When considering the purchase of a new lens, it is often helpful to look at your previous images and find out which cameras, focal lengths, apertures and ISO settings have been utilized most often when capturing your images.
PixStics is an online EXIF analyzer that utilizes HTML5 (available in Mozilla Firefox / Google Chrome browsers) to gather information about your images and display the results in a statistical based graph. It can be a valuable tool in spotting trends in your own shooting style and providing valuable information when determining how useful a new lens will be.
From the PixStics website:
PixStics is designed to answer most of the commons questions you may have about what camera settings and equipment you use the most and how that relates to buying new gear or improving your technique. It does this by providing a statistical based graph comparing any combination of one or two properties from the list provided.
PixStics makes use of HTML5 methods that are not available in all browsers. Both Chrome and Firefox support these methods and IE 10 will work once it's released as well. If the JPEG you select doesn't contain any EXIF data it will be skipped. If none of the files contain valid data then you won't get any valid results.