Need advise on the lights of street lamps

Richter · 9th April 2008

I notice that the lamps have some wierd blue and pink flow around them. I took the picture in raw + basic. Even the basic Jpeg have the same issue.

I am using a D70s with 70-300mm lense withour filter with hood on.
Shutter: 1/4
Aperture: 4.2
focal length at 95mm
ISO 200

Can anyone advise what causes it? Is it normal?

Thank you.

brianop87 · 9th April 2008

Try to check and tweak the white balance on your RAW file using any software that can modify the RAW file..such as Lightroom or Adobe Photoshop, or probably using the Nikon bundled software

.... I think that is using the cooler white balance around 3000-3500...makes the tungsten light at the Fullerton Hotel become white

As an advice take the picture in aperture 8 or 11 for the sharpness if you are using tripod..cheers

Richter · 9th April 2008

I have tried tweaking the WB/ However, it does not resolve the issue of the blue and pink ring around the light source.

brianop87 · 10th April 2008

I think its because the lens is wide open..f4.2 makes some fringing of purple and pinky around source of light... try shooting with bigger f...like 8 - 11 ...I also ever counter something like that but in f1.2 opening...hope this help

That happen because of the spectrum of colors ...

sunboi80 · 10th April 2008

I dun see the the purple blue thing le... perhaps u can crop out one subject and show?
if it's purple fringing (happens to most cheap lens) i think can't be help but can use PS to make it less visible

catchlights · 10th April 2008

Chromatic aberration

.

Richter · 10th April 2008

mmm. So i guess it cannot be helped. I can only buy a better lens to reduce the effect.

kekekeke

brianop87 · 11th April 2008

Try to shoot other light object first at night using different aperture value starting from biggest opening till 8 or 11 and notice the difference, if it still happening the consider to buy better lens

Richter · 11th April 2008

mmm I have tried using the smallest aperture with long shutter of about 30 sec. but I realise the the burntout of the light source area also increase. However, there will be no such issue. I guess I'll try using a middle range of the aperture again as well to try to balance it.

brianop87 · 12th April 2008

8 to 11 would be enough actuallly...but the lamp will shape more like a star..

9th April 2008	#1
Richter Member Join Date: Sep 2005 Posts: 106	Need advise on the lights of street lamps I notice that the lamps have some wierd blue and pink flow around them. I took the picture in raw + basic. Even the basic Jpeg have the same issue. I am using a D70s with 70-300mm lense withour filter with hood on. Shutter: 1/4 Aperture: 4.2 focal length at 95mm ISO 200 Can anyone advise what causes it? Is it normal? Thank you.

9th April 2008	#2
brianop87 Member Join Date: Feb 2008 Posts: 311	Re: Need advise on the lights of street lamps Try to check and tweak the white balance on your RAW file using any software that can modify the RAW file..such as Lightroom or Adobe Photoshop, or probably using the Nikon bundled software .... I think that is using the cooler white balance around 3000-3500...makes the tungsten light at the Fullerton Hotel become white As an advice take the picture in aperture 8 or 11 for the sharpness if you are using tripod..cheers __________________ It's just a matter of taste with passion...just watch and learn... Last edited by brianop87; 9th April 2008 at 09:03 PM.

9th April 2008	#3
Richter Member Join Date: Sep 2005 Posts: 106	Re: Need advise on the lights of street lamps I have tried tweaking the WB/ However, it does not resolve the issue of the blue and pink ring around the light source.

10th April 2008	#4
brianop87 Member Join Date: Feb 2008 Posts: 311	Re: Need advise on the lights of street lamps I think its because the lens is wide open..f4.2 makes some fringing of purple and pinky around source of light... try shooting with bigger f...like 8 - 11 ...I also ever counter something like that but in f1.2 opening...hope this help That happen because of the spectrum of colors ... __________________ It's just a matter of taste with passion...just watch and learn... Last edited by brianop87; 10th April 2008 at 03:25 AM.

10th April 2008	#5
sunboi80 Member Join Date: Jun 2006 Location: West of SG Posts: 606	Re: Need advise on the lights of street lamps I dun see the the purple blue thing le... perhaps u can crop out one subject and show? if it's purple fringing (happens to most cheap lens) i think can't be help but can use PS to make it less visible __________________ ;) L-plate Photog: I come, I see, I shoot

10th April 2008	#6
catchlights Senior Member Join Date: Sep 2004 Location: Punggol Posts: 10,794	Re: Need advise on the lights of street lamps Chromatic aberration . __________________ Shoot to Live, Live to Shoot www.foto-u.com \| www.benjaminloo.com \| email

11th April 2008	#8
brianop87 Member Join Date: Feb 2008 Posts: 311	Re: Need advise on the lights of street lamps Try to shoot other light object first at night using different aperture value starting from biggest opening till 8 or 11 and notice the difference, if it still happening the consider to buy better lens __________________ It's just a matter of taste with passion...just watch and learn...

12th April 2008	#10
brianop87 Member Join Date: Feb 2008 Posts: 311	Re: Need advise on the lights of street lamps 8 to 11 would be enough actuallly...but the lamp will shape more like a star.. __________________ It's just a matter of taste with passion...just watch and learn...