jaapv Posted February 14, 2010 Share #1 Posted February 14, 2010 Advertisement (gone after registration) DMR, VE 105-280 + 1.4x extender. It is abundantly clear that this image is for the bin. But given that it shows fringing ranging from red through purple to blue depending on focus, I tried to teach myself to remove it. No succes. How would you go about it? Or is it indeed hopeless? Welcome, dear visitor! As registered member you'd see an image here… Simply register for free here – We are always happy to welcome new members! Link to post Share on other sites Simply register for free here – We are always happy to welcome new members! ' data-webShareUrl='https://www.l-camera-forum.com/topic/112637-fringing-technical-problem/?do=findComment&comment=1225531'>More sharing options...
Advertisement Posted February 14, 2010 Posted February 14, 2010 Hi jaapv, Take a look here Fringing: Technical problem. I'm sure you'll find what you were looking for!
Photon42 Posted February 14, 2010 Share #2 Posted February 14, 2010 Partially desaturate? Just tried it within a minute. Maybe the color selection needs a bit more work still for the blues (pun intended ) Welcome, dear visitor! As registered member you'd see an image here… Simply register for free here – We are always happy to welcome new members! Rgds Ivo Link to post Share on other sites Simply register for free here – We are always happy to welcome new members! Rgds Ivo ' data-webShareUrl='https://www.l-camera-forum.com/topic/112637-fringing-technical-problem/?do=findComment&comment=1225689'>More sharing options...
jaapv Posted February 14, 2010 Author Share #3 Posted February 14, 2010 Not quite what I meant.... Link to post Share on other sites More sharing options...
Guest WPalank Posted February 14, 2010 Share #4 Posted February 14, 2010 Jaap, Very ironic. Just yesterday I was out at the Mavericks Big Wave Surfing competition with my M9 and 75mm Summilux and took some quick ones while running from some rogue waves that crashed into the spectators dragging and pushing people around (enough that some people broke some bones). Anyway, two of the shots, again no composition or metering) are really fringed out. In LR (haven't tried LR 3 beta yet) I could reduce it only slightly and found Dfine noise reducing plug-in to be no help whatsoever. I was planning to turn to someone like yourself with a great amount of Capture One for advice as I thought there was a tool within the software. I have no answer. Link to post Share on other sites More sharing options...
250swb Posted February 15, 2010 Share #5 Posted February 15, 2010 As a quick way I'd decide which highlight tone is correct and just use the colour replacement brush in Photoshop. I can' see it taking longer than a minute or two. Steve Link to post Share on other sites More sharing options...
250swb Posted February 15, 2010 Share #6 Posted February 15, 2010 Maybe not perfect but one minute with the colour replacement brush. Welcome, dear visitor! As registered member you'd see an image here… Simply register for free here – We are always happy to welcome new members! Link to post Share on other sites Simply register for free here – We are always happy to welcome new members! ' data-webShareUrl='https://www.l-camera-forum.com/topic/112637-fringing-technical-problem/?do=findComment&comment=1226501'>More sharing options...
jaapv Posted February 15, 2010 Author Share #7 Posted February 15, 2010 Advertisement (gone after registration) A very practical solution, Steve Link to post Share on other sites More sharing options...
wparsonsgisnet Posted February 15, 2010 Share #8 Posted February 15, 2010 Japp, you have C1-Pro? Can you just dial down the red and magenta in the color management section? Link to post Share on other sites More sharing options...
Guest WPalank Posted February 15, 2010 Share #9 Posted February 15, 2010 Here's one of my images from the other day in the midst of a rogue wave hitting spectators and washing stuff into the bay. (I didn't notice the guy hanging onto a rock in this image at the time.) Welcome, dear visitor! As registered member you'd see an image here… Simply register for free here – We are always happy to welcome new members! I found LR 2.6.1 to be quite effective by going into the Develop Module> Details Panel>Chromatic Aberrations and selecting "Defringe: All Edges". You have to view the image at 100% in order for it to work. Then when you zoom back in, it's as if you turned off the effect (bug?). But once you create a TFF and export to CS4, for example, the defringing has worked on your image. Link to post Share on other sites Simply register for free here – We are always happy to welcome new members! I found LR 2.6.1 to be quite effective by going into the Develop Module> Details Panel>Chromatic Aberrations and selecting "Defringe: All Edges". You have to view the image at 100% in order for it to work. Then when you zoom back in, it's as if you turned off the effect (bug?). But once you create a TFF and export to CS4, for example, the defringing has worked on your image. ' data-webShareUrl='https://www.l-camera-forum.com/topic/112637-fringing-technical-problem/?do=findComment&comment=1226800'>More sharing options...
jaapv Posted February 15, 2010 Author Share #10 Posted February 15, 2010 Jaap, you have C1-Pro? Can you just dial down the red and magenta in the color management section? Yes, Bill, I can. But I would have to dial down red, blue and magenta. In this image that would not matter, but normally the whole colour balance would be upset. Link to post Share on other sites More sharing options...
