Boris, I agree with you 100% (as a Padawan must, right?). Just, the Louvre is a very public place, and making those shots already took a lot of time, waiting for as clean a situation as possible. From then on, the choice becomes: to take a less-than-perfect shot, or no shot at all. Next time, I will go there and do it over again, but this time with no compromises. The one that is worth it IMHO is the third one from the first set, which could be really great. I probably have to use my 21 and then crop to get a better composition, and wait however long it takes for a clean shot.