Richard Butler

Richard Butler

DPReview Administrator
Lives in United Kingdom Seattle, United Kingdom
Joined on Nov 7, 2007

Comments

Total: 4815, showing: 1 – 20
« First‹ Previous12345Next ›Last »
On article Alpha-better: Sony a9 versus a7R II (366 comments in total)
In reply to:

mxx: More articles to be expected:
Tomorrow: How to get your home ready for your new Sony A9
Day after tomorrow: Introducing you new A9 to the rest of the family
Later: Tips for when your dogs do not get along with your new A9

Employment law prevents us using subterranean mammals in content production roles.

Link | Posted on Apr 26, 2017 at 21:12 UTC
On article Alpha-better: Sony a9 versus a7R II (366 comments in total)
In reply to:

Gary Martin: Holding out for the A13.

Because you want to take the 'A' road, the OK road to Shoeburyness?

Link | Posted on Apr 26, 2017 at 21:10 UTC
On article Alpha-better: Sony a9 versus a7R II (366 comments in total)
In reply to:

Chuckmet: When can we expect to see reliability and durability comparisons between top camera makers. All I ever see is tech. And price comparisons which is important but not as important as reliability in my opinion.

The worst case scenario is that you develop a test with limited real-world applicability and just publish your findings.

Let's say Camera A fails after 10 hours and Camera B fails after 20. Great, Camera B is twice as durable.

But wait, six months later, lots of people report Camera B fails all the time. You buy a second copy of Camera B, it still survives for 20 hours. (perhaps the test isn't simulating the real-world condition in which it fails).

You re-test another copy of Camera A. This copy survives 30 hours of testing.

What reliable piece of data have we learned from destroying four cameras? Not much. The one solid data point is from the large sample of users actually using it.

As such, LensRentals is just about the only place I can think of that will have any insight into reliability/durability, since they have lots of copies being used by lots of people.

Link | Posted on Apr 26, 2017 at 17:46 UTC
On article Alpha-better: Sony a9 versus a7R II (366 comments in total)
In reply to:

Chuckmet: When can we expect to see reliability and durability comparisons between top camera makers. All I ever see is tech. And price comparisons which is important but not as important as reliability in my opinion.

entoman - There are at least three significant problems with durability testing:

1) You need to buy every camera because no one is going to lend us cameras to test to destruction. This is made significantly more problematic by:

2) In a complex system with multiple potential failure mechanisms, there'll be a distribution (Poisson?) of failures. Two cameras of the same type may fail at very different times and potentially through different mechanisms. So you need to test a large sample of units to find a pattern.

3) Your tests must simulate real-world stresses if they're not to give meaningless results. Only dedicated waterproof cameras (usually compacts) are rated as being submersible, so your proposed 5 minute dunking would achieve nothing except that it's easy to destroy a camera if you want to.

And that's before you get to the sheer cost of this endeavour. Is the magazine you mentioned still in business?

Link | Posted on Apr 26, 2017 at 17:40 UTC
In reply to:

ramonjsantiago: "85mm F1.2 is equivalent to 67mm F0.95"
How is that? Maybe its equivalent to to a 67mm F1.2.

digifan: F1.2=F1.2 in terms of exposure is a circular argument. The way we think of ISO and exposure is based on light per unit area, which is what f-numbers tell you.

Equivalent f-numbers show you the aspects of behaviour that get hidden by that.

If you can hold both concepts in your head (a light per unit area and a total light way of looking at things), you can understand more about how the lens will behave.

Sure, you can choose not to, but saying 'you just have to accept that different formats five different depth-of-field and different image quality' seems perverse when there's an easy way of understanding the magnitude of those differences (and hence the degree to which you can or can't compensate for them).

Link | Posted on Apr 26, 2017 at 17:26 UTC
In reply to:

CanonKen: Why are these tools needed for video *capture*, but you don't see this sort of stuff being used for still photography?

@dropbars - I love false colours - I used the Video Assist 4K to shoot the X-T2 video a few months back.

