Seeking advice on the round circles in the middle of the photos

[alfie]

Interesting information on UV filters ! Will clear filters have the same issue ?

 

[kiattan]

Mine is clear filter

Interesting information on UV filters ! Will clear filters have the same issue ?

 

[kiattan]

My mistake is for the rest of community to learn. Hahaha. Not many chances to take northern light photos!

Nice shots nevertheless bro!

One day you'll look back and know how this experience has helped to improve your photography in some way. hahaha. Everyone learns from their past mistakes.

Hope I get some luck to see them in the future

 

[Angus Siew]

My mistake is for the rest of community to learn. Hahaha. Not many chances to take northern light photos!

Hahaha. Unfortunately, yes. I'll be heading to south NZ next year. Hope i do get the luck!

 

[kiattan]

Good luck! Its even more unpredictable at southern parts of earth

http://youngadventuress.com/2015/03/aurora-new-zealand.html

 

[J-Chan]

Interesting information on UV filters ! Will clear filters have the same issue ?

I think so, this appears to related to Newton's rings type of interference pattern. I would think front element design plays a part if it is very close to the filter glass and very slightly spherical.