Richard Butler

Richard Butler

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

Comments

Total: 4395, showing: 1 – 20
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On article Lensrentals tears down the Nikon 105mm F1.4 (159 comments in total)
In reply to:

Photo_AK: Obviously Nikon calls the type of the focusing motor they've built into 105/1.4E a "Compact Silent Wave Motor" (instead of just "Silent Wave Motor):

https://www.nikonimgsupport.com/eu/BV_article?articleNo=000006503&lang=en_GB&setRedirect=true

Nikon EU might descrive it that way, but Mr Cicala was quoting Nikon US. Interestingly they have no amended the text he quoted.

Link | Posted on Dec 9, 2016 at 16:40 UTC
On article What is equivalence and why should I care? (2323 comments in total)
In reply to:

GrahamHO: An aperture number for a lens is obtained by dividing the diameter of the lens opening into the focal length. So for example a 100 mm focal length lens with a 50 mm diameter lens opening will be 100 divided by 50 = f2. This is basic optics and is NOT dependant on sensor size. So that lens will still be f2 regardless of the sensor size. It is exactly the same as post cropping a FF image to APSC size. The resulting photo does NOT get darker.
The sensor size does NOT affect the size of the aperture. Only the APPARENT depth of field changes. ( That is the zone of the subject that APPEARS to be in sharp focus )

Page two of the article makes exactly this point. Sensor size doesn't change the focal length or the aperture, but it changes the *effect* of both.

F-numbers give you a fairly good idea of how much light is being projected onto every square mm of the sensor and the ISO system ensures that this gives the same image brightness. No one disagrees with that.

However (for purposes of comparison) if you calculate what the F-number of the equivalent focal length would be, this *equivalent* F-number indicates depth of field, diffraction and gives a heavy hint about noise levels, because it defines the *total* amount of light available to the sensor during a given exposure.

Please take a look at page two of the article. It doesn't disagree with anything you've written in your first paragraph and it provides example photographs that illustrate the points it makes.

Link | Posted on Dec 9, 2016 at 16:27 UTC
On article 2016 Roundup: Interchangeable Lens Cameras $500-900 (340 comments in total)
In reply to:

Clint009: Because of the crazy price raised, the same camera change the quality? That is a non-sens!
( Sony A6000, A6300, A6500 the price up 100% and without lens! Crazy!)

The a6500 isn't an a6000 replacement, nor is it aimed at the same consumer.

A D3400 is $496 with lens but a D7200 is $996 body only at the same retailer (and that's an example where the basic model is new and the higher-end model is very old: the opposite situation to that seen with Sony).

Sony's naming scheme and similarity of styling make it less obvious than with Nikon, but there's no reason to think that a high-end enthusiast model would cost the same or similar amounts to a mass-market model.

Link | Posted on Dec 8, 2016 at 22:53 UTC
On article 2016 Roundup: $1200-2000 ILCs part 2: Full-Frame (338 comments in total)
In reply to:

sirhawkeye64: Why isn't the D750 in this category, rather than the 2000+ category. Yes, it was over $2000 when it was released, but now can be purchased for under $2000 (body only). I think it fits better here, or just include it here as well. The D610 is a great body, but it's also somewhat obsolete being based on technology that is 4-5 years old now.

Prices vary over time and do so at different rates in different countries. We could spend ages trying to track down the current prices in multiple markets and then work out categories based on an average market position, but the categorisation would be contentious and almost inevitably wrong, a few weeks later.

Instead we stick with launch list price because it shows where in the market the manufacturer expected it to sit and which models it was expected to compete with. It's not *perfect* but it's logically consistent.

If the price of one camera falls so much that you can choose it over less well equipped rivals, then we'd expect most readers to recognise that as a good deal.

Link | Posted on Dec 8, 2016 at 22:46 UTC
On article Striding Forth: Canon EOS 5D Mark IV Review (2084 comments in total)
In reply to:

Guido Bianchi: Hi Richatd, thanks for your previous answer about IQ. As the "full" mode is what I get really out of the camera, the Studio Scene of above show MKIV deliver less QI pictures than my old MKII. Can we at the end assume this? Thanks

I'm not sure that's the conclusion I'd draw, personally.

At ISO 6400, the Mark IV's shadows are less noisy, even when compared at 100% view. Compare with them scaled to the same size and the IV looks even cleaner.

Also - something that our standard studio scene can't show - the 5D IV's dynamic range will be better than the Mark II's. This means you'll be able to pull the shadows up more on your images before noise becomes a problem.

However, there is no single metric for 'IQ' so I can't be sure what aspects of image quality you're referring to, nor know what your personal preferences are.

To my eye, the Mark IV looks better.

