Jack Hogan

Lives in Canada Toronto, Canada
Has a website at www.strollswithmydog.com
Joined on Nov 23, 2009

Comments

Total: 36, showing: 1 – 20
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In reply to:

Jack Hogan: Well done. I feel however that to fairly compare noise and DR in captures taken in pixel-shift mode with others, one should first stack four captures of the others.

Are you mixing up SNR with spatial resolution? It's amazing how many people do. SNR/DR is measured in a uniform area like the one shown in the comparison above: the K-1 has no advantage there if compared apples to apples (i.e. 4 captures vs 4 captures).

As far as spatial resolution is concerned, pixel-shift provides an advantage in chromatic areas - but very little or none in neutral/hueless ones: http://www.dpreview.com/forums/post/57727279

Kudos to Pentax, but let's not stretch it beyond what it is.

Cheers,
Jack

Link | Posted on May 9, 2016 at 20:13 UTC

Well done. I feel however that to fairly compare noise and DR in captures taken in pixel-shift mode with others, one should first stack four captures of the others.

Link | Posted on May 9, 2016 at 12:56 UTC as 132nd comment | 3 replies
On article Leica Q In-depth Review (1113 comments in total)
In reply to:

Andrew Elliott: If only my Q had a CCD sensor...

Colors out of CCD sensors are no more or less juicy than out of current sensors: it's just that since the days of CCDs a decade ago manufacturers have figured out that if you keep your customers on a constant sugar high their photographs all start to look like Ken Rockwell's.

Link | Posted on Mar 24, 2016 at 18:20 UTC
On article iPhone SE is a compact-sized iPhone 6s (184 comments in total)

Yawn...

Link | Posted on Mar 21, 2016 at 21:43 UTC as 42nd comment

Yawn...

Link | Posted on Mar 21, 2016 at 21:43 UTC as 39th comment
On photo Telemarking Contamines in the Skiing and Snowboarding challenge (2 comments in total)

Love it, great job.

Link | Posted on Mar 4, 2016 at 12:54 UTC as 1st comment | 1 reply

I was looking forward to checking its non-Bayered resolution. Why is it so blurry at base ISO?

Link | Posted on Jan 12, 2016 at 15:28 UTC as 14th comment
On article Apple patent describes dual-camera design (32 comments in total)

The give patents for stuff like this?

Link | Posted on Jan 12, 2016 at 15:25 UTC as 10th comment | 1 reply
On article What is equivalence and why should I care? (2163 comments in total)

A good start and a good write up.

I would add a section on equivalent spatial resolution. Also, was the GH4 free? Your shareholder says that today the Panasonic/Leica 42.5/1.2 costs $1599 by itself.

Link | Posted on Jul 8, 2014 at 13:48 UTC as 256th comment | 2 replies
On article Mockups emerge of new Olympus OM-D 'OM-G' (333 comments in total)

Full Frame BSI sensor? OMG, that's truly incredible! But wouldn't it be nice... :-)

Link | Posted on Apr 1, 2014 at 17:55 UTC as 168th comment

We look forward to seeing the relevant EM1 images in the New Studio Scene updated to reflect performance with the new mode. The current ones show it sompm' fierce.

Link | Posted on Mar 31, 2014 at 13:02 UTC as 47th comment | 1 reply
On photo After the blizzard in the My Best Photo Ever!! challenge (3 comments in total)

A beaut

Link | Posted on Mar 11, 2014 at 13:42 UTC as 2nd comment | 1 reply

Welcome ViewNX3.

Capture NX2 RIP:

http://www.nikon.com/news/2014/0225_soft_02.htm

Link | Posted on Feb 25, 2014 at 08:20 UTC as 71st comment
On article Integrating the Apple MacBook Air into a pro workflow (346 comments in total)

Don't know what the complaints are about: this article is clearly not about the 'Best Laptop for a Photographer on Location' - that would have been a (more) useful article, but it's not what this one is about.

This article is about how one Apple-lovin' pro uses his new toy. However good or bad his criteria and choice is compared to what is available out there we'll have to search elsewhere.

Link | Posted on Jan 14, 2014 at 07:57 UTC as 101st comment | 1 reply
On photo D600 vs RX100 and SX50 in Jack Hogan's photo gallery (1 comment in total)

http://www.dpreview.com/forums/thread/3569698?page=2

Link | Posted on Nov 4, 2013 at 13:29 UTC as 1st comment
On article Canon EOS 70D Review (720 comments in total)
In reply to:

neo_nights: While I LOVE DPReview's reviews and do not share the same amount of complaint many people here do, I still fail to understand the Dynamic Range test.

According to your tests, this 70D has more DR than Pentax K5, which, by DxO's ratings, is measured to have 14.1 EV, while the 70D has only 11.6 EV!
Well, if we see more recent reviews here, even m4/3s cameras get higher DR...
(which would be highly unlikely due sensor size difference)

How?

It's a well known pet peeve that DPReview does not measure the DR of the sensor/camera but that of the 8-bit jpeg file as processed in-camera - which is pretty well arbitrarily controlled by the contrast/brightness curves applied during processing. Unrepresentative you say? N/C.

Link | Posted on Oct 31, 2013 at 08:21 UTC
On article Canon EOS 70D Review (720 comments in total)

"In terms of image quality the 70D is essentially on a par with its rivals"

Who's your daddy, DPReview? Informed photographers know that the IQ of the 70D is uncompetitive today and lags a couple of generations behind that of its rivals, whether that be DR, color sensitivity or spatial resolution. Its strengths lie elsewhere.

Your readers want objective information in order to make an informed decision when buying a camera of a certain class and budget.

Q: Is this the better camera for Landscapes? A: No
Q: Is this the better camera for Portraits? A: No
Q: Is this the better camera for Wildlife/BIF? A: No
Q: Is this the better camera for Video? A: Maybe
Q: if I go for a smaller/lighter system will I lose IQ? A: It depends on the kind of shooting you do

The fact is, once you start comparing it objectively to its brothers from another mother the 70D's IQ comes out looking pretty short. Sugar coat it, but this is what your readers expect from you.

Jack

Link | Posted on Oct 31, 2013 at 08:14 UTC as 217th comment | 9 replies
Total: 36, showing: 1 – 20
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