Lens Review:: Sigma 10mm F2.8 EX DC Fisheye

I've had the Sigma 10mm F2.8 EX DC Fisheye lens in my kit for a while now and although you can't use it all the time, it's a great little lens in a lot of situations. From architecture to portraits (see my Rules Are Made To Be Broken blog post) and everything in-between. With a fast wide aperture of F2.8, it's a great lens for low light situations.

The 10mm Fisheye is designed for APS-C size sensor cameras. The Nikon version produces a diagonal angle of view of 180o (154o on Sigma and 167o on Canon) and a minimum focus distance of 13.5cm/5.3 inches. The lens is predictably soft at the edges between 2.8 and 3.5, but at F4 and beyond it performs much better than expected. The centre of the lens is pin sharp and the bokeh when shooting wide open is fantastic.

You can pick one of these lens's up on Ebay secondhand for around £300, and it really is worth it.

Sigma 17-70mm f2.8-f4.5

I bought the Sigma 17-70mm f/2.8-f/4.5 about six months ago when I was planning on buying a spare Nikon body as a back-up. I had a similar size Nikkor lens, but I wanted to keep that in my main camera bag. I bought the Sigma because it was an f/2.8 at the wide end. I payed £128 second-hand from eBay and didn't expect much. Six months on and I'm using this lens more than any other. The 17-70mm is one of the sharpest lens's I have used and it's not even one of Sigma,s high-end EX range (I have a new Sigma 10-20mm EX now too). If my gear got stolen tomorrow, this is the first lens I would buy again. The only downside is that it's not a fixed f/2.8 aperture.

I had a shoot last week for an album cover by Italian guitarist Will Barbero and the 17-70mm was the lens I used for 90% of the job (Nikkor 50mm f/1.8 made up the other 10%). The photo of Will bellow was taken by the Sigma and has been reduced from a 9.35mb raw file to a 43.3kb 640x425 blogable image. Taken at 40mm, f/5.6, 60th sec, 200 ISO on a Nikon D300 on manual.