I did a few searches on this topic but could not find a direct comparison between the two (honest).
I have a few important concerts coming up and I am considering the Canon 70-200 f/2.8 IS USM. Can someone explain the difference between the first and second generation (or point me to a thread I could not find). I can get the first generation for about $1800 brand new and the second is closer to $2500. $1800 is pushing my budget a lot as this would be an investment for jobs I have not gotten paid for yet. With that said if there is a significant difference between the two I would rather spend the money now and get the best option if it is in fact that much difference.
Thanks in advance.