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LoCa core correction in LR 4.1RC2
#1
Just downloaded the second release of Lightroom 4.1



It has LoCa correction! It's not fully automatic, but looks pretty good....maybe the days of expensive true APO lenses are numbered? This is a much cheaper solution which cleans up the bokeh of much cheaper but otherwise outstanding fast lenses!
#2
[quote name='DavidBM' timestamp='1335493058' post='17802']

Just downloaded the second release of Lightroom 4.1



It has LoCa correction! It's not fully automatic, but looks pretty good....maybe the days of expensive true APO lenses are numbered? This is a much cheaper solution which cleans up the bokeh of much cheaper but otherwise outstanding fast lenses!

[/quote]



Are we talking about lateral CA, bokeh fringing (formerly discribed as LoCA) or purple fringing here ?

So far we only saw solutions for lateral CAs and purple fringing (with limited effect).
#3
[quote name='Klaus' timestamp='1335512559' post='17810']

Are we talking about lateral CA, bokeh fringing (formerly discribed as LoCA) or purple fringing here ?

So far we only saw solutions for lateral CAs and purple fringing (with limited effect).

[/quote]





see http://blogs.adobe.com/lightroomjournal/...trols.html for details
#4
Capture NX 2 has had LoCA correction for a while, which according to user reports works quite well, at least for some subjects, but fails on others.



It will be interesting to see how the Adobe approach works out in reality.



-- Markus
Editor
opticallimits.com

#5
[quote name='walter_g' timestamp='1335513578' post='17812']

see http://blogs.adobe.com/lightroomjournal/...trols.html for details

[/quote]



Wow, I just checked those samples and they look very promising. Especially the last one, where green fringing around the car's mirror is removed... in front of a green background.



Spread the word, please. I can't wait for the used prices of the SL 125 to collapse <img src='http://forum.photozone.de/public/style_emoticons/<#EMO_DIR#>/smile.gif' class='bbc_emoticon' alt='Smile' />



-- Markus
Editor
opticallimits.com

#6
Looks promising indeed, although since I don't use LR or CS6 nor have any plans on such, it might be a while before they filter that feature down to PSE...



I'd also be a little cautious, in case there's any side effects like correction where it shouldn't be. I know they have a selective region control, but still it's more work to do.
<a class="bbc_url" href="http://snowporing.deviantart.com/">dA</a> Canon 7D2, 7D, 5D2, 600D, 450D, 300D IR modified, 1D, EF-S 10-18, 15-85, EF 35/2, 85/1.8, 135/2, 70-300L, 100-400L, MP-E65, Zeiss 2/50, Sigma 150 macro, 120-300/2.8, Samyang 8mm fisheye, Olympus E-P1, Panasonic 20/1.7, Sony HX9V, Fuji X100.
#7
similar thinks I did manualy in Photoshop - mostly for my closeup and macro work.

Since I switched from tokina 100Macro to sigma 150 non OS I don't need such postprocessing anymore.

Now Adobe is trying to automate something that me and many other photographer did manualy.
#8
[quote name='Klaus' timestamp='1335512559' post='17810']

Are we talking about lateral CA, bokeh fringing (formerly discribed as LoCA) or purple fringing here ?

So far we only saw solutions for lateral CAs and purple fringing (with limited effect).

[/quote]



We are talking axial or longitudinal chromatic aberrations (i.e. bokeh fringing - green behind the plane of focus and magenta in front of it}



I've tried it out on a few pictures and it seems to work nicely. You use an eyedropper and pick some paradigm green fringing and then some magenta. The algorithm is impressive: it seems to get rid of the LoCas without even affecting other areas of the same colour.



There's a separate new tool for lateral CA which is no longer profile based, and seems much more reliable than the previous one while being fully automatic.
#9
[quote name='DavidBM' timestamp='1335533317' post='17834']

We are talking axial or longitudinal chromatic aberrations (i.e. bokeh fringing - green behind the plane of focus and magenta in front of it}



I've tried it out on a few pictures and it seems to work nicely. You use an eyedropper and pick some paradigm green fringing and then some magenta. The algorithm is impressive: it seems to get rid of the LoCas without even affecting other areas of the same colour.



There's a separate new tool for lateral CA which is no longer profile based, and seems much more reliable than the previous one while being fully automatic.

[/quote]



Interesting - that's a real step forward. I'm surprised that Adobe is so much into this. Bokeh fringing is only rarely mentioned in reviews out there.



I was always wondering what kept them so long to implement the CA removal. Several years ago they acquired RawShooter which already had this technology in place.







#10
Nice catch.



I think DxO is also pretty hot on this and had this out before Adobe too. But it's cool to see Lightroom keeping on developping its core engine.



Very nice as it's one of the most ugly looking flaw to me.
  


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