Just a month after leaving Antarctica, having spent a year overwintering, British doctor and Sigma photographer Doctor Alexander Kumar is back on the ice - this time on the other side.

Working as the expedition doctor and scientist with The Shackleton Epic expedition, led by British- Australian explorer Tim Jarvis.  A team of six will recreate Sir Ernest Shackleton's famous escape from Antarctica in a replica of the James Caird lifeboat, the Alexandra Shackleton, from Elephant Island to South Georgia before then crossing South Georgia.  The Epic crew will be wearing the same clothing, eating the same rations and enduring the same conditions as Sir Ernest's crew did.

Doctor Kumar, shown, will be observing and monitoring the crew during both the sea and land crossings.

Photographs are often taken for posterity reasons. The preservation of moments captured by the camera lens in these photographs is very much loved by all people for years to come. In fact, many families around the world have a camera or two in their household in order for them to take pictures of treasured times. There are also those people who take professional courses in photography and upon completing the course, sets up a professional studio to meet the needs of the society for really outstanding pictures.

If you just have a talent for taking extremely good photographs, and want to make a living out of it, you definitely can. There are several ways of making money with photography. It has even gone beyond the traditional freelancing opportunity that it was years back when the use of the Internet was still limited to a lucky few. Nowadays, people like you have found a good way in making money with photography online. Here are the three ways that you can earn money from the photographs you take.

Most people don't use Photoshop to its fullest capabilities. Here are just ten uses which you could put this highly versatile software to.

There are lots of ingredients to making a spectacular photograph, but the most important is for the picture to be in sharp focus. We all know that Sigma lenses offer top optical quality but there are ways to improve image sharpness even beyond the lens you use.

Photographers have somewhat varying opinions on what constitutes a tack sharp picture, but generally, a tack sharp photograph has good, clean lines. The picture has clear definition, instead of a soft blending of lines. There are several things you can do to increase your chances of getting that coveted tack sharp picture.

Our correspondent in the Southern Hemisphere, Dr Alexander Kumar, once again entrances and informs us with his experiences in Antarctica.

The Auroras are well-known, but for many people rarely seen. Aurora Australis is, of course, never seen by those of us in the Northern Hemisphere. 

Many beginners find digital photography rather challenging and rightly so. Today, more and more digital cameras are being created and it seems like the more digital cameras they make, the more difficult they become to use.

You may not want or even need a camera with tons of features. It really depends on the type of pictures you plan on taking.

Regardless of the camera you own or are planning to own, you should have a well-rounded knowledge of digital photography. Hopefully the following 20 tips for capturing digital images will prove to be useful in your quest for taking better photographs.

Dr. Alex Kumar has another update from his time in Antarctica - where the clear skies and prolonged winter darkness provide unprecedented opportunities for stargazing!

A fisheye is probably not the first lens that springs to mind for photographers wanting to take close-up pictures of flowers and insects. However, the Sigma 15mm fisheye is exactly the lens that pro photographer, Paul Harcourt Davies, uses for much of is wildlife photography. In this article, he explains just how he gets these high-impact shots with this ultra-wide lens.

If you are fresh to photography, do you ever wonder how to achieve a shot where the foreground is in focus while the background is blurred?

This technique is commonly known as Panning and can be achieved effortlessly with sufficient practice. An SLR camera is preferred for panning shots due to its low shutter lag.

Panning shots are commonly used in sports like motorbike racing, trekking and cycling. This technique allows the photographs to tell a story to the viewers. Viewers can easily appreciate that the subject of interest is in motion and thus making the photograph more attractive and complete, as compared to a frozen moment due to the result of a fast shutter speed.