4.5，4.5 Pro and 4.1 comparison 2

EDB Zhou

• 24. Oktober 2008 20:56

4.5, 4.5 Pro and 4.1 also have different noise reduction.
4.5 sacrifices more details for low noise.
4.5 Pro keeps a balance between 4.5 and 4.1. I like 4.5 Pro better.
http://www.four-thirds.cn/forum/attachments/month_0810/20081024_43e2467508a2d2f8b64dwMEZtzwwN9Vr.png

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  Christopher

  • 24. Oktober 2008 21:10

  Is that 4.1 from a JPEG again? Sure looks like it. The DCT of the JPEG compression exacerbates any high frequency color variance (i.e. noise). Comparing noise between a TIFF and an image run through JPEG compression is useless.
  
  Though I do believe the noise reduction between 4.1 and 4.5 has been tuned somewhat.

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  EDB Zhou

  • 25. Oktober 2008 03:25

  [quote="Christopher" wrote:
  Is that 4.1 from a JPEG again? Sure looks like it. The DCT of the JPEG compression exacerbates any high frequency color variance (i.e. noise). Comparing noise between a TIFF and an image run through JPEG compression is useless.
  
  Though I do believe the noise reduction between 4.1 and 4.5 has been tuned somewhat.

  
  
  I tried jpeg output at 100% from 4.5 Pro, the noise pattern seen in the TIFF file still exists.
  Again, it's not a problem of JPEG compression.
  
  At 100% zoom, the 4.5 Pro jpeg output looks a lot cleaner.

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