Lars Rehm

Lars Rehm

DPReview Administrator
Works as a Technology Writer
Has a website at http://www.larsrehm.com
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.

Comments

Total: 3024, showing: 1 – 20
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In reply to:

Mark B UK: Do these cameras shoot RAW, and if so is this possible with all three lens options? I tire of reading smartphone reports on this site that omit this information, which is critical to keen photographers. Likewise, we need to know whether and to what extent phones are weather sealed.

@Johan Borg frame-stacking is the key, I am not sure if the P20 Pro did it (it's ancient by smartphone standards) but it provides benefits you can't get out of a single Raw frame...

Link | Posted on Apr 14, 2020 at 19:57 UTC
In reply to:

Mark B UK: Do these cameras shoot RAW, and if so is this possible with all three lens options? I tire of reading smartphone reports on this site that omit this information, which is critical to keen photographers. Likewise, we need to know whether and to what extent phones are weather sealed.

@romasito, to be honest I haven't tried this on many phones recently but my P30 Pro certainly does Raw on all three cameras...that's a model from early 2019, so i'd expect newer models to do the same.

Link | Posted on Apr 14, 2020 at 19:56 UTC
In reply to:

Mark B UK: Do these cameras shoot RAW, and if so is this possible with all three lens options? I tire of reading smartphone reports on this site that omit this information, which is critical to keen photographers. Likewise, we need to know whether and to what extent phones are weather sealed.

I haven't seen any high-end phone in the last few years that would not be capable of recording Raw. However, given none of the computational wizardy is applied to Raw files I really would not recommend using Raw on an phone these days. Even with the best Raw processing you'll always end up with more noise, less dynamic range and likely less detail as well than in the jpg.

Link | Posted on Apr 14, 2020 at 17:34 UTC
In reply to:

twinfighter: so sad... the P30Pro comes with 28 mm equiv. f/1.6 camera. Now, the P40Pro got 23 mm equiv. and f/1.9. This is too wide for general photos and portraits and the new f/1.9 cancels the benefit of the new sensor. Now you have to crop every image

Afaik it is a 23mm lens but Huawei crops it 27mm. Basically this allows them to design a thinner lens that fits into the device and eliminates issues with corner softness and distortion. The sensor offers more than enough resolution for that.

Link | Posted on Mar 27, 2020 at 09:05 UTC
On article Seagate is planning to release 18 and 20TB HDDs in 2020 (114 comments in total)
In reply to:

Paul Trantow: No apostrophe in 'hard drives.'

thanks, fixed now :)

Link | Posted on Jan 13, 2020 at 16:48 UTC
In reply to:

Calphate: Looks fantastic on paper just like my Insta360 One X

Then I found out that the battery can't last more than 3 min even though the temperature is still above 0 degrees, and that's just the beginning of a series of other problems

must be something wrong with your One X...I have used it extensively and can confirm the battery lasts A LOT longer than 3min. I would not know how long exactly because I have never run out...

Link | Posted on Jan 7, 2020 at 17:25 UTC
In reply to:

pepegot: Still not an 8k camera. with an editor 5.7k video-not too good on a big screen. Good for cell phones. Does it have an editor for the computer or is it just a cell phone toy?

Insta360 has a desktop editing application...but that still doesn't get you more resolution...

Link | Posted on Jan 7, 2020 at 16:49 UTC
In reply to:

ggc: I would like to understand how much is marketing and how much is a real improvement.... pictures from newer phones i have seen are something like 3 megapixel images, with a lot of blur from noise reduction and less detail than nowadays "old" real 12 megapixel phones. And some phones are even incapable of shooting at night at base iso with real long exposures. Tele and wide cameras often without raw.

Is this an improvement?

I am really not sure which new phones you are looking at. I think the image quality and detail from the latest high-end phones is pretty amazing and way ahead of anything that was released only a couple of years ago. If you shoot Raw on your phone, you don't take advantage of most of the computational imaging functions and with the multi-frame night modes there really is no obvious reason to shoot long exposures unless you are after some motion blur effect...but even for that there are computational imaging features that work amazingly well (for example on the latest Huaweis).

Link | Posted on Dec 18, 2019 at 15:41 UTC
In reply to:

dr.noise: I don't see how the second display uses the USB port in any of the photos. The display attaches from the side and the USB port is on the bottom. How do they connect? Don't understand what's going on.

Exactly, the 2nd display is integrated into case (and cannot be removed from that case). The G8X slides into that case and connects to it via its USB port.

