Go Back   Steve's Digicams Forums >

LinkBack Thread Tools Search this Thread
Old Sep 23, 2010, 8:13 AM   #1
Senior Member
MartinSykes's Avatar
Join Date: Feb 2010
Location: Cheshire, UK
Posts: 854
Default Negative contrast, sharpness, NR etc.

I have an FZ35 but guess this question applies to all cameras,

Does a NR adjustment of zero mean no adjustment? If so, does -1 mean it's adding noise?

Similarly, does a sharpness adjustment of 0 mean no adjustment? If so, does -1 means it is blurring the image?

Probably a noob question but just made me wonder what the numbers really mean.
AutoHDR - Free HDR software for Windows at http://www.autohdr.co.uk on Facebook at http://www.facebook.com/home.php?sk=...36045126467361
My Flickr stream: http://www.flickr.com/photos/martinsykes
Panasonic DMC-FZ38, Sony ­α580
MartinSykes is offline   Reply With Quote
Sponsored Links
Old Sep 23, 2010, 10:24 AM   #2
Senior Member
ac.smith's Avatar
Join Date: Dec 2006
Location: Davenport, IA
Posts: 2,093

"0" implies no or minimal NR or sharpening, "1" is the next level up in noise reduction or sharpening. Default settings are typically at a middle numeric value of the range available. I haven't seen NR and sharpening use negative values on NR and sharpening, just contrast and saturation but the setting of the scales varies by manufacturer and model. No standard. I'd think that negative values exist on some cameras for NR and sharpening then it means that "0" is not no NR/sharpening.

A. C.

Last edited by ac.smith; Sep 23, 2010 at 10:31 AM.
ac.smith is offline   Reply With Quote
Old Sep 23, 2010, 11:20 AM   #3
Senior Member
VTphotog's Avatar
Join Date: Mar 2005
Location: Extreme Northeastern Vermont, USA
Posts: 4,309

Manufacturers' settings of '0' are generally a compromise, and shouldn't imply that NO sharpening, NR, etc. is being done. It is a level which looks 'normal' to whoever were the testing the camera designs. Using negative values just means you are selecting less of the option. In many, or most cases, if the intent is to post-process a jpeg, selecting negative values can give you better results after the PP.

VTphotog is offline   Reply With Quote

Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On

All times are GMT -5. The time now is 8:23 PM.