Lars Rehm

Lars Rehm

DPReview Administrator
Works as a Technology Writer
Has a website at
Joined on Nov 7, 2007
About me:

I am a former member of Dpreview's Seattle team and now a freelance technology journalist and industry consultant based in Europe. I write most oft the smartphone and mobile imaging content on the site and if you come through Berlin or Madrid there's a chance you'll see out me shooting with one of the latest smartphones. You can follow me on Twitter @larsrehm or have a look at my personal website for more info.


Total: 2943, showing: 1 – 20
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In reply to:

the better twin: "Apple was the first mobile manufacturer to popularize still/video hybrid files with its Live Photos."
Actually it was Nokia with living images. The Lumias were so far ahead of other phones when it came to camera tech.

that's why I said "popularize" :)

Link | Posted on Mar 15, 2018 at 14:23 UTC
In reply to:

Franz Weber: Why is a bundle of two different fixed lenses allways being called a zoom?

It is like calling two persons standing next to each other a crowd.

physically it's two prime lenses but in practice it's a zoom I guess calling it a zoom should be fine.

Link | Posted on Mar 12, 2018 at 16:32 UTC
On article Sony is working on high-sensitivity dual-camera setup (37 comments in total)
In reply to:

SimenO1: The laws of physics still apply. Sensor size, aperture and lighting conditions is what counts.

what counts is the number of photons captured when you press the shutter...and that number can be increased dramatically through computational imaging :)

Link | Posted on Feb 26, 2018 at 15:35 UTC
On article Sony Xperia XZ2 brings 4K HDR video to smartphones (49 comments in total)
In reply to:

JAL: No dual camera, that is a shame for portraits
I currently own a Xperia Z5 and was planning to upgrade, I don't really like the Samsung S9, but I might keep my phone longer and wait for that dual camera module they have shown

there is a Sony dual-camera in the making, I just posted another article about that

Link | Posted on Feb 26, 2018 at 13:47 UTC
On article Sony Xperia XZ2 brings 4K HDR video to smartphones (49 comments in total)
In reply to:

wklee: I am going to presume that the XZ2 doesn't support RAW in spite of RAW support being first introduced in Lollipop? My Xperia X Compact doesn't.

The US is unlikely to get the fingerprint reader. It's there but needs to be flashed with European ROM to get the fingerprint reader to work, voiding warranty.

no talk of Raw, so I'd assume the same. Sony doesn't consider it a feature that most consumers would want/need on a smartphone.

Link | Posted on Feb 26, 2018 at 12:52 UTC
On article Sony Xperia XZ2 brings 4K HDR video to smartphones (49 comments in total)
In reply to:

Murat Sahan: How is the ois?

no OIS, as usual on Sony smartphone cameras

Link | Posted on Feb 26, 2018 at 12:31 UTC
In reply to:

Stigg: maybe this would be a good phone for me to use strictly as a camera.

can this be done without any service plan involved?

someone in the other phone thread mentioned that wifi might still be usable so the "phone" could be used to connect to the internet. is this true?

sure, you can use an Android phone without a service plan and just connect via Wi-Fi for updates and operating apps that need connectivity.

Link | Posted on Feb 15, 2018 at 17:50 UTC
In reply to:

realmadeira: Is there any phone with modern OS that has 1 inch sensor? There was Panasonic few years back, but what is the current state?

no there isn't. Consumers want a thin and sleek phone and that's impossible to make with a one inch sensors - laws of physics ;)

Link | Posted on Feb 6, 2018 at 10:42 UTC
In reply to:

mart1234: Very misleading to mention 40 MP. The cameras I own have 114 MP. 5+12+16+18+24+39. Useless information.

the difference is that the image data of the cameras you own is not combined computationally, like on most dual-camera systems (and very likely the Huawei triple)

Link | Posted on Feb 6, 2018 at 09:54 UTC
In reply to:

GarySFBCN: Is dual camera better than one camera? If so, how?

