Blue cast on whites - DPChallenge Forums

Canon EF 70-200mm f/4.0L USM

01/03/2003 02:49:26 AM · #1

For some reason on some of the photo's that I take there is a blue glare or outline around the white's in some of my pictures. Has anyone else run into this. Does it have something with taking the pictures with a digital camera? Is it somethine with my camera? Or just glare? Help!!

byetko

Canon EOS-5D

01/03/2003 02:59:26 AM · #2

Try adjusting the white balance on your camera. Some cameras naturally produce a slightly blue or red tint to photos. Try adjusting the color balance in your editing program. Hope this helps.

jimmythefish

Canon EOS-10D

Canon EF 17-40mm f/4.0L USM

01/03/2003 03:08:52 AM · #3

Can you provide an example? It could be white balance, or it could be what's referred to as 'chromatic abberation' or 'fringing' which is typically a magenta halo effect around overexposed areas of an image. My camera has a fairly bad case of it sometimes. Your D100 shouldn't really be doing this to any extent...giving us an example might help.

01/03/2003 04:00:03 AM · #4

It doesn't do it all the time. I don't know if I'm overexposing pictures or what. Here are two examples. Blue tint

It only does that when the sun is out. I used the lens shield thing today and it didn't happen as bad.

01/03/2003 04:03:20 AM · #5

Originally posted by jimmythefish:

I am not sure anymore, but I believe to have read that one reason for chromatic abberations is the lens you use. Searching.......

//www.dpreview.com/learn/Glossary/Optical/Chromatic_Aberrations_01.htm

So a D100 could be doing it because of a bad lens.
My P1 with its cheap lens has a lot of CA and blooming. The 602 with is more expensive lens with aspherical elements has very little.
I think that it is most likely at wideangle and when the aperture is in the open range F1.4-F3.6.

01/03/2003 04:07:09 AM · #6

Originally posted by Jubei Kibagami:

I think it is CA. What kind of lens was used and what was the aperture?

Canon EF 28-135mm f/3.5-5.6 IS USM

01/03/2003 04:14:27 AM · #7

hey Azrifel, thanks for that link. Now I know what that is. I think that is what it may be. I was using a Sigma 70-300mm AF lens at about 4 to 5.6 I believe. I had gotten a 28-80mm and the 70-300mm lens in a pack for $229. So if I went up to one of the way expensive Nikkor lens' I shouldn't have that happen like that? If that is the case, I can live with that till I can afford some better lens'.

ClubJuggle

Canon EOS-400D Rebel XTi

01/03/2003 08:40:06 AM · #8

I'm not really seeing the blue cast in those two shots; that is, if the first one was taken with the sky as background.

The first one, I don't think I'd be able to see it anyway since the sky is predominantly blue. In the second, the water looks blue but the white on the duck looks truly white to me. I think the blue cast on the water is nothing more than a reflection of the sky.

If you have other shots that show the problem, could you please post them? I helped a friend with the same problem that I think you are trying to describe, and might be able to help.

Thanks,
Terry

jmsetzler

Sony Alpha a6000

Sony 16-50mm f/3.5-5.6 E-mount

01/03/2003 09:20:53 AM · #9

I can only see what you are talking about in the berries photo... I can't see it in the photo of the wood duck... I don't know what may be causing that... it could be from a polarizing filter on your lens maybe... polarizers tend to overenhance blues sometimes...

Konador

Canon EOS-500D Rebel T1i

Canon EF-S 18-55mm f/3.5-5.6 IS

01/03/2003 09:28:47 AM · #10

In the duck there is a blue repeat of the white pattern above the white, but I'm not sure if that is actually part of the duck or not :)

01/03/2003 09:38:49 AM · #11

The Nikkors have certain degrees of quality as well. The more expensive glass has lens elements that are made with less tolerance and are sharper / able to bring better detail to the censor / film. They also have corrective elements that are designed to iron out any chromatic abberation (as described at dpreview).
Before you buy expensive lenses, be sure to investigate what each item does and what quality they have and what they are worth in the real world as well as for your goals. It is an easy mistake to pay to much for a simple item at a not so reputable shop or to pay big bucks for something you don't even need.

I even have it with my own glasses (four eyes yes). Each glass in my glasses is almost just as expensive as your Sigma pack. But man, they are good! :-))))) (lightweight, durable, multicoated, special coatings, extra thin, the whole lot) But perhaps a much cheaper heavyweight is just as good. But both are better as the wholesale optical 2 for the price of one including sun shades stuff. :-)

Canon EF 28-135mm f/3.5-5.6 IS USM

01/03/2003 09:46:48 AM · #12

Originally posted by jmsetzler:

I can only see what you are talking about in the berries photo... I can't see it in the photo of the wood duck... I don't know what may be causing that...

Is it wood!? :-)
There are some white stripes above the big goldbrown pack of feathers, look like banana's. Around each stripe is a small purple halo, almost invisible at this picture size. It almost overblows the black above.

The berries have it on all edges at the left side. That's CA/Blooming.

ClubJuggle

Canon EOS-400D Rebel XTi

01/03/2003 12:08:26 PM · #13

That does sound like chromatic aberration then.

-Terry

jimmythefish

Canon EOS-10D

Canon EF 17-40mm f/4.0L USM

01/03/2003 12:58:15 PM · #14

Originally posted by Azrifel:

Originally posted by jimmythefish:
Can you provide an example? It could be white balance, or it could be what's referred to as 'chromatic abberation' or 'fringing' which is typically a magenta halo effect around overexposed areas of an image. My camera has a fairly bad case of it sometimes. Your D100 shouldn't really be doing this to any extent...giving us an example might help.

I am not sure anymore, but I believe to have read that one reason for chromatic abberations is the lens you use. Searching.......

//www.dpreview.com/learn/Glossary/Optical/Chromatic_Aberrations_01.htm

So a D100 could be doing it because of a bad lens.
My P1 with its cheap lens has a lot of CA and blooming. The 602 with is more expensive lens with aspherical elements has very little.
I think that it is most likely at wideangle and when the aperture is in the open range F1.4-F3.6.

Yes, of course, the lens could be it! Tired when I was writing. My thinking was more that it definitely can be prevented with an SLR...

Message edited by author 2003-01-03 12:58:45.