Secondhand Superstar

I’m keen to try a fisheye lens on my D5200. Which one would you recommend as a secondhand buy? Matt Davidson, via email

Jason says... Nikon makes an AF DX 10.5mm f/2.8G ED fisheye lens, but it won’t autofocus on camera bodies like yours that lack an internal AF motor. A better solution is either Sigma’s 4.5mm circular fisheye lens, or the Sigma 10mm diagonal fisheye lens. I prefer the latter.