Link | Posted on Apr 26, 2017 at 17:13 UTC
In reply to:

ramonjsantiago: "85mm F1.2 is equivalent to 67mm F0.95"
How is that? Maybe its equivalent to to a 67mm F1.2.

Because in most respects (diffraction, depth-of-field and light per image), an 85mm F1.2 on 44 x 33mm sensor will behave in a way that's [equivalent to](https://www.dpreview.com/articles/2666934640/) a 67mm F0.95 on full frame sensor.

The lens itself remains an 85mm F1.2 and, since exposure is designed to work across different formats, F1.2 is the value that matters for exposure.

Link | Posted on Apr 26, 2017 at 00:05 UTC
In reply to:

surlezi: To DPR staff:
You're comparing Canon to Sony, and forget about Nikon...
True they're already way behind Canon in the sports market, but is it also because they're somewhat bound to suffer more than Canon ?

The thing is now that the AF comes on the sensor itself, Nikon are depending on sensor provider for AF.
Only Sony and Canon produce their own sensors, which means soon only Sony and Canon will have a full control of their AF system ?

It just happens that all four of the photojournalists we spoke to shoot Canon (though some of [the structural reasons](https://www.dpreview.com/opinion/1937765842/) why it's difficult for pros to move to Sony have probably also had an impact on how many people moved back to Nikon, post D3).

Hansen said that she'd shot Nikon when working on the (US) East Coast, and that Nikon has more of a pro presence there, which was a perspective I'd not heard before.

Link | Posted on Apr 25, 2017 at 21:17 UTC
In reply to:

chshooter: Using the 85mm lens on medium format doesn't convince me. The lens was designed for 35mm sensors so heavy vignetting and soft corners seem to be pretty likely on a bigger sensor

The company says it's a G-mount version of their existing 85mm F1.4. It's not clear how much beyond the 43mm diagonal of 'full frame' the image circle is, so it's not clear how much vignetting there would be.

Link | Posted on Apr 25, 2017 at 21:00 UTC
In reply to:

CanonKen: Why are these tools needed for video *capture*, but you don't see this sort of stuff being used for still photography?

These tools were developed for videographers (and are very familiar to them), so most camera makers don't think to put them on stills cameras. I have to say, I've found it fascinating, even from a stills perspective, to start to learn waveforms, the RGB parade and vectorscope.

Even though I'm just learning how to properly interpret and recognise what they're telling me, I'd love to shoot with a stills camera that offered these features (I'd find the waveform much more useful than a histogram, personally).

Link | Posted on Apr 25, 2017 at 17:42 UTC
On article Sony a9: Why being better might not be enough (752 comments in total)
In reply to:

D7000ShooterUK: This article has been written on the assumption that the a9 is a superior camera. This is a very rash assumption and has not been proved. 20 fps does not make it the better pro sports camera - there are a lot of other considerations which need to be taken into account including weather sealing, durability and many others.

It's difficult to do nuance in headlines. The point I was trying to make is even *if* the a9 is better, that in itself wouldn't be enough to elbow in on the established brands just yet.

Link | Posted on Apr 25, 2017 at 17:18 UTC
In reply to:

Dave Oddie: Why does it matter how much it costs? At the end of the related article here:

https://www.dpreview.com/opinion/1937765842/sony-a9-why-being-better-might-not-be-enough

It says "Hansen, having already moved from Nikon to Canon..."

So this tells us pros switch systems occasionally. I doubt that was a cheap move but I also doubt Hansen paid for it himself either. There must have been some compelling reason to move from Nikon to Canon regardless of cost and if Sony can provide one to switch to them, then (some) pros will switch.

I think the cost of switching systems is far more relevant to amateurs like me than pros but even then we amateurs don't have to replace the entire lens lineup in one go and can phase the move as funds allow.

I believe she moved from an employer that used Nikon to one that used Canon.

Link | Posted on Apr 25, 2017 at 15:07 UTC
On article Sony a9: Why being better might not be enough (752 comments in total)
In reply to:

ttran88: I take it that Richard didn't get to go to New York and was left behind at the office... 😉

F.A.B

Link | Posted on Apr 24, 2017 at 23:59 UTC
On article Canon will add C-Log to the EOS 5D Mark IV for $99 (462 comments in total)
In reply to:

CreeDo: no video expert but does this mean a different codec to record this higher-dynamic-range video?

