John Mitchell Posted February 25, 2014 Share Posted February 25, 2014 I would appreciate some advice on this one. If you look closely at the 100% crop below, you will see a red ring around the inside of the ceiling lamps. It looks like CA. However, as far as I can make out, it isn't. At any rate, there is no way I can get rid of it. Am I headed to the you-know-what if I submit this image? I recently emerged from over a month in the Sin Bin and have no desire to renew my membership. P.S. I found an image (see link below) on Alamy that appears to have the same red rings around ceiling lights. Can I trust QC to be consistent with their verdict? There's always a chance that this one was not inspected. http://c8.alamy.com/comp/8/%7BDB564F62-6310-4FC7-B596-DD576769E3D8%7D/AR8K58.jpg Thanks, -John M Link to comment Share on other sites More sharing options...
parischris Posted February 25, 2014 Share Posted February 25, 2014 I would appreciate some advice on this one. If you look closely at the 100% crop below, you will see a red ring around the inside of the ceiling lamps. It looks like CA. However, as far as I can make out, it isn't. At any rate, there is no way I can get rid of it. Am I headed to the you-know-what if I submit this image? I recently emerged from over a month in the Sin Bin and have no desire to renew my membership. P.S. I found an image (see link below) on Alamy that appears to have the same red rings around ceiling lights. Can I trust QC to be consistent with their verdict? There's always a chance that this one was not inspected. http://c8.alamy.com/comp/8/%7BDB564F62-6310-4FC7-B596-DD576769E3D8%7D/AR8K58.jpg Thanks, -John M John, It looks like red fringing to me. I use LR almost exclusively now, so I would use the defringing tool in LR to try to remove it. I spend a lot of time checking for purple and red fringing (my canon 24-105 lens and X-Pro 1 18mm lens are culprits), and I find that tool to be the quickest way to deal with it. Cheers Chris Link to comment Share on other sites More sharing options...
John Mitchell Posted February 25, 2014 Author Share Posted February 25, 2014 Thanks, Chris, but unfortunately I'm not using LR. This image was shot in JPEG mode with in-camera auto CA correction enabled. This usually does an excellent job of removing red/cyan CA. I've also tried using the sliders in PTLens, a reliable program that I sometimes use to correct CA. I'm not sure what is causing the red rings. They might just be a characteristic of this type of lighting. Link to comment Share on other sites More sharing options...
dustydingo Posted February 25, 2014 Share Posted February 25, 2014 In such circumstances I simply do a little selective de-saturation on the errant pixels. Simple, and no one is going to notice, trust me . . . especially where the adjoining areas are greyish anyway. But of course, I don't draw attention to it beforehand in the forum . . . dd Link to comment Share on other sites More sharing options...
spacecadet Posted February 25, 2014 Share Posted February 25, 2014 It's colour flare, not CA. Don't worry about it. QC know the difference. FWIW I can hardly see it on my laptop. Link to comment Share on other sites More sharing options...
Guest Posted February 25, 2014 Share Posted February 25, 2014 I would appreciate some advice on this one. If you look closely at the 100% crop below, you will see a red ring around the inside of the ceiling lamps. It looks like CA. However, as far as I can make out, it isn't. At any rate, there is no way I can get rid of it. Am I headed to the you-know-what if I submit this image? I recently emerged from over a month in the Sin Bin and have no desire to renew my membership. P.S. I found an image (see link below) on Alamy that appears to have the same red rings around ceiling lights. Can I trust QC to be consistent with their verdict? There's always a chance that this one was not inspected. http://c8.alamy.com/comp/8/%7BDB564F62-6310-4FC7-B596-DD576769E3D8%7D/AR8K58.jpg Thanks, -John M Takes a couple of seconds to remove that with a colour layer and just sample the grey and paint out the red. Link to comment Share on other sites More sharing options...
Colin Woods Posted February 25, 2014 Share Posted February 25, 2014 Hi Geoff Can you explain your colour layer method? For something like that I would select the red pixels and desaturate as dustydingo said, but I am always happy to add new techniques. Especially as sometimes I find the desaturate method can be a pain. Cheers Col Link to comment Share on other sites More sharing options...
Guest Posted February 25, 2014 Share Posted February 25, 2014 Hi Geoff Can you explain your colour layer method? For something like that I would select the red pixels and desaturate as dustydingo said, but I am always happy to add new techniques. Especially as sometimes I find the desaturate method can be a pain. Cheers Col Just add a new layer (cntrl+shift+n), set the blend mode to color in the drop down menu (why Adobe puts one of the most useful down at the bottom I don't know!!) and then with the brush, alt click a suitable colour in the image and paint on the new layer- this is where a Wacom etc is very useful. You can then change the fill or opacity to suit. If you use it a lot (and I do) you can have it as an action. Link to comment Share on other sites More sharing options...
