Hi, How good is Canon EF 70-200mm f/2.8LUSM when it comes to weather resistance.?

Question

I have recently purchased a Canon EF 70-200mm f/2.8LUSM after much consideration and reading a lot of reviews on internet. I had discovered that it is one of the Canon's most acclaimed lens and went for it.
Today I discovered that it's not Weather Resistant , but the IS version of the lens is weather resistant.
Now my question from those who have used it or have experience with Canon non-weather proof lenses is, how much can we rely on this lens when it comes to taking pictures in moist conditions, in moderately dusty conditions etc ?

Any help from people having used this lens would be much appreciated. I have invested quite some bucks and getting worried if it was a worthy investment.

Thanks in advance.

Answer 1

Canon's weather sealing works pretty well, but sealing the lens only makes sense if the body is also sealed. Judging by one of your previous questions, you use a 400D... which is not sealed.
If you're not worried about dust / water getting into the body, don't worry about the 70-200 either. If you are worried, spending another $500 for the IS upgrade won't cut it. It that case, I suggest you take weather sealing to the next level and get an Aquatech cover for $80 that will protect the lens AND the body. Yeah, you'll draw attention, but it's not like you're invisible with that white 70-200 anyway ;-)
Have a look at: http://www.aquatech.com.au/waterhousings.htm