Jeff Keller

Jeff Keller

DPReview Administrator
Lives in United States Seattle, WA, United States
Works as a Senior Writer, Digital Photography Review
Has a website at
Joined on Feb 19, 2013
About me:

I'm the former publisher of the Digital Camera Resource Page who is now writing reviews and managing new product launches here at DPReview.


Total: 566, showing: 1 – 20
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In reply to:

Robemo: It's a bit confusing review which contains some errors/bad choices:

1. The comparison at 400mm shows that the Panasonic focused on the orange crane, the Sony on the white building behind it, making that comparison useless.
2. Why using JPEG's to compare lens quality in the comparison tool? JPEG rendering has never been Panasonics strong point. When you download the RAW files and process them equally, you will find the difference less shocking and at some focal ranges (around 135mm for instance) far less than the JPEG's suggest.

In general (and DPR has mentioned it in other reviews) lenses are the weak spot of these 1 inch high density small sensor cameras with complex zooms. Lenses are strained a lot. DPR mentioned in other reviews (of Sony RX100 models I think) how much trouble it took them to find a review model with a proper lens. Lots of fluctuations in lens performance. That's probably why Sony spent so much effort/money in the RX10 III lens.

@Robemo, these are Raw images which are converted to JPEGs with default ACR settings. You can download the original Raws if you'd like, there's a link right below the thumbnail.

Also, we use tap-to-focus on subjects at infinity, so there shouldn't be any OOF shots.

Link | Posted on Jan 19, 2017 at 21:41 UTC

The error on the last page about the FZ2500 being weather-selaed has been fixed. Apologies for the mistake.

Link | Posted on Jan 18, 2017 at 02:49 UTC as 32nd comment | 2 replies
In reply to:

A Girard: And in the summary where you usually see Conclusion/Samples, yet all you see is Conclusion. Reviewer have a few pints in the pub before he published this review?

Sorry, can you clarify what you're not seeing? Everything shows up for me: conclusion, scoring, photos.

Link | Posted on Jan 18, 2017 at 02:47 UTC
In reply to:

PC Wheeler: Interesting review. But some oddities.

In the Page 1 summary table it says the FZ1000 has a touch screen -- if so, I was cheated because mine seems not to have this feature.

And in the Conclusion they say in the table of Pros and Cons under Cons "No support for USB charging", then just above the Video heading it says "The camera supports USB charging, and kudos to Panasonic for also including an external charger in the box."

Thanks for catching those!

Link | Posted on Jan 17, 2017 at 20:46 UTC
In reply to:

Najinsky: Very poor gallery.

First, it's an 18-150 lens, yet only two shots are over 50mm; one at 62/f11 and one at 150/f9.

The 150 f9 shot has nothing in sharp focus, is this a photographer choice or is the lens really that soft at 150 f/9? If it's really that soft there is no point having the lens go to 150 as an upsampled 100mm would look better. Well, that could be the case for this type of zoom, but in this case we have to guess because there is no 100mm shot, or 80mm, or 135mm, etc.

Also, to keep lenses compact and easier to design, software corrections are allowed for. This happens automatically during raw conversion for many cameras. For example, M43 images carry image correction data in the image file which is applied automatically by most major converters. How does it work with EOS-M, as some of these images would clearly benefit from some basic CA and diffraction compensation.

Guys, you know I love you, but I find this content quite sub-par on several levels.

@Najinksy: the small aperture shots were camera's choice, not photographers choice. We were hoping to add some telephoto shots this weekend but the weather has not been cooperative.

Link | Posted on Jan 9, 2017 at 05:03 UTC
In reply to:

M02: Nice pics. I have an M5 and I’m really interested in this lens. The image quality looks good. The only criticism I have is the significant amount of chromatic aberration, but I see this clears up nicely in DPP. But I’m a bit puzzled by the fact that none of these pics are taken at maximum aperture, and hardly any in the upper half of the zoom range. The extra zoom range is the main appeal over the 18-55, and with such a slow lens you are going to be shooting wide open much of the time. Oh well, still encouraging results for a super zoom. I'm probably going to get one.

Telephoto shots are coming... thanks for your patience!

Link | Posted on Jan 9, 2017 at 05:00 UTC
In reply to:

Jorginho: Sensor res is wrong in your list. Not 4188 x 3888 for sure.

Fixed, thanks for catching that.

Link | Posted on Jan 4, 2017 at 19:54 UTC
On article A comfortable fit: Panasonic Lumix GX850 overview (117 comments in total)
In reply to:

justmeMN: "in the US in early February for a body-only price of $549" -DPR

In my experience, taking photos without a lens produces poor results.

It does indeed come with the 12-32 for the $549 price.

Link | Posted on Jan 4, 2017 at 19:10 UTC
On article A comfortable fit: Panasonic Lumix GX850 overview (117 comments in total)
In reply to:

justmeMN: "in the US in early February for a body-only price of $549" -DPR

In my experience, taking photos without a lens produces poor results.

We've received conflicting info about whether or not it comes with a lens. Stay tuned.

Link | Posted on Jan 4, 2017 at 19:01 UTC
In reply to:

WGChsv: I wonder if the two planned firmware updates will be free? In the past large updates (addition of V-Log) have run about $99.

I believe they will be. V-Log L remains $99.

