Hi
Need help
After shooting some long exposures, I found that some had a 'ring' of spots on them. These were taken on a 17-55mm lens at 55mm. I have since tested a 55-250 lens and found the same problem.
What is it??
Thanks
PS How do you get permission to add attachments?
Need help
After shooting some long exposures, I found that some had a 'ring' of spots on them. These were taken on a 17-55mm lens at 55mm. I have since tested a 55-250 lens and found the same problem.
What is it??
Thanks
PS How do you get permission to add attachments?