Link | Posted on Nov 18, 2019 at 11:57 UTC
In reply to:

cdembrey: " ...should leave a sizeable profit margin for Apple, even after adding overhead expenses into the calculation."

Apple spends Billions on R&D, buying new technology, licensing new technology, etc, etc. An iPhone is much more than a camera.

...well, those are the overheads I mention...

Link | Posted on Oct 10, 2019 at 19:15 UTC
In reply to:

GodSpeaks: I'll wait for the reviews of a production phone using this periscope camera before passing any judgements.

The Huawei P30 Pro uses a very similar system already...also the OPPO Reno but you'll probably find more test reports for the Huawei :)

Link | Posted on Oct 7, 2019 at 18:22 UTC
In reply to:

entoman: What's the difference between having a 64MP sensor that combines 4 (tiny) pixels into one, to produce a 16MP output.... and having a 16MP sensor with pixels that are 4 times larger?

As far as I can see, the result, in terms of noise levels, dynamic range and detail, would be exactly the same.

Hey noisephotographer, where are you based? Anywhere in Europe by any chance? I'd love to meet up for a beer (or other beverage) sometime. I am sure it would be an enlightening conversation (for me of course!)

Link | Posted on Aug 29, 2019 at 18:12 UTC
In reply to:

entoman: What's the difference between having a 64MP sensor that combines 4 (tiny) pixels into one, to produce a 16MP output.... and having a 16MP sensor with pixels that are 4 times larger?

As far as I can see, the result, in terms of noise levels, dynamic range and detail, would be exactly the same.

Here is a pretty good article on the subject: https://www.gsmarena.com/quad_bayer_sensors_explained-news-37459.php

Link | Posted on Aug 29, 2019 at 17:12 UTC
In reply to:

madeinlisboa: More candies to play with. Each new camera has a new "feature" to convince lambs to waste another thousand euros. How naive to pay such amount for software specific to a hardware. I feel sorry for you

@madeinlisboa you should consider updating to a current model, it might be an eye-opening experience, especially from a camera point of view ;)

Link | Posted on Jul 25, 2019 at 13:54 UTC
In reply to:

madeinlisboa: More candies to play with. Each new camera has a new "feature" to convince lambs to waste another thousand euros. How naive to pay such amount for software specific to a hardware. I feel sorry for you

Personally I would not upgrade my phone just for this feature alone. Nonetheless, it's great to see how mobile manufacturers come up with these clever ideas, driving innovation in imaging, something the 'traditional' camera makers seem to have stopped doing quite some time ago. This is just one feature but bundle it with all the other computational imaging methods and you can see why people have stopped buying compact cameras.

Link | Posted on Jul 24, 2019 at 17:15 UTC
In reply to:

Jefftan: "Unlike the long exposure options on the Huawei P30 Pro"

referring to "night mode"?

no, there's a light painting mode with several sub-modes (traffic trails, light graffiti, silky water, star trails) that works pretty well handheld. Night mode is not designed to simulate long exposures.

Link | Posted on Jul 3, 2019 at 18:52 UTC
In reply to:

NJOceanView: I still ache for the day Sony puts this technology into their RX100 and turns the entire P&S camera segment on its head.

difficult, as the RX100 does not have a mini-computer attached to it ;)

Link | Posted on May 30, 2019 at 12:12 UTC
In reply to:

Imager of: Why on earth would you need a zoom lens on a phone camera! Someone please explain the need for this?

no, you have a 27mm lens and a 135mm lens. At those focal lengths no merging is happening (multi-frame methods might still be used for denoising, DR, etc though), the merging happens at focal lengths between 27 and 135mm.

Link | Posted on May 22, 2019 at 17:58 UTC
In reply to:

Imager of: Why on earth would you need a zoom lens on a phone camera! Someone please explain the need for this?

@winkalman those systems are much more complex than that, none of them use simple digital zoom. Image data form several lenses is merged, super-resolution algorithms are used etcetc...what counts is the outcome and that is very close to a conventional fully optical zoom on a compact camera, in some respects even better...

Link | Posted on May 22, 2019 at 15:39 UTC
In reply to:

Imager of: Why on earth would you need a zoom lens on a phone camera! Someone please explain the need for this?

Why would you not want a zoom? I've been using the P30 Pro for a couple of months now and the ability to zoom properly on a smartphone simply allows you to take pictures you could not have taken without this feature. I am looking forward to the next iterations of these systems :)

Link | Posted on May 22, 2019 at 14:56 UTC
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