Because I actually get a lot of interest to my blog for my last lens review, I want to do another and I've not seen a lot of head to head reviews concerning Sigma's new 24-70mm HSM lens vs its actual Canon opposite. I'm beginning to write the review and this time I would like people if they are interested, in telling me they might want to see in such a review. I also have a Canon 24mm L prime thrown into the mix so I hope it will be quite exhaustive. I don't have any advertising on my site so this isn't an attempt to get a lot of hits, I'm doing this purely for the love of being a gear head plus I have lots of time coming up next week. Thanks.