Forum Members, I am considering a new lens. Since I don't have access to trying the lens out before I buy it (it's a pricey canon lens and the local camera shops don't stock it) I am trying to compare what it will "frame" like using my existing lens. The specifications for the lens state the minimum focusing distance is 18.84 inches. How do I measure this? Is that 18.84 inches from the digital sensor inside the camera body or is that 18.84 inches from the end of the lens (the external glass of the lens)? This makes a difference because I want to make sure that I can fill the frame with this lens before I decide it's a good purchase. Given the above information I can make an informed decision as to how the lens will "frame". Any help is greatly appreciated. Thanks.