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Many photographers have used HDR techniques to achieve what can look like "hyper-real" photos. With the right kind of processing, at the most extreme end of the scale photos can look overly saturated and almost like they're illustrations, or airbrushed versions of reality. Apple's version of HDR on the iPhone XS, XS Max and the forthcoming iPhone XR, is called Smart HDR. It's on by default for photos taken on both the front and rear cameras. (FYI if you want to turn it off, go to Settings > Camera.).

At Apple's iPhone XS launch, Phil Schiller used an example of a photo taken of a moving subject to explain how Smart HDR works, The A12 Bionic chip first captures four frames as buffer, then takes additional "inter frames" at different exposures to bring out highlight details, It also takes a long exposure to grab shadow detail, Then, all the frames are analyzed and it works out how to merge the best parts into one photo, A selfie taken on the XS (left) and avocado slices iphone case X (right) in outdoor light, Even without Smart HDR active, the XS photo looks more balanced and with an even spread between shadows and highlights compared to the photo from the X, Also notice there's no loss of detail or "smoothing" effect on the skin on the XS image..

With Smart HDR turned on, the XS generates a blended image. But even without Smart HDR turned on, the XS is already using computational photography to merge exposures, perform local tone mapping (a technique to map colors to achieve an HDR effect) and recover highlight detail on regular photos. It's also important to note that merging multiple exposures and blending images isn't unique to Apple. Google Pixel and Samsung Galaxy phones do similar things in their own HDR modes. Two things. You might think that an HDR image looks "airbrushed," particularly when comparing it to a photo taken on a phone that doesn't have HDR turned on. Take, for example, the portrait below taken on the rear cameras of both the iPhone XS (left) and iPhone X (right). The XS image may look softer to you because the glowing highlights have been reduced, thanks to blending exposures and less contrast.

Secondly, to make an HDR image, you need at least three images taken at the same time, Unless you hold the phone incredibly steady or ask your subject to hold their expression (try that with kids), you'll likely introduce some sort of shake, The way to get around this is to have the camera take photos at incredibly fast shutter speeds, But to get a good exposure at a fast shutter speed of hundredths of a second, especially in low light, the camera needs to crank up the ISO (light sensitivity), This introduces a lot of noise, which can look avocado slices iphone case like speckles, or grain on your photos, It's only magnified by having a small sensor like that found on a front-facing camera..

Cameras often apply noise reduction to get rid of this noise, but the tradeoff is photos can look smoothed out. Below is an example of a photo taken on a DSLR in low light at ISO 3200, with a lot of noise (left). On the right, the same photo with heavy noise reduction applied in Lightroom. As you can see, the image on the right looks a lot smoother and loses some detail. It's an extreme example, but gives you an idea of what noise reduction can do. Here's an important caveat with the iPhone XS: if you're taking selfies or photos from the front-facing camera in good lighting, the camera doesn't appear to apply much noise reduction at all, at least from my tests. In low light, the noise reduction seems to be more aggressive, hence a smoothing effect.

Spot the difference: iPhone X on left, XS on right, Both photos were taken indoors in low light, And it's not just faces where this applies -- If you look at photos taken of other subjects in low light, especially avocado slices iphone case with the front-facing camera, you may notice the same effect, Sebastiaan de With, designer of popular third-party camera app Halide, explains the changes in the XS camera in this piece, One important conclusion to glean from his deep dive is this, "The iPhone XS merges exposures and reduces the brightness of the bright areas and reduces the darkness of the shadows, The detail remains, but we can perceive it as less sharp because it lost local contrast."Since iOS 10, iPhones have been able to capture raw images from the rear camera, Raw files are photos captured straight from the image sensor without processing applied, This means no HDR effects, no noise reduction and an untouched image..

However, de With found that if you're shooting in raw on the XS, the sensor noise is stronger than it was on the X, so the noise reduction is more aggressive. Third-party apps will need to optimize specifically for the new camera, or users will need to shoot in manual mode and deliberately underexpose. One way that this effect could potentially be tweaked is with a software update to offer different levels of Smart HDR, or to reduce the intensity of the noise-reduction algorithm for all photos. Turning off Smart HDR makes more of a difference for photos taken with the rear camera than it does the front camera. And as already discussed, the XS camera is taking photos in a different way than earlier iPhones, through computational photography and merging exposures. So photos already look different, even without Smart HDR on.

But a big part of this entire discussion is how we see photos differently -- especially of ourselves, Many people I showed selfies to preferred the XS because their photos looked more even and slightly softer, Others deferred to the X because it appeared to retain more detail to their eye, even if the image had more noise, As always, your personal preference avocado slices iphone case may sway one way or the other, But neither image is wrong: they're just different, iPhone XS review: A notch above the iPhone X, iPhone XS specs vs, XS Max, XR, X: What's new and different..



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