John


I would be very appreciative if you would do that.


The two lens I see that would be a good comparison would of course be the 100-400mm L


or


The 100mm F2.8L Macro. The prime might give more accurate results than a zoom for the comparison, but it would have be at a F stop narrow enough to get rid of the vignetting this lens has on full frame when wide open and it would need to be some farther distance from the camera (not macro).


Thanks for the offer.


I have a feeling I am getting ready to spend $1600


Rick