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How To Correct Night Yellow Lights?  
User currently offlineMirage From Portugal, joined May 1999, 3125 posts, RR: 14
Posted (10 years 10 months 2 days 2 hours ago) and read 3209 times:

What are the appropriate steps in Photoshop to eliminate the yellowish aspect generated by airport yellow illumination such as in this image bellow?

Do you play with Color Balance and Selective Color or is there another way?

For example, this fuselage is white, I don't want to make it white in this situation because it would look unnatural but I would like to eliminate the yellow tone.



thanks
Luis

21 replies: All unread, jump to last
 
User currently offlineWietse From Netherlands, joined Oct 2001, 3809 posts, RR: 55
Reply 1, posted (10 years 10 months 2 days 2 hours ago) and read 3171 times:

Might not be the most professional answer possible, but a quick tap on the Auto levels function did quite some good!

Wietse



Wietse de Graaf
User currently offlineSerge From United States of America, joined Sep 2001, 1989 posts, RR: 2
Reply 2, posted (10 years 10 months 2 days 2 hours ago) and read 3162 times:

Luis,

You can always go to the hue/saturation box and select the specific color of the cast then increase the lightness (only for the color thats harming the image) and/or decrease the saturation. Always works great for me and produces a more natural white light - I tired it on your image however and it didn't work the best, maybe it would with a larger size version?

Serge


User currently offlineMirage From Portugal, joined May 1999, 3125 posts, RR: 14
Reply 3, posted (10 years 10 months 2 days 2 hours ago) and read 3151 times:

Thanks, both suggestions gave me new tools that really make difference. The Auto Levels was a good surprise to me  Wow!, hue/saturation permits fine tunning  Smile

Luis


User currently offlineWietse From Netherlands, joined Oct 2001, 3809 posts, RR: 55
Reply 4, posted (10 years 10 months 2 days 2 hours ago) and read 3145 times:

Luis, be careful when using it. In shots taken in sunlight the contrast tends to get too high after using the function
W



Wietse de Graaf
User currently offlineMirage From Portugal, joined May 1999, 3125 posts, RR: 14
Reply 5, posted (10 years 10 months 2 days 2 hours ago) and read 3144 times:

Yes Wietse, my "problem" was only with night ramp shots, I was looking for a method to eliminate the yellow tone caused by artificial illumination.

Luis


User currently offlineWietse From Netherlands, joined Oct 2001, 3809 posts, RR: 55
Reply 6, posted (10 years 10 months 2 days 2 hours ago) and read 3139 times:

Yeah I know, but when you have a sunlight shot and you think the color balance isnt completely on target, you can use auto levels too. Just lower the contrast afterwards.


Wietse de Graaf
User currently offlineMirage From Portugal, joined May 1999, 3125 posts, RR: 14
Reply 7, posted (10 years 10 months 2 days 2 hours ago) and read 3133 times:

I see, sometimes auto levels work but with sunlight I prefer to slide manually the levels bars across the histogram. However, at dusk, some images are very difficult to be corrected, if you increase light you increase noise, if you don't increase you get some parts completly black with no detail.

Luis


User currently offlineExitRow From , joined Dec 1969, posts, RR:
Reply 8, posted (10 years 10 months 2 days 1 hour ago) and read 3130 times:

Luis,
If you're shooting RAW and using Photoshop 7 with the RAW plug-in or Photoshop CS, you can adjust the temperature and white balance before converting to the Photoshop workspace.

I would also advise using the color balance bars and move the sliders away from yellow.

Good luck.

William


User currently offlineMirage From Portugal, joined May 1999, 3125 posts, RR: 14
Reply 9, posted (10 years 10 months 2 days 1 hour ago) and read 3114 times:

Thanks William, I don't shoot RAW but the help so far is enough for my needs.

Luis


User currently offlinePhotopilot From Canada, joined Jul 2002, 2737 posts, RR: 18
Reply 10, posted (10 years 10 months 2 days ago) and read 3099 times:

One other method that works quite well is in Photoshop convert the file Mode to CMYK, then I go to the Adjust Curves, select the yellow curve and adjust the yellow out. Especially if you lower the yellow curve from the highlights it works quite well. Then convert back to RGB and adjust levels, or Auto levels if it doesn't go too far.

Steve


User currently offlineUngoMongo From Denmark, joined Aug 2001, 146 posts, RR: 1
Reply 11, posted (10 years 10 months 1 day 16 hours ago) and read 3054 times:

Luis,

Check out this site:
http://www.gurusnetwork.com/tutorials/photoshop/curves3.html

By the way, it has some really neat descriptions in effects.

Cheers

Kenneth



Becoming a dad is the greatest.
User currently offlineCkw From UK - England, joined Aug 2010, 737 posts, RR: 16
Reply 12, posted (10 years 10 months 1 day 14 hours ago) and read 3037 times:

On the use of auto-levels/auto-contrast, I find this tends to produce far too contrasty an image, however, it does often help with the colours - it's just too extreme. A useful trick to remember is that in PS, most effects can be faded - under the Edit menu, you should see "Fade [last command name]".

Knocking back an "auto" command to between 30-50% often gets you in the ballbark.

For this kind of shot, though, you might want to try thinking of it photographically - what filter would you use to alter the colour temperature?