Duncan_Andison Posted February 25, 2014 Share Posted February 25, 2014 Hi Geoff Can you explain your colour layer method? For something like that I would select the red pixels and desaturate as dustydingo said, but I am always happy to add new techniques. Especially as sometimes I find the desaturate method can be a pain. Cheers Col Just add a new layer (cntrl+shift+n), set the blend mode to color in the drop down menu (why Adobe puts one of the most useful down at the bottom I don't know!!) and then with the brush, alt click a suitable colour in the image and paint on the new layer- this is where a Wacom etc is very useful. You can then change the fill or opacity to suit. If you use it a lot (and I do) you can have it as an action. Nice one.... I'll try that one as well next time. Normally I just use a paint tool and brush it out, or, select just that element and removed the offending colour in Hue & Saturation. Link to comment Share on other sites More sharing options...
Colin Woods Posted February 25, 2014 Share Posted February 25, 2014 Fab, thanks Geoff. I don't think I have ever used colour blending mode. Looks like some homework and playtime for me coming up. Col Link to comment Share on other sites More sharing options...
Robert Brook Posted February 25, 2014 Share Posted February 25, 2014 Another method is to use Color Range: http://helpx.adobe.com/photoshop/using/selecting-color-range-image.html Initially use the feathered lasoo to roughly isolate the relevant area/s, then the sample brush (Select>Color Range) to select the colours you want to change (fuzziness about 10). Copy and paste, then you have a separate layer containg only the element you are changing. This way you can try a variety of methods to change/blend the layer with the background, useful for many different kinds of operations including noise reduction. Link to comment Share on other sites More sharing options...
Ed Rooney Posted February 25, 2014 Share Posted February 25, 2014 Can I (have I?) desaturate a specific color channel on LR5? Link to comment Share on other sites More sharing options...
Ed Rooney Posted February 25, 2014 Share Posted February 25, 2014 Oh, I think I'm remembering (or not remembering) desaturating colors in Nikon NX2, using color points. I know I've done this somewhere other than Photoshop. Link to comment Share on other sites More sharing options...
John Mitchell Posted February 25, 2014 Author Share Posted February 25, 2014 It's colour flare, not CA. Don't worry about it. QC know the difference. FWIW I can hardly see it on my laptop. I agree, Mark, this is flare, not CA. Adjusting CA sliders has no effect on it. There is also no CA visible anywhere in the photo. Not sure I want to get into complicated (for me) PS colour corrections if it isn't necessary. However, I'm really paranoid these days, so I'll have to build up my courage before submitting this one. Sometimes I feel as if QC has hired the ghost of Sherlock Holmes to examine my images with his magnifying glass. Link to comment Share on other sites More sharing options...
spacecadet Posted February 25, 2014 Share Posted February 25, 2014 I must have no end of this sort of thing in my images (I don't know, I don't look for it) so I wouldn't worry, but then I've never been in the SB. I bet this has some or this or this Link to comment Share on other sites More sharing options...
John Mitchell Posted February 25, 2014 Author Share Posted February 25, 2014 I would appreciate some advice on this one. If you look closely at the 100% crop below, you will see a red ring around the inside of the ceiling lamps. It looks like CA. However, as far as I can make out, it isn't. At any rate, there is no way I can get rid of it. Am I headed to the you-know-what if I submit this image? I recently emerged from over a month in the Sin Bin and have no desire to renew my membership. P.S. I found an image (see link below) on Alamy that appears to have the same red rings around ceiling lights. Can I trust QC to be consistent with their verdict? There's always a chance that this one was not inspected. http://c8.alamy.com/comp/8/%7BDB564F62-6310-4FC7-B596-DD576769E3D8%7D/AR8K58.jpg Thanks, -John M Takes a couple of seconds to remove that with a colour layer and just sample the grey and paint out the red. Thanks, Geoff. This seems to be the easiest method of cleaning things up. And I'm into easy these days. Link to comment Share on other sites More sharing options...
John Mitchell Posted February 25, 2014 Author Share Posted February 25, 2014 I must have no end of this sort of thing in my images (I don't know, I don't look for it) so I wouldn't worry, but then I've never been in the SB. I bet this has some or this or this If you've never been binned, you're a lucky man. It's a bit like landing on flypaper. As soon as you manage to free one leg, another one gets stuck. Link to comment Share on other sites More sharing options...