250swb Posted February 15, 2010 Share #11 Posted February 15, 2010 Defringing in ACR can only do so much with conventional fringing anyway, and desaturating certain colours throws the whole image out of whack, if not important details. I did a quick job with the colour replacement brush and the process accidentally obliterated the orange of the birds beaks, but if I'd have taken longer I would have just selected a smaller brush and gone around them. But its a good tool, because when you have fringing left over after using the ACR CA tool, say like the blues or purples you get in amongst tree branches, you just choose the colour of the branch, or sky, and replace the fringe colour with that, in just the part of the image that needs it. Its quicker that making masks or selections to do the same job, and doesn't affect any other part of the image. Steve Link to post Share on other sites More sharing options...
K Davis Posted February 17, 2010 Share #12 Posted February 17, 2010 Mmm, depends how much re-learning you are willing to do. My whole post capture processing has been totally revolutionised by Dan Margulis' book - Photoshop LAB Color - The Canyon Conundrum and Other Adventures in the Most Powerful Color Space. This really is revolutionary, it takes you into the realm of image management more powerful than you can imagine BUT you have to be prepared to learn a totally new way of doing it. It will take months of reading (well it has me anyway) but the simple stuff shows immediate and dramatic improvement to your images within the first ten pages of the book and with easy images you find yourself improving things in a few seconds where it would've taken hours using RGB based methods. With the problem you have here you would have to work on the A and B channels using his advanced techniques and learn how to adjust these as copied selections or masks that let you select all the magenta areas, particularly the highlights and then adjust just these selected areas away from magenta to a more neutral colour using curves in the A channel (told you it wasn't easy to describe!) You would adjust overly blue areas in the B channel using the selected areas. I'm only just getting my head around some of the advanced stuff like this so I'd struggle to show you how to do it. Dan shows you how to - the book is very well written and even the advanced stuff can be followed but you have to read it a few times. I hope this is helpful. This book is the best investment I've ever made and showed me the true power of Photoshop BUT I have heard of people who threw the book against the wall a few times. Ken Davis Link to post Share on other sites More sharing options...
jaapv Posted February 17, 2010 Author Share #13 Posted February 17, 2010 Yep- read it three times. The headache it gave me was much diminished the third time Still I did not manage to get it completely right without shifting into green, and the fact that I needed to correct three colours of fringe complicated matters too much for me. Probably Dan could do it in three seconds flat, but after a year I'm still on the shoulder of the learning curve. Link to post Share on other sites More sharing options...
faraz Posted March 27, 2010 Share #14 Posted March 27, 2010 Just took this picture. I must say, this has to be something I am doing wrong because this is crazy (this is after defringing). p.s. I am attaching a scaled down version of the almost complete picture as well so it doesn't look like I was focused entirely on the statue. This was taken with the f0.95 noctilux on an M9. Welcome, dear visitor! As registered member you'd see an image here… Simply register for free here – We are always happy to welcome new members! Link to post Share on other sites Simply register for free here – We are always happy to welcome new members! ' data-webShareUrl='https://www.l-camera-forum.com/topic/112637-fringing-technical-problem/?do=findComment&comment=1274509'>More sharing options...
Jamie Roberts Posted March 29, 2010 Share #15 Posted March 29, 2010 Jaap-- A few ways to skin that one in post. Here's one. 1) add a saturation layer in PS 2) destaturate the reds. Select the + eyedropper and make sure you get the red / magenta purple nonsense there. Desaturate them till they're gone At this point, your shot will be a lot better because it's the purple that doesn't belong in the water. In truth, there isn't a ton of colour in that shot anyway, but the blue speculars are a lot more "natural" than the red ones Anyway, 3) add another saturation layer on top 4) desaturate the blues / cyans. Select the + eyedropper. 5) Now there won't be much colour left, so go to your "blue desaturation layer" and double click on the layer to bring up layer options. 6) in layer options, where you see the sliders that say "Blend if gray".. this layer, then split the sliders so that only grays above about 220/220/220 are affected (only highlights). 7) Paint back in the rest of any other affected blue in the blue desaturation layer" mask. There you go Not the quickest, but it will definitely work. Welcome, dear visitor! As registered member you'd see an image here… Simply register for free here – We are always happy to welcome new members! Link to post Share on other sites Simply register for free here – We are always happy to welcome new members! ' data-webShareUrl='https://www.l-camera-forum.com/topic/112637-fringing-technical-problem/?do=findComment&comment=1277150'>More sharing options...
jaapv Posted March 30, 2010 Author Share #16 Posted March 30, 2010 thanks Jamie. I'm going to print this one out Link to post Share on other sites More sharing options...
Jamie Roberts Posted March 30, 2010 Share #17 Posted March 30, 2010 thanks Jamie. I'm going to print this one out My pleasure Jaap--let me know if you need a screen shot or two; some of those layer option dialogs are pretty obscure Link to post Share on other sites More sharing options...
jaapv Posted March 30, 2010 Author Share #18 Posted March 30, 2010 No - I can handle them, but thank you. Link to post Share on other sites More sharing options...
Recommended Posts
Archived
This topic is now archived and is closed to further replies.