Richard Butler

Richard Butler

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

Comments

Total: 4520, showing: 41 – 60
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On article Panasonic Lumix DC-GH5 sample footage (80 comments in total)
In reply to:

BJN: Choppy pan, what shutter speed?

At the start? 1/50th of a second. Don't discount the possibility of poor technique and a less-than-perfect tripod head.

Link | Posted on Feb 13, 2017 at 23:51 UTC
On article Panasonic Lumix DC-GH5 sample footage (80 comments in total)
In reply to:

Dhonchak: Hey ! amazing footage , i have some question and it will be very helpful if you could help me.

Q.1 - How is the autofocus during the video compared to g85 and especially canon 80d. is it good enough to be used as a daily vlogging camera.

Q.2 - what is the crop factor when dual IS is turned on ( in both 1080p and 4k)

Q.3 - will it vignette with a sigma 18-35 + speedbooster XL without IS on(since it doesnt crop without IS on)?

Q-4 - when will the V90 cards be available to allow for 400mbps 4k internal recording?

Panther Fan is correct: there's an additional crop when you add E stabilization. It's a small crop but I'll measure it when I'm back in the office, tomorrow.

Link | Posted on Feb 13, 2017 at 21:43 UTC
On article Panasonic Lumix DC-GH5 sample footage (80 comments in total)
In reply to:

Dhonchak: Hey ! amazing footage , i have some question and it will be very helpful if you could help me.

Q.1 - How is the autofocus during the video compared to g85 and especially canon 80d. is it good enough to be used as a daily vlogging camera.

Q.2 - what is the crop factor when dual IS is turned on ( in both 1080p and 4k)

Q.3 - will it vignette with a sigma 18-35 + speedbooster XL without IS on(since it doesnt crop without IS on)?

Q-4 - when will the V90 cards be available to allow for 400mbps 4k internal recording?

Q2 - I'm not seeing any crop when I turn on Dual IS (I'll check more, when I get a moment.

Q4 - I think V90 cards have been announced but the furmware bringing 400 mbps output isn't coming until 'summer.'

Link | Posted on Feb 13, 2017 at 21:05 UTC
On article Panasonic Lumix DC-GH5 sample footage (80 comments in total)
In reply to:

John Koch: DPR: please expand your notes or explanations. Whoever took the shots obviously knew the camera far better than any green box-opener. Was a Panasonic crew responsible? Were all shots hand-held? Which lens? Dual IBIS-OIS? How was the (perfect!) audio recorded? A separate recorder altogether? Was an external shotgun mic suspended over the speaker? Or was there an mini mic hidden under his cap? Ambient light only? Grading in post? What LUT?

It was all hand-held and almost everything was shot with the 12-60mm F2.8-4.0, meaning there was Dual IS.

Ambient lighting only and minimal grading. One camera was shot in Cinelike D, so it was mainly a case of pulling the blacks down a fraction. The close-up drift around the three Peat Week bottles at the end may be the 12mm F1.4 and was color graded with a single by-eye colour correction to stop the change of White Balance being too jarring.

Let me know if you have any other questions.

Link | Posted on Feb 13, 2017 at 19:58 UTC
In reply to:

darngooddesign: Isn't this the sensor they are working on with Fujifilm?

Dr_Jon: *this* is also a CMOS sensor with an organic layer on top, allowing global shutter, it just happens to be sensitive to both visible and NIR light.

Link | Posted on Feb 10, 2017 at 20:59 UTC
On article What is equivalence and why should I care? (2364 comments in total)
In reply to:

amblepath: I fall into the more depth of field is an advantage most of the time camp. I know it's hard to accept for some that less depth of field to many is a con and yet it truly is. With m4/3 for instance you get to keep the quick shutter speed of the widest aperture and still keep vital areas in focus. Software also is getting better and better for blurring backgrounds if you need more. This leaves high ISO noise as the only con for me from smaller sensors like m4/3 and APS-C. So if the best in high ISO is your need then it's full frame for you. Otherwise remember more depth of field for your average photographer is often, possibly even mostly a pro not a con.

If you shoot at, say, F5.6 on a Micro Four Thirds camera, then there's no reason you can't shoot at F11 and the same shutter speed on a full frame camera. You need to raise the ISO but, since you're capturing the same amount of total light, the two images will look very similar, unless there's a radical difference in sensor performance.

