Gary Davies
Posts: 84
Location: Portsmouth, Hampshire, United Kingdom
Registered: 1 May 2009
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CA correction Adobe ACR 6.7
Posted: 19 Nov 2012 at 16:26 GMT
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Am I alone in thinking ACR 6.6 did a better job of CA correction than ACR 6.7 does or am I missing something? I personally preferred the manual control of 6.6 as I'm still getting fringing in the auto setting from 6.7.
Gary
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Smooth
Posts: 4013
Location: Mount Panorama, Australia
Registered: 21 Jul 2004
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Re: CA correction Adobe ACR 6.7
Posted: 19 Nov 2012 at 16:44 GMT
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Others have complained about this.
Make sure you are doing these two things in the lens correction settings in ACR.
1. On the Profile (tab) check the "Remove Chromatic Aberration" checkbox to enable.
2. On the Manual (tab) enable the Defringe: "All Edges"
Regards, Smooth 
www.omnipix.com.au
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DennisS
Posts: 1622
Location: Los Anglels, United States
Registered: 1 Sep 2007
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Re: CA correction Adobe ACR 6.7
Posted: 19 Nov 2012 at 17:24 GMT
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Gary,
You are not alone. Even though the automatic CA removal does an ok job, you still need to defringe.
Even if you do both, 6.7 does not do a complete job of removing all of the CA. In 6.6 you could adjust out the very last bit of CA manually. Just like Microsoft thinks they know best how users should use their computers (Windows 8, for example), Adobe thinks they know best how photographers should process pictures.
I really miss the sliders and the fine tuning you could do. Auto CA removal works fine for standard body/lens combinations. It is when you start mixing/matching like we do that things start to get interesting.
Dennis
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Smooth
Posts: 4013
Location: Mount Panorama, Australia
Registered: 21 Jul 2004
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Re: CA correction Adobe ACR 6.7
Posted: 19 Nov 2012 at 18:00 GMT
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If you want ultimate control for removing Chromatic Aberration the three zone system that is offered by Photo Ninja is hard to beat. This three zone system with individual sliders is available for both Chromatic Aberration and Vignetting and whilst it is only a new RAW converter this software shows all the right signs for professional photographers who really want to take control.
Batching is still to come. But we are told this is extremely high on the list for the next release.
From the makers of Noise Ninja.
Check Photo Ninja out. www.picturecode.com
Regards, Smooth
www.omnipix.com.au
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Smooth
Posts: 4013
Location: Mount Panorama, Australia
Registered: 21 Jul 2004
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hindenhaag
Posts: 844
Location: Netherlands
Registered: 7 Mar 2010
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Gary Davies
Posts: 84
Location: Portsmouth, Hampshire, United Kingdom
Registered: 1 May 2009
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Re: CA correction Adobe ACR 6.7
Posted: 19 Nov 2012 at 19:05 GMT
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I'm relieved to hear it's not just me then. I've recently moved over to Lightroom 4, mainly for the cataloging feature but find the RAW conversion, although powerful, is a bit cumbersome compared to the quick and simple ACR workflow.
Does anyone else use LR4 to prepare their images for stitching in PTGUi?
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Smooth
Posts: 4013
Location: Mount Panorama, Australia
Registered: 21 Jul 2004
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Re: CA correction Adobe ACR 6.7
Posted: 20 Nov 2012 at 4:29 GMT
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I purchased a Lightroom 3.x license and found the cataloging feature it's downfall (in my workflow anyway) and an unavoidable pain in the rear. But that said, the RAW conversion via Photoshop and Lightroom is the same as they use the same ACR (so long as the versions match). So really you shouldn't see any difference (other than GUI graphics). I feel the cumbersome part is the cataloging.
Whatever the case, you must use a RAW converter to get your images to 16 bit .tif for PTGui stitching. The thing is you need to make a choice on what RAW converter to use.
ACR via Photoshop/Bridge or Lightroom.
DxO Optics.
Photo Ninja.
Capture One.
Silkypix.
Digital Photo Professional (Canon).
Capture NX (Nikon).
Among others...
Regards, Smooth
www.omnipix.com.au
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Gary Davies
Posts: 84
Location: Portsmouth, Hampshire, United Kingdom
Registered: 1 May 2009
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Re: CA correction Adobe ACR 6.7
Posted: 20 Nov 2012 at 11:29 GMT
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Thanks Smooth,
I've just tried revisiting Capture NX, which I used a while back, but it doesn't work with newer cameras so in a bid to reduce my software learning curve it looks like I'll have to plod on with Adobe ACR.
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burake
Posts: 283
Location: Antalya, Turkey
Registered: 7 Jun 2012
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Re: CA correction Adobe ACR 6.7
Posted: 20 Nov 2012 at 15:48 GMT
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Smooth said:
Whatever the case, you must use a RAW converter to get your images to 16 bit .tif for PTGui stitching.
Is there a big diffrence between 16 bit. tif and 8 bit. tif? I am using 8 bit. tif because 16 bit is more time and disk space consuming...
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Smooth
Posts: 4013
Location: Mount Panorama, Australia
Registered: 21 Jul 2004
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Re: CA correction Adobe ACR 6.7
Posted: 20 Nov 2012 at 15:57 GMT
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burake said: Smooth said:
Whatever the case, you must use a RAW converter to get your images to 16 bit .tif for PTGui stitching.
Is there a big diffrence between 16 bit. tif and 8 bit. tif? I am using 8 bit. tif because 16 bit is more time and disk space consuming...
By limiting to 8 Bit you are risking colour banding with compression. Something extremely noticable in blue sky scenes. Whilst your output to panorama publishing will be reduced to 8 Bit .jpg is should always be the last part of the conversion.
Here is a read up on 8 Bit vs 16 Bit.
www.photoshopessentials.com/essentials/16-bit
16 Bit is where you want to be when editing.
Regards, Smooth
www.omnipix.com.au
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burake
Posts: 283
Location: Antalya, Turkey
Registered: 7 Jun 2012
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Re: CA correction Adobe ACR 6.7
Posted: 21 Nov 2012 at 1:04 GMT
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Smooth, thank you very much...
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Tim Eastman
Posts: 190
Location:
Registered: 15 Nov 2006
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Re: CA correction Adobe ACR 6.7
Posted: 23 Nov 2012 at 19:35 GMT
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I did not pay much attention to this post, but yesterday I wanted to show my father about RAW workflow on his CS6 and CA correction seemed to be reduced to a yes or no. My CS5 still has sliders for CA. Maybe a good reason to stick with CS5, especially as I just upgraded from CS2 recently!
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Hans Nyberg
Posts: 2871
Location: Denmark
Registered: 28 Aug 2005
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Re: CA correction Adobe ACR 6.7
Posted: 23 Nov 2012 at 19:50 GMT
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Tim Eastman said: I did not pay much attention to this post, but yesterday I wanted to show my father about RAW workflow on his CS6 and CA correction seemed to be reduced to a yes or no. My CS5 still has sliders for CA. Maybe a good reason to stick with CS5, especially as I just upgraded from CS2 recently!
Upgrade to CS6. Its well worth the upgrade just because the superior Raw Converter which uses a new 2012 conversion that with the sliders can give you much more from the highlights and using the white slider you can compensate for what will cause banding in the highlights from 3x2EV bracketing shots. . Ca is perfect just with the automatic option that works for any lens also without EXIF. For the fringing it has sliders which are better than any other converter.
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