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Hey Bob,


Since, you pretty much have the entire Zoom Range covered from 10mm-400mm. I think you're definitely on the right track with a nice Fast, Sharp, Prime Lens, and the Canon 100mm f/2.8L Macro IS definitely fits that bill.


It has plenty of speed for outdoor use and it's tack sharp. This Lens looks like it was made for the 7D, it's also pretty light and easy to handle. It provides 160mm on the 1.6 crop body, which is the perfect length. I agree with Ben, the 180mm is slower, doesn't have IS, and in my opinion is a bit too long for a crop body (288mm), Macro Lens and it's probably better suited for a FF body.


The 100mm Macro also has a 67mm front element, which translates to, "Some of your other filters won't fit."


The day you buy this Lens, is the day that it will become the sharpest Lens that you own so far. This lens will also double as a nice telephoto portrait lens on the 7D.


Here's a sample taken in low light, and in the shade around 6pm Handheld.


7D, EF-100mm f/2.8L IS Macro, 100mm @ f/10, 1/160sec. 0ev, ISO 2000 (Not Cropped)


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Rich