Link | Posted on Dec 7, 2016 at 00:56 UTC
On article Striding Forth: Canon EOS 5D Mark IV Review (2084 comments in total)
In reply to:

Guido Bianchi: Just a question about the three different viewing sizes: full, comp, print. In order to compare on the road the files I really get from cameras, like fisically taking the same picture from both, should I take the "comp" view? Thanks

Yes, that's correct. The Image size: 'full' button will show the images at full size.

Also, the 5D IV will certainly be better than the other two in terms of Raw dynamic range, but that's not something that you can tell in our standard test scene.

Link | Posted on Dec 7, 2016 at 00:49 UTC
On article Action-packed: Sony a6500 First Impressions (557 comments in total)
In reply to:

PPierre: Regarding the touchscreen, people should complain, even if they buy the body : this clearly is something Sony can improve via firmware update, so the louder you get, the better it will be for you and for Sony, which might learn that customers don't want to drag focus points.

I remember Mark Radcliffe playing that Ben Folds Five tune pretty regularly on the graveyard shift and am likely to have it rattling 'round my head for most of the rest of the day.

Arguably the lyric is more logically consistent: it implies that both Mr Folds and his subject are in a battle about which of them is able to care less *than the other*. That's slightly distinct from a person *seemingly* claiming that they are capable of caring less than *they themselves* currently do.

Either way, hearing an American singer use an unfamiliar idiom is hardly unusual if you grow up in Britain - it doesn't make it common currency. Conversely, living in Seattle for a year or so has made me aware of how well observed (and intentionally colloquial) The Streets and Arctic Monkey's use of (British) English is.

Anyway, my point was that, though it sounds illogical if you're not used to it, it's commonly-enough used in the US (or parts thereof) to be acceptable.

Link | Posted on Dec 6, 2016 at 22:54 UTC
On article Action-packed: Sony a6500 First Impressions (557 comments in total)
In reply to:

Jefftan: "But shooting video this way is pretty annoying as you must wait until your subject is dead center to begin tracking"

Can't u move the camera and put the subject in the center?
Why annoying? don't understand

We're going to revise that paragraph. It seems engaging the Center Lock-On AF function does allow tap-to-track.

Link | Posted on Dec 6, 2016 at 01:18 UTC
On article Action-packed: Sony a6500 First Impressions (557 comments in total)
In reply to:

Jefftan: Very confusing, what is this really mean?

"This touch-to-focus ability extends to video mode and video focus speed can be adjusted to provide slow, smooth autofocus pulls. However, the camera's touch-and-track ability is limited to the older 'Center Lock-on AF' function, with 'Lock-on AF' area modes unavailable in video, meaning you'll have to re-engage the function every time you shoot video (because otherwise it becomes the only AF mode - and a poorly performing one at that - available with the touchscreen in stills)."

Which bit, specifically, is unclear?

For context, we explained the Sony AF system in most depth in the [a7R II review](https://www.dpreview.com/reviews/sony-alpha-7r-ii/11).

In stills mode, you can choose an **AF *area mode*** or a lock-on version of that area mode. The camera starts to track when you half-press the shutter.

Separate from this (and over-riding all AF area modes) is an AF *function* called 'Center Lock-On AF'. With this function engaged, the camera starts tracking either when you press the center button or when you tap the rear screen.

However, our experience is that the 'Center Lock-on AF' function is not as good as the regular AF system set to one of its lock-on area modes. However, only the Center lock-on function is available in video mode, so you constantly have to disengage it when you switch back to stills shooting.

Link | Posted on Dec 6, 2016 at 00:21 UTC
On article Action-packed: Sony a6500 First Impressions (557 comments in total)
In reply to:

Tim McClanahan: Isn't only ONE of the X-T2's slots UHS-II, and the other UHS-I?

Fujifilm's specs for the X-Pro2 say only slot 1 is UHS II, there's no such note about the T2.

Link | Posted on Dec 5, 2016 at 22:00 UTC
On article Action-packed: Sony a6500 First Impressions (557 comments in total)
In reply to:

Thorgrem: Overheating is the key feature of this Sony line since the NEX-5. Can someone tell me if the this one also has this unique Sony feature, it wouldn't be a real successor if it doesn't overheat.

It has a setting to stop the camera automatically turning off so early when overheating occurs. Not quite the same thing.

Link | Posted on Dec 5, 2016 at 20:22 UTC
On article Action-packed: Sony a6500 First Impressions (557 comments in total)
In reply to:

cavensar: Via cinema5d.com, An additional advanced feature which can be accessed via the menu is the ability to extend the 4K recording time. As we all know, the a6300 would have got warm and likely shut down while recording. Although this may still happen with the new a6500, you now have the possibility to delay this by accessing the menu, changing the Auto Power OFF Temperature to HIGH, and allowing the camera to get warmer… In fact, Sony recommends using a tripod as the camera can get really hot.