John Mitchell Posted February 25, 2014 Author Share Posted February 25, 2014 But of course, I don't draw attention to it beforehand in the forum . . . dd I don't believe that Alamy has any problem with us cleaning up images as long as the results don't look over-manipulated. Link to comment Share on other sites More sharing options...
dustydingo Posted February 26, 2014 Share Posted February 26, 2014 But of course, I don't draw attention to it beforehand in the forum . . . dd I don't believe that Alamy has any problem with us cleaning up images as long as the results don't look over-manipulated. Of course!! Who is suggesting otherwise? However. . . your posts indicate you were/are considering submitting the image in quesiton without alteration, to which you have indeed drawn attention beforehand: Not sure I want to get into complicated (for me) PS colour corrections if it isn't necessary. However, I'm really paranoid these days, so I'll have to build up my courage before submitting this one. As I said, that is not a strategy I would follow, for pretty obvious (to me) reasons. Each to their own of course. dd Link to comment Share on other sites More sharing options...
John Mitchell Posted February 26, 2014 Author Share Posted February 26, 2014 But of course, I don't draw attention to it beforehand in the forum . . . dd I don't believe that Alamy has any problem with us cleaning up images as long as the results don't look over-manipulated. Of course!! Who is suggesting otherwise? However. . . your posts indicate you were/are considering submitting the image in quesiton without alteration, to which you have indeed drawn attention beforehand: Not sure I want to get into complicated (for me) PS colour corrections if it isn't necessary. However, I'm really paranoid these days, so I'll have to build up my courage before submitting this one. As I said, that is not a strategy I would follow, for pretty obvious (to me) reasons. Each to their own of course. dd There was no strategy on my part, mate. I'm not trying to pull the wool over anyone's eyes, just trying to get some expert opinions about this particular image -- i.e. whether I should submit as is or clean up the flare or whatever it is. There have been some very helpful suggestions. Thanks everyone for all the feedback. Link to comment Share on other sites More sharing options...
dustydingo Posted February 26, 2014 Share Posted February 26, 2014 John, I'm not for one iota suggesting you are trying to pull the wool over anyone's eyes . . . I said what I, and it well may be I alone, think: simply that if I was going to submit an image I had doubts about and was worried about QC, I would not post such misgivings in the forum beforehand. Please, try not to read more into it--I in fact thought I was hinting at something helpful . . . dd Link to comment Share on other sites More sharing options...
AndyMelbourne Posted February 26, 2014 Share Posted February 26, 2014 There is of course another completely different option and in my opinion the correct one. When I edit a photo and I think there is a risk that it may fail, due to either image quality or QC's interpretation, then I simply do not upload it. The main problem with most people's failures is being led by your heart rather than your head. I must admit though that I have been twitching a little over the RX100 uploads as my QC is good without a fail (apart from stockimo) since Jan 2010. As the saying goes when reversing a large vehicle, "if in doubt get out" Andy Link to comment Share on other sites More sharing options...
dustydingo Posted February 26, 2014 Share Posted February 26, 2014 There is of course another completely different option and in my opinion the correct one. When I edit a photo and I think there is a risk that it may fail, due to either image quality or QC's interpretation, then I simply do not upload it. The main problem with most people's failures is being led by your heart rather than your head. I must admit though that I having been twitching a little over the RX100 uploads as my QC is good without a fail (apart from stockimo) since Jan 2010. As the saying goes when reversing a large vehicle, "if in doubt get out" Andy Well yes . . . my QC record is what it is because of judicious use of that particular option. dd Link to comment Share on other sites More sharing options...
John Mitchell Posted February 26, 2014 Author Share Posted February 26, 2014 I too usually adhere to the "if in doubt, don't submit" philosophy. But during the past year or so I've been surprised by some of QC's judgment calls -- i.e. images that I thought were fine technically ended up failing. This has left me somewhat confused about what is and isn't acceptable these days. Often the only way to find out -- as with the image in question -- is to submit and face the possibility of being sent to Rehab for a month (in my case, anyway), Not exactly a thrilling prospect. Regarding posting an image that I have misgivings about, I can definitely see dd's point about not putting it on the forum. However, I can't help feeling that the resulting discussions can be valuable. Alamy's QC guidelines are very thorough, but they can't possibly cover everything. I've learned quite a bit in the past from forum conversations about images with possible problem areas. Perhaps I'm taking a chance, but the future benefits will hopefully outweigh the present risks. Link to comment Share on other sites More sharing options...
John Mitchell Posted February 28, 2014 Author Share Posted February 28, 2014 By way of an update, it turns out I wasn't headed for the Sin Bin after all. I used a bit of selective de-saturation to remove the red rings around the lights and submitted the images yesterday. They have passed QC. The flare (?) corrections were probably overkill, but better safe than sorry. Thanks again for all the advice. -John M Link to comment Share on other sites More sharing options...
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