From my understanding, canon video uses an ancient inefficient mjpeg codec that creates monster filesizes, like 4 gigs per minute at full res. Basically each frame is a full jpeg file.

So if this is the video equivalent of raw vs. jpeg, does that mean these already huge filesizes will get like 10x bigger? Can this format record that extra data, when you consider the fact that a jpg still can't hold all the highlight and shadow data in a raw still?

Yes, it's a question of how it's processed before being compressed as a video file.

Raw video does exist (there's a CinemaDNG format and several high-end, multi-thousand-dollar cameras can shoot Raw), but it requires large amounts of super-fast storage and a lot of post-processing work, so it's currently primarily the domain of professional production teams/post production houses at present.

Link | Posted on Apr 24, 2017 at 18:43 UTC
On article Sony a9: Why being better might not be enough (752 comments in total)
In reply to:

Haim Hadar: @Richard - first Paragraph - "its able" should be "it's able" :-)

Sorry about that. Articles finished at the weekend don't always get the level of spit and polish they deserve.

Link | Posted on Apr 24, 2017 at 18:10 UTC
On article Sony a9: Why being better might not be enough (752 comments in total)
In reply to:

sibuzaru: At least from those guys perspective Sony is basically a single lens from being ready for the prime time then? Everything else but the 2.8/400 is present for e-mount

And I can already smell the Siver Award on the air

The structural reasons why pro shooters can't easily swap systems is not going to be a factor in our scoring.

Link | Posted on Apr 24, 2017 at 15:22 UTC
On article Sony a9 shooting experience: Here's why I'm impressed (781 comments in total)
In reply to:

redhed17: Do Professionals only exist in America, and maybe Canada to get the support Sony's eyes! :-/

The Pro Support scheme is also in several other countries. Germany, Switzerland, Austria, UK, Australia and Japan, off the top of my head (there should be a few more details in the article we publish tomorrow). However, we're US based so we only get direct access to Sony USA, which means it's their updates we mainly report.

Link | Posted on Apr 24, 2017 at 00:10 UTC
On article Sony a9 shooting experience: Here's why I'm impressed (781 comments in total)
In reply to:

sh10453: Nice to know that Sony has now made a sensible menu, and the user is no longer feeling lost. So this will no doubt percolate to other Sony cameras.

If the durability and weather sealing are not there, or not even close to the 1DX / D5, I am not sure who the target is for this very expensive camera.

Entoman - I do not believe it's the case that Sony semiconductor only sells older chips to other cameras companies. We've seen new chips turn up in other brand's cameras before Sony fairly regularly. Furthermore, it would be bad business for Sony's Semiconductor business if its clients thought they were getting second-rate products or unfair treatment (this has always been the line from Sony).

In a recent interview with IR, Sony seemed to say that its camera team sometimes commissions chips that include their own IP and it's these that only Sony cameras have. But, in principle, other customers could do the same. That's my understanding, anyway.

Link | Posted on Apr 23, 2017 at 18:01 UTC
On article Canon will add C-Log to the EOS 5D Mark IV for $99 (462 comments in total)
In reply to:

weixing: I'm sure think there will be someone out there that will open up a 5D4 and check what's the difference between a 5D4 with and without the C-Log upgrade... :-P

Their statement is: 'Due to the software architecture in the camera we need to connect and use our service tool to upgrade.'

Link | Posted on Apr 21, 2017 at 18:47 UTC
On article Canon will add C-Log to the EOS 5D Mark IV for $99 (462 comments in total)
In reply to:

weixing: I'm sure think there will be someone out there that will open up a 5D4 and check what's the difference between a 5D4 with and without the C-Log upgrade... :-P

Canon has just made a 'clarification.' There is no hardware change.

Link | Posted on Apr 21, 2017 at 18:20 UTC
Total: 4815, showing: 1 – 20
« First‹ Previous12345Next ›Last »