Fujifilm recently launched a handy online tool for people ready to shop for Fujinon lenses. The site is called fujifilmxmount. You can test the whole range of lenses and see how different lenses and aperture values affect the image. Here is how it works:

1. Choose a lens
2. Choose aperture value (and zoom if available)
3. Click the “Take Photo” button

thanks to the anonymous FR-reader for the link