That's a fair point. The processor is a likely culprit, too. Several manufacturers I spoke to at Photokina were talking about pressing the body shell up against the back of the sensor to help dissipate heat but they could have been talking generally about 'chips' and merely pointing at the sensor.

Link | Posted on Dec 5, 2016 at 20:18 UTC
On article Action-packed: Sony a6500 First Impressions (557 comments in total)
In reply to:

PPierre: Regarding the touchscreen, people should complain, even if they buy the body : this clearly is something Sony can improve via firmware update, so the louder you get, the better it will be for you and for Sony, which might learn that customers don't want to drag focus points.

Ambulater - I didn't mean to suggest it's exclusively used that way in the US, just that it's used widely enough that it's broadly understood (at which point it's fine, regardless of what apparent literal meaning of the words).

Certainly it's used broadly enough that [British comedians feel it's fair game](https://www.youtube.com/watch?v=om7O0MFkmpw).

But your point about it probably being regional difference is interesting. I've found people from different parts of the US tend to use bring and take in opposite ways, which I find fascinating.

Link | Posted on Dec 5, 2016 at 20:12 UTC
On article Action-packed: Sony a6500 First Impressions (557 comments in total)
In reply to:

Rob: I'm dying to see how the IBIS performs for run & gun videos. I hope DPR's review will include a sample test video of just someone walking normally while recording a video with a focal length that's roughly 24~35mm (FF equivalent).

We'll try to make sure we include that.

Link | Posted on Dec 5, 2016 at 19:28 UTC
On article Action-packed: Sony a6500 First Impressions (557 comments in total)
In reply to:

Erick L: It would be nice if you added a yes/no under battery specs for "USB charging" and "USB powered". Thanks.

Good idea. I've added it.

Link | Posted on Dec 5, 2016 at 19:27 UTC
On article Action-packed: Sony a6500 First Impressions (557 comments in total)
In reply to:

broddesign: I am upgrading from a6000 to a6500. I don't care about video but doing a lot of street photography. Love my a6000 but really need an improvement for low light IQ and stabilization for my prime lenses. In your opinion - is this upgrade worth extra money?

Excuse my while I finish eating this tasty piece of crow.

It seems that the a7II does manage to underperform by so much that it allows the newer sensor in the a6300 and a6500 to overcome much/all of that difference.

Link | Posted on Dec 5, 2016 at 19:19 UTC
On article Action-packed: Sony a6500 First Impressions (557 comments in total)
In reply to:

cavensar: Via cinema5d.com, An additional advanced feature which can be accessed via the menu is the ability to extend the 4K recording time. As we all know, the a6300 would have got warm and likely shut down while recording. Although this may still happen with the new a6500, you now have the possibility to delay this by accessing the menu, changing the Auto Power OFF Temperature to HIGH, and allowing the camera to get warmer… In fact, Sony recommends using a tripod as the camera can get really hot.

That's the 'Auto Pwr Off Temp (Std/High)' menu item called out on page 4 of this article.

Without more testing, we can't know whether it extends the a6500's recording beyond that of the a6300 or merely allows it to keep up with the a6300 (since the a6500's chip can't use the back of the camera body as a heat sync, as it's in an IS mechanism).

Link | Posted on Dec 5, 2016 at 19:15 UTC
On article Action-packed: Sony a6500 First Impressions (557 comments in total)
In reply to:

ObelixCMM: Page 1 comparison table list 4K crop on Sony X1.23 and Fuji X1.17.
I assume Sony crop is from photo (3;2) to video (16:9) aspect ratio crop, this number is missing for XT-2. This makes it look like Sony got larger crop factor.

No. Those are the crop factors relative to the full width of the sensor, so are 16:9 compared with 16:9.

The table is correct: the Sonys shoot 24 and 25p using their full sensor width but, in 30p mode, crop in by 1.23x.

![a6500](https://www.dpreview.com/files/p/E~TS250x0~articles/6717953325/Video-Crops/4k30Crop.jpeg)

The X-T2 uses a 1.17x crop for all 4K frame rates:

![X-T2](https://www.dpreview.com/files/p/E~TS250x0~articles/1061973559/Video/Crop_Comparison.jpeg)

Link | Posted on Dec 5, 2016 at 18:54 UTC
On article Action-packed: Sony a6500 First Impressions (557 comments in total)
In reply to:

ObelixCMM: Sony A6300 body only price is $998.00 not $1,100.00

Quite right. My comments about 'for $400 extra' make more sense if the difference is actually $400.

Link | Posted on Dec 5, 2016 at 18:44 UTC
On article Action-packed: Sony a6500 First Impressions (557 comments in total)
In reply to:

zeratulmrye: A6500 has UHS II? You sure?

Good catch. Sorry about that, I've corrected the error.

Link | Posted on Dec 5, 2016 at 18:01 UTC
Total: 4395, showing: 1 – 20
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