@ebiggs1 wrote:I Appreciate your answer. It is so nice to have a cordial discussion for a change. People can disagree but still remain civil.
A debate made in good faith and with respect is at the heart of how we progress. I certainly respect your experience and would never intentionally undermine that.
I will always be willing to change my conclusions when the weight of factual material is compelling. I just need the referential material to do so. I like to base my opinions based on facts, not emotion or opinion - as a person who values those same things I respect your opinion, even if we differ in our conclusions. It is a sad comment on our society today that the scientific method has been replaced by bigotry and abuse in so many platforms. People say things on the web they would never consider doing if they had to face the person in real life - call it old fashioned but if we ever met in the real world I would like to do so without regret.
Also I find that a lot of disagreement comes downt to definitions and terms of reference. There is a big difference between lens specs and equivalence. I regret that initially I was so tired I forgot to make my term of reference clear in my first post, but I went back and made it clear that that was my intent and was corrected later. At least that got rid of that area of confusion! 