Link | Posted on Jan 4, 2017 at 19:00 UTC
In reply to:

TheClueless: Wut, Apple put some blond hair on the actual pioneer of modern digital cameras, the QV-10 and called it the Quicktake 200 3 years later. If you're a digital camera blog and not an Apple fanboi blog, get your facts right.

The QuickTake 100 preceded the QV-10 by about a year. The QV-10 was, however, the first consumer camera to have live view.

Link | Posted on Dec 31, 2016 at 00:43 UTC
On article Throwback Thursday: the dual-lens Kodak EasyShare V570 (21 comments in total)
In reply to:

120 to 35: Not the best image quality by 2006 standards but it captured fond memories. I refer to "RIP Zoe, 2005-2014" caption on one of the photos.

Yeah, I added that since the anniversary of her passing is this weekend. Cancer sucks.

Link | Posted on Dec 9, 2016 at 00:18 UTC
On article Throwback Thursday: Olympus E-10 (159 comments in total)
In reply to:

TBLF: Still have mine on the shelf for nostalgia, sticky grips and all! 😎

This was my first positive experience with digital coming from a lifetime of film. Before the E10, back when kodak/fuji/nikon was showing joint venture , $10,000 dollar VGA resolution DSLR's at trade shows, I thought digital was a joke and would never threaten film.

This little camera was the first digital I picked up and thought, hey, they are catching up, and maybe they will surpass film some day. The lens is actually very very good.

I take it off the shelf every now and then and stick batteries in it just to remind myself how far we have come. This thing is pretty slow by todays standards, and man, that lcd is tiny, but it still takes a respectable small snapshot and everything works like new except for the sticky grips.

If anyone knows how to un-stick the grip I'd love to hear it. Tried 70% isopropyl alcohol which didn't do anything.

Link | Posted on Dec 2, 2016 at 08:58 UTC
On article Throwback Thursday: Olympus E-10 (159 comments in total)
In reply to:

yslee1: Since it's Jeff Keller writing this, I'm going to link back to HIS review of the E10 for some added nostalgia. :P

Ha, thanks for that!

Link | Posted on Dec 1, 2016 at 19:40 UTC
On article Ultimate OM-D: Olympus E-M1 Mark II Review (1295 comments in total)
In reply to:

m1testit: Hi,

does anyone know if the "bike test" using C-AF + TR was made with a tripod?

As far as I know the E-M1 always had problems with the motion of the camera in C-AF + TRACKING mode because the IS cannot distinguish between a moving object and the "moving" camera.


@m1testit: these are always taken on a tripod.

Link | Posted on Nov 25, 2016 at 20:21 UTC
On article Ultimate OM-D: Olympus E-M1 Mark II Review (1295 comments in total)
In reply to:

whumber: Two errors on the first page

1. E-M1 II only does 15 fps with mechanical shutter when the AF and AE are locked. It does 10 fps with AE/AF just like the D500. Maybe not an error per se, but misleading. Also, the E-M1 does 9 fps with mechanical shutter with AF-C, 6.5 fps with EFCS and AF-C.

2. Effective magnification for the E-M1 & E-M1II EVF is 0.74x, not 0.65x.

Thanks for the correction. Where are you seeing the 9 fps number for the E-M1? I can't seem to find it in any official documentation.


Link | Posted on Nov 23, 2016 at 16:26 UTC
On article Ultimate OM-D: Olympus E-M1 Mark II Review (1295 comments in total)
In reply to:

RadPhoto: "Not only is the battery capacity increased by 37% (and CIPA rating has jumped from 350 to 440 shots from the E-M1 to the E-M1 II), but the new charger will recharge the battery in 50% less time as well."

Sony? Are you listening?

It's a MUCH larger battery. Not sure it would fit in anything in Sony's current line-up, save for the a99 II.

Link | Posted on Nov 23, 2016 at 16:20 UTC
In reply to:

FuhTeng: I'm looking forward to the D500 to EM1 II comparison tests. And comparing the EM1 II to the XT2 and GH5 and a6500, but mainly, the D500 versus EM1 II.

@FuhTeng, you saw this I assume:

Link | Posted on Nov 21, 2016 at 18:15 UTC
In reply to:

Fun 4 all: From examples I've seen rolling shutter is near non-existent. I look forward to more tests on this. With no noticeable rolling shutter under most circumstances, the 18 FPS and 60 FPS become viable tools.
The pro capture option is something I've dreamed about for years. With my DSLRs I was never quite fast enough to capture the exact moment I wanted.

I don't get the jealous trolling here. I've been a big fan of the challenges in this forum and seen this 'smaller' sensor beat out larger ones many times. I've seen the 1 inch sensors win too.
My guess is some people are upset and jealous that this camera does things theirs cannot. I'll settle for a little more noise and less DR, vs. no picture at all. :)

We've seen some rolling shutter at 60 fps but not any slower. We'll have an example or two in the review later this week.

Link | Posted on Nov 21, 2016 at 17:56 UTC
In reply to:

wolfie: Still unable to arrange any sort of C-AF sequence test after all this time?

This is a gallery, not a review. Trust me when I say we're working hard on the review, and it will be posted as soon as possible.

Link | Posted on Nov 9, 2016 at 19:18 UTC
Total: 566, showing: 1 – 20
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