Photoshop CS has a number of standard colour correction filters built in, but there are plenty of plugins available for earlier versions of PS.

Cheers,

Colin



Colin K. Work, Pixstel
User currently offlineMirage From Portugal, joined May 1999, 3125 posts, RR: 14
Reply 13, posted (10 years 10 months 1 day 7 hours ago) and read 2984 times:

Thanks all for the great help. Colin, about your question, I don't have photography theory knowledge (unfortunately), I simply don't know what kind of filter can alter the colour temperature.

But, on the other hand, I don't want to use filters because I don't want to buy a 72mm filter when I can use Photoshop to make the adequate corrections later at home. If Photoshop didn't exist I would think different  Smile

Luis


User currently offlineRydawg82 From United States of America, joined Sep 2001, 864 posts, RR: 8
Reply 14, posted (10 years 10 months 1 day 3 hours ago) and read 2943 times:

While I know your question refers to how to work with the image after the fact, I have had pretty good luck myself with using the white balance feature on my camera (Sony F-707) at the time of spotting. Either nighttime ramp shots and/or cabin shots (sporting the wonderful Boeing Yellowish Interior) are greatly improved with these settings. Leaves little to be done in Photoshop afterwards.

This shot was taken with full yellow lights, used the white balance feature, and she's white! Don't know if this is good practice, but it works for me.

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Photo © Ryan Spencer Morgheim - The Arctic Adventure



Ryan

[Edited 2003-11-21 22:32:06]


You can take the pup out of Alaska, but you can't take the Alaska out of the pup.
User currently offlineMirage From Portugal, joined May 1999, 3125 posts, RR: 14
Reply 15, posted (10 years 10 months 1 day 3 hours ago) and read 2935 times:

Interesting Ryan, did you made a custom white balance or is that an auto function of the camera?

Luis


User currently offlinePhotopilot From Canada, joined Jul 2002, 2737 posts, RR: 18
Reply 16, posted (10 years 10 months 1 day 1 hour ago) and read 2909 times:

The correct filters for converting TUNGSTEN lighting to Daylight color balance film (or digital) is an 80B. An 80A is slightly less blue, while the 80C is slightly darker blue.
However not all airport lights are Tungsten lighting. Many lights today are High Pressure Sodium bulbs which have a very narrow color spectrum and are virtually impossible to filter correctly without a color temperature meter and a full range of CC filters. If you can do it in Photoshop it is a whole lot easier and less costly.
If the lighting is fluorescent (cool white bulbs), then use a 30M (magenta) to get rid of the green cast. For warm white bulbs about 20M will usually do.
The only people that really have to worry about doing it in the camera are those who shoot color transparency films.

Steve


User currently offlineRydawg82 From United States of America, joined Sep 2001, 864 posts, RR: 8
Reply 17, posted (10 years 10 months 1 hour ago) and read 2863 times:

Luis,

That is is using the standard white balance correction on the camera (Sony F-707). It corrects the colours greatly. It's not 100% perfect, however it made things much easier, especially cabin shots.

Ryan



You can take the pup out of Alaska, but you can't take the Alaska out of the pup.
User currently offlineLear45 From United Kingdom, joined Nov 2000, 55 posts, RR: 0
Reply 18, posted (10 years 9 months 3 weeks 4 days 3 hours ago) and read 2740 times:

I use the F-707 too, and I carry around a piece of white paper taped to a bit of cardboard at night. With the 707 you select custom white balance, and then press a smaller button under the white balance selctor button, while holding the white board in front of the camera illuminated by the ambient light, whatever that may be. At Newcastle we have white lights and orange lights, so I have to set the white balance accordingly to whatever stand the aircraft is on.


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Photo © Andrew Hutchings



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Photo © Andrew Hutchings



Andy


User currently offlineSkymonster From , joined Dec 1969, posts, RR:
Reply 19, posted (10 years 9 months 3 weeks 4 days 2 hours ago) and read 2730 times:

Not difficult... Usually, I find it easiest and quickest to identify an area in the photo that should be white, and then go into adjust levels, click on the white point selector (dropper) and then click on the white point I've decided on in the photo. Result - viola...

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Photo © Andy Martin


Andy


User currently offlineTZ From United Kingdom, joined Mar 2003, 1085 posts, RR: 52
Reply 20, posted (10 years 9 months 3 weeks 4 days 2 hours ago) and read 2728 times:
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One very tricky scenario, either directly from the RAW image or by using levels, is when half the aircraft is in white-ish light and the other half in orange lights.

I guess one could convert the image twice then "composite" the two images in Photoshop, but that's cheating. I find that leaving a little orange hue in the image looks better than having too much blue hue (which is what you get if you overdo it).

This was certainly the most difficult one I have attempted to adjust. Every light in that shopping centre gave out different colours. I'm not saying that I succeeded, by the way!

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Photo © TZ Aviation


Tamsin



TZ Aviation - Aeropuerto de los Banditos Team Images
User currently offlineGranite From UK - Scotland, joined May 1999, 5568 posts, RR: 63
Reply 21, posted (10 years 9 months 3 weeks 4 days 1 hour ago) and read 2725 times:
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Hi all

For reference, Photoshop CS (8) has a Photo Filter menu and when you select the Cooling Filter, this reduces the amount of yellow.

Images look pretty good.

Cheers

Gary Watt


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