Over the year, I've ingested about 4500 photos into my Aperture library. I extracted the metadata using this tool and then plotted my most frequently used focal lengths into the attached bar chart. Over most of this time, I've owned this equipment: - Canon 7D - Canon EFS 10-22mm - Canon EFS 17-55mm - Canon EFS 60mm macro - Canon EF 70-300mm A few observations: - Nearly 25% of my pictures were taken at 17mm which is the wide end of my 17-55mm walk around lens. This makes me wonder if I'm settling for 17mm on a lot of these shots when I should be switching to my 10-22 for an even wider angle and just being lazy or this is an appropriate focal length for a lot of shots. I guess I should separate the overlap in the 10-22 and the 17-55 to see what that reveals. - Perhaps not surprisingly, other lens limits are popular focal length choices... for example 10mm, 55mm, 60mm, 70mm, and 300mm, which also makes me wonder if I'm often making do with what I've got to work with at the moment. - Outside of the lens limits, I seem to use a fairly even distribution of focal lengths. One of the reasons I did this was to evaluate if I might benefit from upgrading my 70-300mm lens which is perhaps the weakest lens in my kit to something like the 70-200 L or new 70-300 L. What this tells me is that 15% of my photos (or 683 out of 4500) are at 70mm+ and 200 are in the 200mm+ range meaning if I upgrade, the 70-300 is probably the better choice. Anyone else have any thoughts or observations on this?