Jeff Keller

Jeff Keller

Lives in United States Seattle, WA, United States
Works as a Senior Writer, Digital Photography Review
Has a website at http://www.dpreview.com
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.

Comments

Total: 313, showing: 1 – 20
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On Nikon D750 Review preview (783 comments in total)
In reply to:

Jim Kaye: The description of the one-direction AF sensors as "horizontally sensitive" is a bit misleading. With the camera in landscape mode (as in the video posted in the review showing low-light focusing), a peripheral sensor fails to focus on a vertical line. Isn't this because it is actually "vertically sensitive" (meaning that it detects contrast along a vertical line)? Since a vertical white line on a black background doesn't present much contrast in this direction, the sensor doesn't see it. There is lots of horizontal contrast, though (black on the left of the vertical line, then the white line itself, then black again to the right of the line). By "horizontally sensitive" I imagine the reviewer means that the sensor "sees" horizontal (but not vertical) lines. But the sensor itself must be oriented vertically with the camera in this orientation, so I would call it "vertically sensitive." Or am I missing something?

Grabbing popcorn for when Rishi responds to that comment...

Direct link | Posted on Dec 20, 2014 at 20:22 UTC
On Nikon D750 Review preview (783 comments in total)
In reply to:

Matthias Hutter: Olympic Sculpture Park links to the wrong image.

Fixed, thanks.

Direct link | Posted on Dec 20, 2014 at 19:46 UTC
On Nikon D750 Review preview (783 comments in total)
In reply to:

Tharaphita: I think it is worth to note that about SD cards clearing buffer UHS-II class card works actually at 45MB/s speed at UHS-I cameras like D750. UHS-I class at 95MB/s would better to test.

We tried several different UHS-I cards as well and found no difference in performance or buffer clearing times.

Direct link | Posted on Dec 20, 2014 at 05:51 UTC
On Sony Alpha 7 II real-world sample gallery posted article (232 comments in total)
In reply to:

atamola: oh my...
the number one feature in the A7 II for 90% of potential buyers/switchers/upgraders is the IBIS claiming 4.5 stops... and yet, the geniuses with the camera did not even try to go below the 1/focal length rule

The very first image was taken at 200mm with a 1/80 sec shutter speed.

Direct link | Posted on Dec 4, 2014 at 22:22 UTC
On Ten things you need to know about the Sony Alpha 7 II article (264 comments in total)
In reply to:

Mitrajoon: You didn't show the back of the camera. Does it have separate AF-On and AEL buttons, or the capability to do this. Olympus OMD 1, for instance, doesn't.

Being the nice guy that I am, I added a photo of the rear on slide 10.

Direct link | Posted on Nov 27, 2014 at 01:18 UTC
On Ten things you need to know about the Sony Alpha 7 II article (264 comments in total)
In reply to:

fvalduga: I would like to know if a7II compresses its raw files the same way as the other models, from 14 to 11 bits. Does anyone know about this? Thanks in advance

short answer: yes.

Direct link | Posted on Nov 27, 2014 at 01:13 UTC
On Ten things you need to know about the Sony Alpha 7 II article (264 comments in total)
In reply to:

Serickmetz: Sexy camera, Pretty hands!

Thanks, I got my nails done right before the shoot.

Direct link | Posted on Nov 27, 2014 at 01:12 UTC
On Sony announces US pricing for full-frame Alpha 7 II article (177 comments in total)
In reply to:

stormy_weather: "The a7 II is the world's first full-frame camera with in-body image stabilization" ... really?

Fixed, thanks guys.

Direct link | Posted on Nov 26, 2014 at 18:02 UTC
On Sony announces US pricing for full-frame Alpha 7 II article (177 comments in total)
In reply to:

Stubb: Let's see if there's an option for losslessly compressed raw files.

From the discussions we had with Sony, no changes were made to the image pipeline. So that should be unchanged.

Direct link | Posted on Nov 26, 2014 at 18:00 UTC

Thanks for the catch on which RX100 model it was- the article has been corrected.

