This post will probably make me look like a stats geek or like I have major OCD, but I swear it's just garden variety curiosity :tongue: I've been looking at different lenses and trying to decide what ones are actually likely to be more useful to me. It finally occurred to me that it might be of help to know what my previous shooting habits have been. I couldn't find a plugin or app for OS X that would give me a distribution of recorded focal lengths from EXIF data, so I wrote a very quick and dirty script to do the analysis. The data isn't as meaningful as it could be, because I only had 2 lenses up until recently (20mm and the 14-42 Oly kit zoom), but it confirmed what I expected: I use the 14-42mm range on the zoom almost always at either 14mm or 42mm. That tells me that though I do use the zoom across the focal length, I'm most frequently wanting either as wide, or as tight in as I can get. In practical terms, this suggest to me that something like a 14-140mm might get a lot of use from me with the extra far end, and/or a 12-50mm which has a little extra at both ends of the spectrum. Particularly since I note that I've also taken quite a number of pics with my 12mm prime in the short time I've had it. What I'm really looking forward to is being able to do the same kind of analysis in the future after I've had more time to make use of a larger variety of lenses and see how the distribution looks. Anyone else ever do anything like this? I found a few blog posts online on similar topics and I found it very interesting. Note that I'm not trying to overthink things here - obviously you work with what you have and a good photo is about what's behind the camera more than anything. Nonetheless, I think it's kind of cool to be able to use EXIF data crunching to reveal a little about your shooting style. I'd love to hear from you all - what's your most commonly used focal lengths and why?