The only point at which one system has 'more depth of field' is once you've stopped the larger sensor camera down to its minimum aperture. And that usually means getting well into diffraction-limited territory.

Link | Posted on Feb 10, 2017 at 20:57 UTC
In reply to:

phips243: Why isn't Fujifilm mentioned? It's pretty clear that the organic film was developed by them...

The two companies were working together at some point. The absence of any mention in Panasonic's press release (or any press release from Fujifilm) suggests this particular piece of work isn't direct fruit of that collaboration (perhaps because the breakthrough here is the control of the two layers, not the layers themselves).

Link | Posted on Feb 9, 2017 at 21:41 UTC
In reply to:

EskeRahn: To be picky on the drawing. Should that not have been the RED micro lens to get NIR through and not the green one?

That would depend on how much non-visible light each filter blocks. If they're well designed, none of the filters would necessarily block any NIR light.

Link | Posted on Feb 9, 2017 at 21:38 UTC
On article What is equivalence and why should I care? (2364 comments in total)
In reply to:

wondrouslightdotcom: A lot has been said about this being a shortcoming of smaller sensors but, while this is valid for portrait photographers who want blurred backgrounds, it is just the opposite for subjects such as landscapes and close-ups where DOF is never enough (somewhat ironically, two currently fashionable issues in photography are bokeh and focus stacking). A third question is: are there any additional pros and cons of different sensor sizes for my kind of photography? (portability is the 1st one that comes to mind). And a fourth, fundamental question is: what influence does "equivalence" have on the overall quality of one's photographic output (i.e.: a background that is more or less blurred)? I am not going to make many friends with this statement but for many photographers not so much. A lot of it is due to one's creativity and mastership of the equipment, exposure, post-processing and publishing.

As you suggest, equivalence is primarily a tool for understanding the effect of changing sensor size. But the performance envelope of a system is defined by sensor + lenses.

In terms of shallow depth-of-field, an APS-C sensor with an F1.2 lens in front of it will match a full frame sensor with an F1.8 lens with the same field of view. (There are DR issues in bright light, but that's a separate issue). If you can get a lens brighter than F1.8, then everything from there on will be territory that only the larger sensor camera can access.

Equally, when it comes to deep depth of field, there's no inherent advantage to a small sensor. Stop down the lens on the larger system to an equivalent aperture and you'll get a very similar result (in terms of depth-of-field and, assuming similar sensor performance, noise). It's telling that APS-C and Micro Four Thirds lenses tend to have minimum aperture values of F22 while Full Frame lenses go to F32: they have similar levels of diffraction

Link | Posted on Feb 9, 2017 at 01:36 UTC
In reply to:

Tariag: Samples! We want samples! :)

I don't think we're able to shoot with these ones but rest assured we'll get shooting the moment samples arrive.

Link | Posted on Feb 8, 2017 at 21:24 UTC
In reply to:

davearthurs: In manual focus mode - if you turn off the camera and move the focus ring to a set position and turn it back on again does it remember this new position? (doesn't work with X100F etc., but I believe does work with XPro 2) - be a handy improvement as I mainly just use manual focus with a plastic focus tab thing on the X100T. Not ideal but and improvement over the iffy auto focus I find.

I'm sorry, it seems I've managed to mis-read the original post, every time I've looked at it.

The camera remembers (approximately), the position it was in when turned off. It doesn't reset. However, neither to does it accept any input while the camera is turned off (which suggests the camera's focus ring sensor detects relative movements, not absolute positions).

Link | Posted on Feb 6, 2017 at 23:52 UTC
On article Upwardly mobile: Sony a6300 Review (2159 comments in total)
In reply to:

rana 101: Hello,
This is really important. For this review of a6300 was the camera tested with the kit lens or any other lens ?

We test with a variety of lenses. The test scene is shot with sharp, prime lenses but we spend time shooting with the kit zooms, too.

The Sony kit lens isn't optically great but it's very small: that's the trade-off you make.

Link | Posted on Feb 4, 2017 at 18:49 UTC
In reply to:

rrodgers: The DPR posting above mentions that there will be a forthcoming comparison of several leading Raw converters for X-Trans cameras. When do you anticipate that this will be published. I am dure many X-Trans users will be keen to see the results.

