance, with PNG it says Compression, and with JPEG it says Quality.
Ah so, I did not notice the change…Here is what I am using for upmost sharpness: Using Catmull Rom, anti-alias 16, Full Sample, size 100 percent, 1920X1080, square pixels, color depth 8. and of course png. Hope I am zeroing in on my concern. Let me know if I am wrong on what I use. I am open to any critique.