Canon 100-400 Ghosting problems

[John Chardine]

Roger- I remember now that the problem filter on the 100-400 was made by ProTama. I sent it right back for a refund so do not have the filter anymore but I think I kept the test images. If I have them I'll post or send.

This was a good lesson and now I only use Hoya or B+W pro-grade filters, but would not use any on the 100-400.