Sunday 20 October 2013

Review Digital Camera World 10-20-2013

Digital Camera World
 
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DSLR focusing features explained: your camera's options and how to use them
Oct 19th 2013, 23:01, by jmeyer

There are a number of typical DSLR focusing features that can make all the difference between a pin-sharp image and a blurry mess.

In this cheat sheet we illustrate where to find these focusing features on your DSLR – and what they do.

To view the larger version of our cheat sheet simply click on the graphic below or drag and drop it to your desktop.

DSLR focusing features explained: your camera's options and how to use them

How to configure your autofocus

How to configure your autofocus: step 1

Set the focusing mode
Use the sliding switch on the lens to set autofocus (AF) or manual focus (MF). Some lenses include a focus limiter, which enables you to restrict the distance the lens focuses over, increasing the speed at which the AF system finds the target.

 

How to configure your autofocus: step 2

Choose the AF mode
Next you need to choose the AF mode. Use One-Shot AF for stationary subjects and AI Servo AF for moving ones. Intelligent mode is where the camera automatically shifts from One Shot to AI Servo, if it senses movement in the frame.

 

How to configure your autofocus: step 3

Pick the AF point(s)
At one end of the scale, you can activate all the AF points and leave it up to the camera to decide where to focus. At the other end of the scale, you can activate a single AF point and choose precisely where the camera focuses.

Smartphone photography tips: how a Nokia Lumia 1020 produced a spread in National Geographic
Oct 19th 2013, 11:00, by jmeyer

Smartphone photography is growing in popularity. The trend started with the iPhone, which quickly became the most popular camera on Flickr, and has grown steadily with the launch of more powerful smartphone cameras, such as the Nokia Lumia 1020 and its 41-megapixel sensor.

Smartphone photography tips: how a Nokia Lumia 1020 produced a spread in National Geographic

All images Stephen Alvarez

Stephen Alvarez is an award-winning photojournalist, travel photographer and filmmaker who has been working for National Geographic magazine since 1995.

Recently National Geographic teamed up with mobile phone maker Nokia to send Alvarez on a trek across the American West, covering thousands of miles, with the new Nokia Lumia 1020 smartphone camera.

Below he shares his best smartphone photography tips and recounts his experience using a smartphone to produce a photo essay for National Geographic.

Smartphone photography tips: Stephen Alvarez

DC: You've used professional cameras your whole career. Can you tell us what it was like using a smartphone.

SA: The Lumia 1020 is surprisingly DLSR like in its results. I shot a 3 page gatefold ad in the October issue of National Geographic magazine with the phone. That fact still astounds me!  You can use the phone in total automatic mode and get great results or you can do what I did and use the Nokia Pro Cam app to get great control over the image.

You've travelled far and wide; what new techniques did you learn while using a smartphone on your assignment in the American West?

It strikes me that I did not have to learn anything new to use the camera. The interface is extremely intuitive and easy to use. Results of settings changes appear live on the back of the camera before you take the photo so you can see what you are getting.

Smartphone photography tips: Stephen Alvarez

How does the Lumia 1020′s 41-megapixel sensor compare to using a DLSR?

The Lumia 1020 gives me a significantly bigger file than my standard DLSR, and the video is on par with DSLR quality.

What advice would you give a photographer wanting to compose landscape images on a smartphone?

Most smartphones – including the 1020 – have pretty wide lenses, so when you are shooting a landscape look for something to put in your foreground to anchor your frame. I found that the Lumia 1020 provides so much resolution that you can actually zoom into your frame a long way without a loss in quality.

Smartphone photography tips: Stephen Alvarez

What are some of they key techniques to remember when moving from DSLR to smartphone photography?

First thing to consider is where you are in relation to your subject. Do you need to get closer or further away? Sometimes by moving just a few inches you can make a much better photograph. What does the background look like? If it is distracting try moving so that you have a cleaner one.

In general I shoot with exposure compensation set to -.03 or -.07 in my smartphone photography. Bringing the exposure down just a little increases colour saturation and keeps from having hot spots.

Smartphone photography tips: Stephen Alvarez

If I am outside I will set the white balance to daylight, inside I almost always keep it on auto.

The manual focus control is great for close up photos; set on manual, the camera will focus within a couple inches of the lens. If I am shooting a landscape where everything is far away –or an aerial- I will turn the focus to infinity.

Smartphone photography tips: Stephen Alvarez

Flash works really well in that 3-8 foot range where we shoot most of our photos of our friends. But unless I am shooting photos of people inside, I keep it turned off.

Smartphone photography tips: Stephen Alvarez

While internal stabilizers work well at really slow speeds, whenever I can I brace the camera against something solid like a tree or table to ensure the sharpest images possible.

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