Friday, May 8, 2015

How to take sharp smartphone photos

With a few simple tips, sharp photos from your smartphone are within easy reach.


Struggling to get your smartphone photos looking sharp?
Here are a few ways to ensure your mobile photography is crisp rather than mushy.
Many of these principles also apply to photos taken with conventional cameras, so don't feel left out if mobile photography isn't your thing.

Hold it steady

Motion blur can make photos look soft. The first step to ensure sharp photos is to have a stabilization system for the handset.
There are several tripods on the market designed specifically for smartphones. Otherwise, if they are too cumbersome for point-and-shoot moments, try using both hands to firmly grip the camera before taking the shot. Holding a deep breath before taking a photo can also reduce any shakiness.
smartphone-tripod-joby.jpg
Mini tripods designed for phones include the Joby GripTight.Lexy Savvides/CNET
Camera shake can also occur when you touch the screen to take a photo. To reduce the possibility of movement, use your phone's self-timer mode.
Some handsets also have physical buttons that can be used to take the photos rather than pressing an on-screen icon. Even headphones can be used to trigger the camera shutter without needing to touch the screen.
s5-is.jpg
Screenshot by Lexy Savvides/CNET
The next option is to use a handset that includes image stabilization. Some phones that include optical image stabilization include the Apple iPhone 6 Plus, Samsung Galaxy Note 4, Nexus 6 and Lumia 930.
Otherwise, digital/electronic image stabilization is either available through the native camera app or third-party apps. OnAndroid handsets, look through the settings menu and see if there is an anti-shake option like on the Galaxy S5 (right).
For iOS, ProCamera has an anti-shake feature included, while Android users can try Camera FV-5.

Clean the lens

Have you cleaned your lens lately? It might need a bit of attention if your phone has come into contact with sticky fingers or rolled around in a pocket all day.
clean-smartphone-lens.jpg
Lexy Savvides/CNET
Smudges and residue left on the lens can act a bit like petroleum jelly: images look soft, smeary and out of focus. Bring back clarity by gently wiping the lens with a soft cloth. Ideally, use one that is designed for cleaning lenses or glasses.

Get the focus right

Sometimes a lack of sharpness comes down to the subject being out of focus. Most smartphones let you tap directly on the screen to choose where you want to set the point of focus, avoiding autofocus (AF) mishaps.
Using a feature called AF lock can also help keep focus exactly where you want it to be, even if you recompose the frame.
iphone6-af-lock.jpg
Press and hold on the screen to bring up AE/AF Lock on the iPhone.Screenshot by Lexy Savvides/CNET
On the iPhone, press and hold the focus square over the desired point. The square will flash, and an AE/AF lock option should appear at the base of the frame, showing that the exposure and focus have been locked. To change or remove the lock, just tap again on the screen.
Some Android devices will need a dedicated app to help lock focus. One such app is Camera FV-5 in either the lite or paid versions. Focus lock is called AF-L in this particular app.

Look for the light

Shooting in ample light will generally deliver better results than low light. Unlike their point-and-shoot companions, phone cameras have a fixed aperture lens. To alter the exposure, the phone has to adjust shutter speed and ISO rather than aperture.
smartphone-photo-burano.jpg
With plenty of light to work with, getting a sharp shot is easy.Lexy Savvides/CNET
To get the correct exposure in lower light, the phone camera has to hold the shutter open for a longer period of time, thereby increasing the chance of blur, shake and noise.
Also, avoid using digital zoom where possible as this can make photos look very soft and mushy.

Sharpen with apps

Even with meticulous technique, some photos still need a little help. In this case, try editing photos using an app, or importing them into a program like Photoshop to get them up to scratch.
sharpen-smartphone-image.jpg
Lexy Savvides/CNET
Many third-party apps such as Snapseed (free for iOS and Android) have an option to apply a sharpening effect to photos during processing. Make sure to inspect the image at full resolution periodically, as over-sharpening can look very obvious.

How to make your own custom bokeh

Learn how to turn out of focus areas in photos into fun custom shapes.


custom-bokeh-cap.jpg
Lexy Savvides/CNET
Bokeh is a word to describe the quality and appearance of the out of focus areas in a photograph.
In this tutorial I'll show you how to change the shape of the bokeh in your photographs by making a lens cap.
There are several custom bokeh options you can buy ready made, and there's even a Lensbaby kit. But where's the fun in buying when you can DIY?

What you need:

  • Digital SLR and lens (ideally with a wide maximum aperture such as f/1.8)
  • Black cardboard
  • X-acto or safety knife
  • Black duct tape
Step one: Cut a long strip of black cardboard that will fit around your lens. Tape it together to form a cylinder that sits snugly around the lens barrel.
Step two: Trace the outline of your lens on another piece of black cardboard. Draw a slightly larger circle (about 0.5-inch) around this.
custom-bokeh-trace.jpg
Lexy Savvides/CNET
Step three: In the centre of the smallest circle, draw a shape for your custom bokeh. It can be a heart, spiral, lightning bolt or whatever else you please.
Cut out this shape carefully using the blade. You can also use a shaped hole punch to get a cleaner look. Repeat steps two and three as many times as you like to create different shapes.
Step four: Cut around the larger circle to remove it from the surrounding cardboard. Then, cut in from the larger circle to the inner circle to create tabs.
custom-bokeh-cut.jpg
Cut from the big circle into the smaller circle to create tabs.Lexy Savvides/CNET
Fold the tabs back. Use tape to gently fold and stick the tabs to the outside of the cylinder you made in step one. Make sure to use enough tape to prevent light leaks.
Step five: Once the cover is complete, all that's left to do is take some fun photographs! Find a situation where there are multiple light sources. Night cityscapes work well, otherwise you can grab some Christmas lights and photograph those.
bokeh-example-1.jpg
This shot was taken with Christmas lights hanging in the background and a small light on the subject in the foreground in an otherwise dark room. Exposure: 1/50, f/1.8, ISO 800Lexy Savvides/CNET
In aperture priority mode or manual mode, open up your aperture to the maximum value your lens accommodates. This is a small f/ number. For example, a 50mm lens may have a maximum aperture of f/1.8 which you will want to use to let in the most light.
Set your focus on a foreground subject without the bokeh hood on the lens. Then, place the hood on the lens and adjust your exposure accordingly.

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