mr_marks Posted February 20, 2012 Share Posted February 20, 2012 <p>Hi, I often see some kind of artifact in the shadow region of RAW images when viewed ACR. When I view the same file in DPP, this artifact does not show up. I would like to understand why this artifact is showing up and if there's a way to eliminate it in ACR? In the example below, the artifact can be seen in the left side of the neck. The first image is from ACR, while the second from DPP. Thanks for the inputs!<br /><br />http://www.flickr.com/photos/marksmike/6907696385/<br /><br />http://www.flickr.com/photos/marksmike/6907695799/</p> Link to comment Share on other sites More sharing options...
patricklavoie Posted February 20, 2012 Share Posted February 20, 2012 <p>probably because DPP certainly apply a auto sharpen / noise removal setting to your image upon import.. and ACR dont until you ask for it.</p> Link to comment Share on other sites More sharing options...
mr_marks Posted February 20, 2012 Author Share Posted February 20, 2012 <p>What I observe is that after editing in ACR and perhaps later in PS, then converting the file to jpeg, the artifact can be seen if the jpeg file is opened again in ACR or PS, but if I open the edited file in Microsoft Picture Manager, the artifact is completely gone. So, it could be some setting in ACR or PS that's affecting the displayed image, but I don't have any idea what could be causing it.</p> Link to comment Share on other sites More sharing options...
Tim_Lookingbill Posted February 20, 2012 Share Posted February 20, 2012 <blockquote> <p>What I observe is that after editing in ACR and perhaps later in PS, then converting the file to jpeg, the artifact can be seen if the jpeg file is opened again in ACR or PS, but if I open the edited file in Microsoft Picture Manager, the artifact is completely gone.</p> </blockquote> <p>You're complicating the issue with that workflow.</p> <p>Do the posterized shadow transition artifacts around the jaw line of the woman I see in your flickr preview at original size show up viewing that same area in the image viewed at 100% in ACR?</p> <p>Jpeg previews add another variable making it impossible to point to the source of the issue. Let's first eliminate whether this is generated by the ACR preview or editing done to it in ACR or if it's a display preview issue. A camera profile in ACR could be contributing this viewed at 25-50% and not show up until viewed in a jpeg.</p> <p>This is rare for this to happen, so troubleshooting this requires more info.</p> Link to comment Share on other sites More sharing options...
mr_marks Posted February 20, 2012 Author Share Posted February 20, 2012 <p>The raw file can be downloaded here. The same artifact can be seen in other shadow areas as well in ACR <a href="http://www.4shared.com/file/9dBqN59i/_MG_7857.html?refurl=d1url" target="_blank">http://www.4shared.com/file/9dBqN59i...l?refurl=d1url</a></p> Link to comment Share on other sites More sharing options...
mr_marks Posted February 20, 2012 Author Share Posted February 20, 2012 <p>Do the posterized shadow transition artifacts around the jaw line of the woman I see in your flickr preview at original size show up viewing that same area in the image viewed at 100% in ACR?<br> Hi Tim, yes, the same artifact shows up in the same area while viewing the raw file at 100% in ACR. I have provided a link for the raw file above. Thanks.</p> Link to comment Share on other sites More sharing options...
Tim_Lookingbill Posted February 20, 2012 Share Posted February 20, 2012 <p>Just downloaded your file and took a screenshot of the same area and I don't see any artifacts using ACR 6.6 Default settings. Since it appears you applied edits to the image there's no way to compare apples to apples. See below how it shows up on my system with no edits.</p><div></div> Link to comment Share on other sites More sharing options...
mr_marks Posted February 20, 2012 Author Share Posted February 20, 2012 <p>Hi Tim, thank you very much for your test. I double checked my ACR version and it is 6.0, not 6.6. Could it be due to some improvements in 6.6?</p> Link to comment Share on other sites More sharing options...
Tim_Lookingbill Posted February 21, 2012 Share Posted February 21, 2012 <p>Did you switch to ACR 6 Default settings for your version of the image because yours clearly looks edited.</p> <p>Other than that I have nothing else to offer to solve this.</p> Link to comment Share on other sites More sharing options...
mr_marks Posted February 21, 2012 Author Share Posted February 21, 2012 <p>Yes, the artifact appears in default setting and all camera profiles. Thanks for your great inputs.</p> Link to comment Share on other sites More sharing options...
mr_marks Posted May 2, 2012 Author Share Posted May 2, 2012 <p>I am seeing the same artifact even in ACR 6.7 <br /> <br /> Really lost on this one, so any enlightenment will be appreciated!</p> Link to comment Share on other sites More sharing options...
Recommended Posts
Create an account or sign in to comment
You need to be a member in order to leave a comment
Create an account
Sign up for a new account in our community. It's easy!
Register a new accountSign in
Already have an account? Sign in here.
Sign In Now