Rings in center of high ISO northern lights photo

Magellan

Senior Member
Took some northern lights photos at ISO 6400 with D610. They turned out great except for some faint rings at the very center. Any ideas why these are
dsc_8046_rev1_small_382672.jpg
es, I can photoshop them out, but I would like to not have them in the first place, or at least know why they are there in the first place.

thank you
Magellan
 

hark

Administrator
Staff member
Super Mod
Contributor
I'm not sure what you're seeing either as I don't see any circles. Since you have such a bright light source in your image, it might have something to do with lens flare. That can happen when light bounces around inside your lens. The effect it creates can be different for every lens. Some lenses handle it better than others. With a few lenses, the light bouncing around causes haze to appear in the image.
 

Catherder

Senior Member
I see them, did you have a UV filter or other type of filter on the lens, perhaps condensation on the lens .If so that's probably the cause, those are newton rings. Light bouncing back and forth between the lens and a flat filter element usually causes those.
 
Last edited:

Magellan

Senior Member
Newton rings. I will have to take the UV filter off for the next outing. I have not even thought about the filter since installing it.
I blew the photo up to 20 X 30. They are still faint but much more noticeable at that size.
thank you
 

Magellan

Senior Member
Can’t really see them here but ISO 6400 may be a bit much for the D610


Sent from my iPhone using Tapatalk
hi Don
I am very curious about the ISO being too much for the camera because there are two settings even higher. Where can I go to learn more about this issue?
Thank you
 

480sparky

Senior Member
hi Don
I am very curious about the ISO being too much for the camera because there are two settings even higher. Where can I go to learn more about this issue?
Thank you

Just because a camera CAN go to a certain ISO doesn't mean it SHOULD (just like your cars' speedometer). Higher ISO = more digital noise and reduced detail.
 

Magellan

Senior Member
Just because a camera CAN go to a certain ISO doesn't mean it SHOULD (just like your cars' speedometer). Higher ISO = more digital noise and reduced detail.
Are you saying there is a balance between ISO settings and MP? I can see that, but I can also see it being a bit of a trial and error, or perhaps a decision concerning the level of digital noise you are willing to tolerate.
 

Magellan

Senior Member
Well, as far as I can tell this was Don's very last post. RIP, buddy.
I was wondering the same this morning when I saw the news. I was looking forward to getting to know him better. I caught the sense that he was one of those who held a well-spring of life experience and wisdom. Indeed, rest in peace, Don, and may we all remember that we truly are passing through.
 

BeegRhob

Senior Member
The last time he was on the site was Jan. 2019. Chances are that you will not get a reply.


Yeah, I saw that, thank you though! I was kinda hoping he got an email notification from it, and will pop back in. Looking for Alaskan friends with a common interest, you know?

Rob
 
Top