It's all a question of when I have time to write it. I spent a day shooting at our local arboretum to get some shots with complex green texture, specifically for the test (I'll also include a portrait and a high ISO sample), but there are a lot of cameras arriving at the moment, so it's unclear when I'll have time to do it.

I'm hoping it'll be quicker than my article about DR modes, which I think had a three or four year lag between me first planning it and actually getting the chance to write it.

Link | Posted on Feb 2, 2017 at 18:41 UTC
On article Sony SLT a99 II Review (1507 comments in total)
In reply to:

TheEmrys: "The biggest mistake with this new menu system, especially with the daunting growth of settings, is the lack of a customizable quick menu to save frequently changed settings"

Isn't this what the FN menu button does,described just below this quote?

"This main menu is used alongside a user-configurable Fn menu. This allows up to twelve options to be arranged in up to two rows of icons, for semi-fast access to features you access or settings you change semi-regularly."

This isn't my review, so it's not me you need to appeal to.

However, most modern cameras offer three levels of access: direct controls and buttons, some kind of Fn menu for less-used settings and, finally, a My Menu tab so that you can quickly find those settings you change only semi-frequently.

Personally I've found I can completely fill the Sony Fn menu if I'm setting the camera up for both stills and video use (though that's less likely to be an issue for me if there are 11 buttons to customize), but there are still likely to be settings that you set occasionally, can't assign to the Fn menu but that you don't want to have to dig down the back of the menu system to find.

Link | Posted on Feb 1, 2017 at 18:38 UTC
In reply to:

zodiacfml: They have to put away the X-trans sensor already. I would like to see that DR improving sensor than X-trans.

I'm not sure I understand your point. There's no reason DR from an X-Trans sensor has to be significantly different from a Bayer sensor (it's primarily a hardware characteristic and the colour filter array doesn't change that).

(That said, there is a small DR loss, compared to the Sony a6300 and 6500 because Fujifilm appears to use a different minimum level of amplification, but that's not an X-Trans issue, *per se*)

Link | Posted on Feb 1, 2017 at 18:21 UTC
In reply to:

marc petzold: Wow, now that's a camera what i call "complicated" to use. It must have been very expensive back into it's heyday.

LeCoultre knows a thing or two about complications.

Link | Posted on Jan 31, 2017 at 19:17 UTC
On article Fujifilm X100F pre-production sample gallery (233 comments in total)
In reply to:

Bas Hamstra: Fantastic colors and super pop. And these are OOC jpegs? Wow...!

All gallery images on dpreview are OOC JPEGs unless otherwise specified.

Link | Posted on Jan 31, 2017 at 19:11 UTC
On article Sony SLT a99 II Review (1507 comments in total)
In reply to:

TheEmrys: "The biggest mistake with this new menu system, especially with the daunting growth of settings, is the lack of a customizable quick menu to save frequently changed settings"

Isn't this what the FN menu button does,described just below this quote?

"This main menu is used alongside a user-configurable Fn menu. This allows up to twelve options to be arranged in up to two rows of icons, for semi-fast access to features you access or settings you change semi-regularly."

I've re-worked that section to make clear that we meant it would benefit from a 'my menu' style tab. I agree that the text made it sound like we were calling for something that already exists.

Link | Posted on Jan 31, 2017 at 18:21 UTC
In reply to:

Kaso: (Panel 4) "This means that it's still a increasingly soft when shot wide-open, close-up ..."

a increasingly soft? a bit soft? a little soft?

Kaso. Well spotted. I've corrected it.

Link | Posted on Jan 31, 2017 at 06:15 UTC
In reply to:

Ebrahim Saadawi: So say, A Canon 5DsR + Sigma 50mm ART versus thr GFX with the 63mm lens. Side by side. How do you think both will differ in the image produced?

Both at 50mp, large chips, RAW, sharp equivalent lenses, same FOV & DOF, Both with great colour science, etc...

I think the most visible difference will be at the 5DsR lack of ability of pushing shadows as well as the Sony Chip. But we don't do that so what else, anything inherent to MF that cannot be replicated with a FF chip?

The difference based purely on size would be 2/3EV, which is near-identical to the difference between a Four Thirds and an APS-C sized sensor.

Or, to put it another way: essentially half the difference between APS-C and Full Frame.

Link | Posted on Jan 30, 2017 at 20:45 UTC
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