Holy moly, I just looked at Canon's equivalent of that lens (
http://tinyurl.com/bqoypv7) and yes sir, you are right, they are expensive!!! I'd like to get some better lenses than I currently have but right now, I'm trying to figure out how I can convince my wife to let me buy a fish finder unit for the console of my boat and yep, you guessed it, I'm looking at one of the new Lowrance touch screen units, probably the 9 inch and with the LSS-2 transducer, we're talking at least $2700. I was going to get the 7 inch but everyone is telling me I'll regret paying the money for such a small screen near the console. LOL, I'll probably end up getting one of the older models because that's a lot of cash to fork over.
A fishing/photography trip sounds great, we'll have to set something up!