Direct link | Posted on Nov 25, 2014 at 20:45 UTC as 160th comment
In reply to:

aquarta: Does anyone think the battery performance may have improved on the A7 II?

@quezra: the CIPA figures are taken with Wi-Fi turned off

Direct link | Posted on Nov 20, 2014 at 15:39 UTC
In reply to:

Seeky: DPR, the A7 had already a magnesium top panel, not plastic. The A7 had a composite front panel which is apparently magnesium on the A7II.

Thanks for catching that

Direct link | Posted on Nov 20, 2014 at 07:57 UTC
In reply to:

left eye: It's looking much more mature - design wise, the A7's fingerprint magnet smooth paint always troubled me, glad sony didn't miss this opportunity for a stippled finish!

But seriously yes apart from the IBIS news, I assume that larger grip houses a larger battery!!

- arh I just checked sonyalpharumours, it's 'reportedly' the same FW-50 battery ;-(

If it's any consolation the battery life has gone from 340 shots on the a7 to 350 here :)

Direct link | Posted on Nov 20, 2014 at 07:28 UTC
On Panasonic Lumix DMC-LX100 Review preview (824 comments in total)
In reply to:

dabhannover: Great review as ever! But how did you convert the RAW-files in ACR? ACR 8.7 RC does not support the LX100. Has there been an update recently - or did you switch the metadata to Lumix GX7?

We often get access to early betas of ACR, which is the case here.

Direct link | Posted on Nov 18, 2014 at 19:04 UTC
On Canon PowerShot G7 X Review preview (412 comments in total)
In reply to:

camerosity: The photo of the North Fork Falls is not in Bellevue, it's actually in Newcastle...

Doh. I didn't see the "now entering Newcastle" sign on the trail :)

Direct link | Posted on Nov 12, 2014 at 07:10 UTC
On Canon PowerShot G7 X Review preview (412 comments in total)
In reply to:

Buena Vista: Suggestion to DP: If you are going to review a camera in fits and starts, and you did with this camera over the course of several weeks, please tell us what is new in each increment of the review. For instance, what did you do in today's review that was added to or different from what you published in the prior review? Then I wouldn't have to re-read so much of the review and guess about what is new and different in the review. Thank you.

We did just that, on the bottom of the first page.

Direct link | Posted on Nov 11, 2014 at 22:01 UTC
On Canon PowerShot G7 X Review preview (412 comments in total)
In reply to:

HowaboutRAW: So there are no raw samples because the official ACR 8 doesn't extract them yet?

Even studio samples (raw) would help.

There are Raw samples... on the image quality and studio test pages. On the latter you need to flip the pulldown from JPEG to Raw, and you can view and download them. We have an early release of ACR which allows us to convert them.

Direct link | Posted on Nov 11, 2014 at 16:45 UTC
On Panasonic Lumix DMC-LX100 First Impressions Review preview (1869 comments in total)
In reply to:

Wilight: Richard, have you ever had any experience with the RX100 III? Can you confirm if the the LX100 AF is faster? And what about the (AF) precision?

Richard has a *lot* to say about the RX100 III, so I'm sure he'll drop by.

Direct link | Posted on Oct 30, 2014 at 05:59 UTC
In reply to:

iudex: Oh I have just noticed this: max format is 35mm FF. Is it just a typo, or is it really a FF zoom?

It was more like a "drop-down menu fail" than a typo, but it's been fixed. Sorry for the scare.

Direct link | Posted on Oct 29, 2014 at 22:34 UTC
On Canon PowerShot G7 X First Impressions Review preview (954 comments in total)
In reply to:

Cheng Bao: The "If you have a look at our 'video test scene' you'll" link is broken, shows server not found.
Your "a peek at our 'studio test scene' shows that the camera" page is broken too, let me know your backend is asp visual basic scripts

fixed

Direct link | Posted on Oct 21, 2014 at 16:38 UTC
Total: 313, showing: 1 – 20
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