Re: The difference a lense protector makes.
Interesting comparison, Mark. What brand and quality of lens protector (I assume that it was a U.V. filter) were you using ? I purchased a Hoya U.V. Pro Digital when I got my Canon 100 - 400 thinking that it would be superior to the garden variety U.V. filters and, therefore, not result in much image degradation. Perhaps I'll run a similar comparison to determine whether I got value for money.
Thanks for posting this informative thread.
Life List : 481 (Southern Cassowary, Etty Bay, QLD, Oct., 2016)