The combination of the full frame sensor and 17mm focal length have allowed an enormous field of view to be captured, while the L optics have delivered sharp results with only slight softening in the extreme corners.

Some vignetting is visible in the corners. Note a polarising filter was used in this shot.

While the 24-105mm L is a great general purpose lens for the 5D, it’s the 17-40 L which really shows off the potential of the full-frame sensor.

Once again, the crops are detailed and softening only apparent at the extreme corners. A polariser was also used for this shot.

This shot was taken at Oldervik, a short drive from Tromsø in Northern Norway.

We used the 24-105mm f4.0L lens at 24mm and closed the aperture to f20 to ensure a very large depth-of-field.

The light levels were already very low, so with an ISO of 100 the exposure was 4 seconds.

The crops show a high level of detail with little distortion or softening.

It was taken in Utah’s Bryce Canyon National Park using the 70-300 IS USM lens at 100mm. The aperture was set wide open to minimise the depth-of-field.

This lens may not feature the ultimate build and optical quality of an L model, but the crops are sharp and there’s a pleasing bokeh. Look out for a full test of this lens soon.

This image of the Aurora Borealis (Northern Lights) was taken from Ersfjord on Kvaløya, again a short drive from Tromsø in Northern Norway.

We used the 35mm f1.4L lens at f2.0. The 15 second exposure was sufficient to capture the Aurora at 400 ISO.The crops show very low noise levels, although the exposure has resulted in slight star trails. Note the Andromeda galaxy M31 is visible in the lowest crop.

Many thanks to our good friend Kjetil Skogli for his invaluable advice on photographing the Aurora.

There’s inevitably some noise, but considering the high setting of 3200 ISO, it’s an impressive performance from the 5D.

Once again, the exposure time has resulted in some star trails, and again, the M31 galaxy is visible in the middle crop.