Camera Video Recording

In terms of video recording, the iPhone XS promises an improved dynamic range in modes up to 30fps. What this likely means is that the phone’s able to capture in HDR mode in the 30fps modes, doing the same kind of processing we also see in SmartHDR still pictures.

Also something I’ve dreaded on iPhones for years; the new iPhone XS finally introduces stereo audio recording. Why it took Apple such a long time to finally introduce stereo recording is something that boggles the mind, but, let’s not complain, as we now finally have it on the new generation.


iPhone XS:      iPhone X: 

Comparing the iPhone XS video to the iPhone X, there’s one thing that is immediately very evident: the new XS is able to produce much better image stabilisation than last year’s flagship. Indeed, it looks like Apple vastly improved the OIS/EIS on the new phones, as the wobble that happens when walking is gone on the XS.

Audio recording finally is up to par, and we can hear the wind and rustling leaves of the trees around us. I think Apple might still have to work a bit on the wind noise cancellation, as in some parts the audio sounded as if it was inside a tube.

In terms of image quality, Apple’s claims of the improved dynamic range are very much verified. The phone showcases a lot more brought down highlights in the scene, and in darker areas, show better shadows. It’s unfortunate that this is limited only to the 30fps modes, but it’s understandable.

Switching over from the main lens to the telephoto lens happens relatively fast, although with a short exposure flash and a slight delay on the first zoom. 4K60 recording doesn’t allow for the use of the telephoto lens.

All in all, the video recording quality of the new iPhone XS is massively improved in all areas of stabilisation, picture quality, and audio. 4K30 recording on the XS is probably the best I’ve seen on any smartphone – a definitive applause to Apple for the improvements here.

Speaker Evaluation

Apple claimed to have improved the speaker audio quality on the new iPhone XS, allowing for more stereo separation and filling sound. I had introduced a new speaker evaluation method a few months ago because this year’s efforts by smartphone vendors to improve speaker quality has been very pronounced, and I wanted to have a way to objectively convey these improvements.

Starting off with speaker loudness, we’re measuring the phones at maximum volume, both in one-hand portrait mode, as well as two-handed mode where the palms are cupped towards the user. These two use-cases are what I find myself most often using the phone’s speakers in, so hopefully that also represents how most users use it as well, please let me know otherwise!

Speaker Loudness

Using a pink noise signal, the iPhone XS pretty much falls into line with the results of the iPhone X, coming in at a very loud 82.8dBA in portrait mode and 87.6dbA in two-handed mode. Apple’s sound directionality on the iPhone X and XS is among the best, most likely due to the fact that the stereo earpiece is among the loudest of current generation smartphones.

Measuring the frequency response of the speakers, we see the iPhone XS closely following the measurement of the iPhone X, however there’s a major difference in the mid-range where the XS is around 5dB louder, raising instrumental frequencies and voices. This difference is what I think Apple is referring to when talking about better “fullness”, as it is evident when playing back media.

To better demonstrate the difference between the phones, I’ve attempted to capture them with a binaural microphone setup. Now I know my environment isn’t perfect as I don’t have the necessary sound dampening equipment, but I hope it does serve as an overall adequate A/B comparison between the phones. I’ve tried to calibrate the sound as much as possible recorded by the setup to a flat frequency response, although I’m sure there are improvements to be made. As a comparison, I also included calibrated speakers as a baseline to get an idea of the microphone setup.

The audio is meant to be listened to with headphones, or even better with IEMs, as this will give the intended playback of the binaural recording.

The iPhone XS’ improvements in the mid-range are quite evident as voices sound deeper and more pronounced on the new phone. Stereo separation is also quite good – resulting in a filling audio experience.

I included the S9+ and G7 as comparison devices. Samsung still does a significantly better job at the low-mid ranges which gives the phone more overall presence than the iPhones, also has an advantage in the very high frequencies giving more clarity, however the new iPhone’s XS strength point in the mid-ranges is the S9’s weakness, and vocals sound a lot less present than on the XS.

As for the G7, I just wanted to showcase a mono speaker device, and just how huge the audio difference is. Unfortunately the G7, even though it promises to have a good speaker, fails in practice.

Camera - Low Light Evaluation Conclusion & End Remarks


View All Comments

  • id4andrei - Saturday, October 6, 2018 - link

    I didn't catch the 2nd part of your comment. It seems we agree. Anandtech needs an editing system. Reply
  • warrenk81 - Friday, October 5, 2018 - link

    Great to see mobile phone reviews return! Hope you can keep up the momentum with the Pixel 3 Reply
  • Ikefu - Friday, October 5, 2018 - link

    And LG V40! Reply
  • leo_sk - Friday, October 5, 2018 - link

    The way the globe in the default wallpaper just misses the notch, apple if you acknowledge that it is ugly then at least try to reduce its size Reply
  • EnzoFX - Friday, October 5, 2018 - link

    Not on an S release! It bugs me a little that people want these evolutionary changes in all aspects of the phone when it's an S release. A trend that has long been established to be more about a few internal changes.

    Also the X was a pretty big change, took everyone a bit to calibrate to the new hardware, but now with the S release, nothing is enough, when an S iphone is never meant for the n-1, non-S iphone buyer. These people, if upgrading would probably go with a newer phone rather than a year old phone.
  • cmaximus - Friday, October 5, 2018 - link

    Great review! I have a question regarding the off angle color shift of the screen. Given even small off angle viewing (5-10 degrees), I noticed a considerable blue shift in the color. Is this normal for this screen? It's not a big deal in practice, as I rarely look at my phone off angle when using it, but it'd be nice to know if this is expected behavior or not. Reply
  • melgross - Saturday, October 6, 2018 - link

    All OLEDs look flush off Angeles to the side. Some are a bit better. The LG screens are a lot worse. Reply
  • TEAMSWITCHER - Friday, October 5, 2018 - link

    I upgraded from a regular iPhone 7 to the XS Max. The biggest surprise for me is Face ID. It's far more reliable than a finger print scanner. I do lots of home improvement and car repair projects and the finger print scanner would always fail due to roughed up hands. Face ID is so fast, you barely notice it. And it works from harsh angles - I can pull the phone from my pocket, look down at it, and it unlocks... every time. The "notch" is not ideal .. but it does enable a feature that ACTUALLY works better (for me) than TouchID ever did. Reply
  • Golgatha777 - Friday, October 5, 2018 - link

    Wow, we live in the age of $1200 phones and video cards. Truly an age of wonders for the 10%ers! Reply
  • PeachNCream - Friday, October 5, 2018 - link

    There are less expensive products for people that don't have or don't want to spend as much, but I do agree in principal. The XS and Max are amazing phones that come with an outrageous price tag. The A12 is an impressive SoC, but it should be given that the handset its inside of costs more than the retail price for most desktops and laptops. Reply

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