there are different concepts. You can either have two focal length or you can combine the image data from two sensors computationally (you basically have double the sensor surface and light capture capability as a single-sensor, pretty much the same as having a larger sensor...) or you have a combination of's definitely the way forward (for smartphone cameras at least)

Link | Posted on Jan 25, 2018 at 18:36 UTC
In reply to:

telefunk: Lucky you! Lot nicer to be in Barcelona than in Seattle...

haha, I am quite close to BCN most of the time :) Seattle is beautiful in summer though :)

Link | Posted on Jan 25, 2018 at 18:34 UTC
On article Huawei Mate 10 Pro camera review (180 comments in total)
In reply to:

Jefftan: no waterproof for a flagship in 2018?

it is actually mentioned in the section where we talk about body and design (page 2)

Link | Posted on Jan 15, 2018 at 08:09 UTC
On article Huawei Mate 10 Pro camera review (180 comments in total)
In reply to:

Ramchi: Micro SIM card expansion apparently available in the SIM slot 2(as Hybrid option). Not sure if the given sample was different or they make different for US market.

my test unit is dual-sim, but no card-slot

Link | Posted on Jan 14, 2018 at 19:28 UTC
On article Huawei Mate 10 Pro camera review (180 comments in total)
In reply to:

sh10453: The MicroSD up to 256 GB under "Other Specifications", on page 1, shouldn't be there, since this review is about the "Pro" version, not the "+" version.
It negates your "Conclusion", which says "No microSD expansion".

thanks, I've fixed this now

Link | Posted on Jan 14, 2018 at 19:23 UTC
In reply to:

Toni Salmonelli: "That's a lot smartphone for the $800 retail price."

Call me old fashioned, but I honestly can't get on with 800$ now beeing thought of as inexpensive for a smart phone.

it is not inexpensive but good value for money which is a different thing :)

Link | Posted on Jan 12, 2018 at 09:09 UTC
In reply to:

joe6pack: Does the APK work on 3rd party android phones?

so far only on the Google devices listed in the article

Link | Posted on Jan 2, 2018 at 19:38 UTC
In reply to:

Mark Turney: Without an actual depth map generated by the disparity between two cameras, this is nothing but a software trick.

yes it is, but Google is pretty good at most things software, you should read how it actually works, there's more behind it than you'd think :)

Link | Posted on Jan 2, 2018 at 19:37 UTC
In reply to:

BostonC: Does anyone know the new portrait mode is better than the original Pixel's 'Lens blur' feature?

you don't have to move the camera upwards, it works like on a dual-camera phone, you simply press the button, also the results look better

Link | Posted on Jan 2, 2018 at 17:57 UTC
In reply to:

UllerellU: Marketing, nothing more, I still remember the Mpx war of a few years ago, then they were going to replace the cameras ... there is one thing that lovers of smartphones do not quite understand, size matters, a lot, in photography what is everything, nothing can replace a good f1.2 glass with filter diameter of 90mm, or a good Full Frame sensor, you will have a small glass, or several, that will "simulate" bookeh, correct the distortions of your small lenses with "simulations" ", will mitigate their noise with" algorithms "and will give an image, mediocre and distorted. Do not get me wrong, for the pictures of "party", family, pets ... for all those bad photos, that people who are not fond of photography do, they are very good.

Even if one day there was the unlikely event that the image quality was close to that of a real camera, they would still be useless for photography because of its lack of ergonomics and direct manual controls.

well, size matters, or sensor surface in this case, so putting more sensors in a smartphone gives you more accumulated sensor surface which is definitely a good thing.

Link | Posted on Dec 6, 2017 at 22:23 UTC
In reply to:

WillWeaverRVA: So basically Lytro cameras are now bricks?

No, you can still process and edit all your images with the desktop application, you just can't share them online in "Living Image" format.

Link | Posted on Dec 5, 2017 at 21:21 UTC
Total: 2943, showing: 1 – 20
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