Place and fix an A4 sheet of paper on the floor against a straight wall that ends flush with the floor. Wear your usual skating socks for more accuracy and place your foot on the sheet with your heel touching the wall (make sure your heel touches the wall without significant pressure.)

This is neither a long-distance runner or a sprinter. The lens makes a dash from the minimum shooting distance to infinity, and back again repeatedly. There are three requirements. It must be fast, quiet and maintain balance across its zooming range and at any shooting distance, so as not to have any impact on your grip holding the lens. The balanced form eliminates camera shake for high-speed shooting.

Large-diameter zooms are typically very heavy, limiting where you can use the lens and what pictures you can take, however this lens weighs less than 1kg. After a day of shooting with the lens, when you head home and realise that there is no strain on your shoulders or arms, that is the moment you appreciate its true value.

If I had to pick one lens to carry on a trip, I will always pick the 50-140mm. It allows me to do 90% of my work. It’s perfect for in and out of the water: for portraits, action, landscapes. A general lens that does a great job.

A photographer on the move needs to control things quickly and easily. The zoom determines how big or large the subject is in the frame, image stabilization helps reduce shutter speeds and minimise any vibration whilst the large maximum aperture gives rich bokeh and high-speed AF keeps up with any movement. This lens allows the photographer to control all the four elements with their left hand, leaving no room for uncertainty. This workhorse of a lens brings out the maximum potential of the camera and the photographer.

I usually shoot with a fully-open, 2.8 aperture, and not all lenses can perform so well. It’s a zoom, but it works just as perfectly as a prime lens. For me, a sports photographer working in difficult weather conditions with lots of dust and high humidity, using one lens instead of frequently changing a number of lenses, means better care of the camera, and preventing the sensor from getting dirty.

For the best performance, inline skates should have a snug fit. It's not necessary to buy inline skates one size larger than your foot size; as they break in, all inline skates will expand and widen over time. It's important to know that soft boots will expand more than hybrid or carbon boots.3 EASY STEPS TO MEASURE YOUR FEET:

Stand relaxed on the foot you are measuring and draw a line around the outline of your foot starting at the big toe. Be sure to hold the pencil vertically to prevent any deviation. It's ideal to have a friend draw the line for better accuracy. Measure the length of the paper to the line: that's your MONDOPOINT size.TIP: For the best fit, measure your foot after a short skating session or at the end of the day as your foot will naturally swell and expand.

Designed for clarity and strong contrast, this lens captures every detail in each scene. The Nano GI (Gradient Index) coating reduces ghosting and lens flair when shooting into strong light. The use of six ED lens elements including one Super ED (extra-low dispersion) lens minimises chromatic aberration to achieve a high level of image resolving power. The lens configuration and coating, has been applied to deliver clarity, free of dullness or haziness, allowing the photographer to capture what their eyes see.

Do the same for the other foot and compare measurements. The correct size will be the length of the longer foot:Precision fit add 2-3mm.Comfort fit add 4-6mm.Now, with these measurements, you can take the correct size from our sizing charts.

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50-140mm is one of the most versatile lenses that I have ever tried in my life. What I like most is its “sharpness”. I usually shoot in both jpeg and RAW, but the jpeg set in “FINE” quality is absolutely impressive. It is stunning.

The lens has five-stop image stabilisation inside, and can deliver up to six-stops*1 when mounted on a camera with in-body image stabilisation. At the longest end of the zoom, 140mm, the slowest shutter speed when hand-holding should be 1/125 sec to avoid camera shake. The OIS allows you to use a shutter speed of 1/4 sec! Concentrate on your subject and have the creative freedom to choose a wider range of shutter speeds. You can also benefit in low light, as you don't have to increase ISO sensitivity or rely on a tripod.

Any professional lens needs to overcome all shooting conditions, especially adverse weather. The dust- and moisture-resistant construction of the lens allows you to immerse yourself in shooting, even during rain or sandy environments.*2