Looking for high ISO A77 RAW

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FineArt Members Profile Send Private Message Find Members Posts Add to Buddy List Senior Member Joined: 28 July 2007 Country: Canada Location: Alberta Status: Offline Posts: 1692	Post Options Post Reply Quote FineArt Report Post Quote Reply Posted: 19 January 2013 at 16:37
	This was the JPG output of ISO3200 http://fs05n5.sendspace.com/dl/b6ee75e0ce6682a4ecb9a9d059e5e1ce/50facb6d1781b996/w1tq12/CVT_D800hSLI03200NR0%20curves.jpg



FineArt Members Profile Send Private Message Find Members Posts Add to Buddy List Senior Member Joined: 28 July 2007 Country: Canada Location: Alberta Status: Offline Posts: 1692	Post Options Post Reply Quote FineArt Report Post Quote Reply Posted: 19 January 2013 at 19:27
	I just downloaded Sony A99 RAW ISO6400 from imaging resource. I did a RGBL split, NR, sharpen, re-combine. Here are 3 100% crops. Compare them to the same file jpg at Imaging resource. Its a big difference. http://farm9.staticflickr.com/8357/8395063175_197342b41d_o.jpg http://farm9.staticflickr.com/8495/8395063227_6dba0be2d9_o.jpg http://farm9.staticflickr.com/8090/8395063303_06438f6c3e_o.jpg 50% crop http://farm9.staticflickr.com/8043/8395095985_82f570f8f8_o.jpg ISO6400! I'll call this Arthur's method. Attached is a screenshot of the red channel before and after NR. Each channel has it's own noise. http://farm9.staticflickr.com/8332/8397000750_8eda888755_o.jpg Edited by FineArt - 20 January 2013 at 01:05

FineArt Members Profile Send Private Message Find Members Posts Add to Buddy List Senior Member Joined: 28 July 2007 Country: Canada Location: Alberta Status: Offline Posts: 1692	Post Options Post Reply Quote FineArt Report Post Quote Reply Posted: 22 January 2013 at 01:49
	I just got a reply over at LuLa that Bruce Fraser published by channel noise reduction and sharpening many years back. http://www.luminous-landscape.com/forum/index.php?topic=74352.0 So it's been done and it works.

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