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The update to the iPhone and iTunes on your computer using the USB cable. We've already taken the update for a test drive on our trusty to see what the new version has to offer.software, Apple iOS 4.1, arrived today, a mere week ago. To get the free update, simply connect your phone or iPod to
High dynamic range (HDR) photos
This feature helps to balance out the exposure of photos so that back-lit subjects, deep shadows and bright objects are all visible. It does this by taking three photos, each with various exposures, and sticking them together.
First, we tested the HDR feature by photographing supermodel Mary Lojkine against a brightly lit window. In the example below, the exposure of the outdoor scene was significantly better with HDR, showing far more detail. The model herself, however, remained underexposed.
In cases where our model was moving, the combination of photos didn't overlap perfectly. That meant blurry, overlaid images around the edges.
The iPhone's tap-to-focus feature is another handy way to control the exposure. Tap the area you want to focus on to ensure the camera takes its light reading from there. In our tests, tapping on the subject didn't improve the results of the HDR.
We tested landscape shots with photos taken from Blackfriars Bridge on a sunny day, but we weren't as impressed with HDR in this context. Images looked more exposed everywhere, rather than capturing detail in the sky and shadows of the pillar, as we'd hoped.
Overall, HDR is definitely a useful feature. We'll be using it for shots in bright sun when we don't have any control over the lighting conditions. Don't expect it to turn the iPhone into an SLR-killer, though. For a mobile phone, the iPhone 4's camera is better than most. If you don't like the HDR results, the phone saves both versions of the photo, so you can always stick with the original image if need be.