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Posts Tagged ‘Class’

Film Fridays: Asahi Pentax Spotmatic F Review – a class act

02 Oct

About 10 years ago, Bob Janes decided it was high time to track down some of the dream cameras of his youth. One of the cameras in particular, the Pentax Spotmatic F, had left an important impression on him, early in his photographic journey.

So when one popped up locally on Ebay for a mere £16, he grabbed it, no questions asked. It turned to be in pristine mechanical condition. Now, 41 years after first laying eyes, Bob has finally had the chance to put the Spotmatic F properly through its paces. Read his long waited review (courtesy of our friends at 35mmc):

Read: Asahi Pentax Spotmatic F Review –
a class act

About Film Fridays: We recently launched an analog forum and in a continuing effort to promote the fun of the medium, we’ll be sharing film-related content on Fridays, including articles from our friends at KosmoFoto and 35mmc.

Articles: Digital Photography Review (dpreview.com)

 
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How Fujifilm could make its next X-H series camera the class leader for video

11 Jun

Introduction

The X-H1 appeared to be the start of a more video-centric line of cameras from Fujifilm. However, we’ve subsequently seen the release the X-T3 and X-T4, both of which provide similar or better levels of video performance.

Does the X-H series still have a future? In a recent interview with DPReview, Toshihisa Iida, General Manager of Fujifilm’s Optical Device and Electronic Imaging Products Division, confirmed that the company plans to keep the X-H line, stating only that ‘the concept will be very different to the X-T series.’

Assuming Fujifilm intends to keep the series video-focused, we decided to contemplate what features would be required to make the X-H2 the undisputed class-leading camera for video. The APS-C/Super35 format remains very popular among videographers for a variety of reasons: fast readout rates, less rolling shutter and relatively compact lenses among them.

Video scopes

Recent Fujifilm cameras delivered great video quality, but lacked important exposure tools designed for videographers. Histograms are great, but we’d like to see waveforms and vectorscopes.

Waveforms help visualize exposure across the entire frame. They tell you how many pixels have a given brightness value as well as where those pixels exist in the image, useful for judging exposure in a specific area of the frame, such as on a subject’s face. Vectorscopes can be used to assess hue and saturation, particularly important given that most video isn’t recorded in Raw format.

To really impress, Fujifilm could even add false-color overlays, which make it easy to quickly judge exposure anywhere in the frame at a glance. Equally important is a workflow that makes video scopes easy to use – accessible at the tap of a button for evaluating exposure.

Video-centric exposure settings

Exposure settings used for photography work fine for video, but they don’t always represent the best workflow for videographers.

We’d like to see an option to set shutter angle as an alternative to shutter speed. Of course, you can always set your shutter speed to replicate a 180° shutter, but each time you switch frame rates you’ll have to update the shutter speed as well. In contrast, a constant shutter angle means you’ll always get the appropriate shutter speed for the frame rate at which you’re shooting. (The ability to lock shutter angle to prevent accidental changes would also be welcome.)

A bonus would be explicit dual gain states, similar to what’s found on the Panasonic GH5S and S1H. This would allow users to expressly determine whether they want to prioritize the widest dynamic range or use the higher-gain step to reduce shadow noise at the expense of some dynamic range. It might also clear up confusion around ISO values that may appear to change when using different modes (e.g. Standard vs Log gamma) even when the underlying amplification remains the same.

A full suite of ports

Video work often requires cameras to be rigged with external accessories, so connection points are crucial.

We don’t expect the X-H2 to embrace the SDI connectors commonly found on pro video cameras, but do hope for a full size HDMI port. Standard HDMI cables are easy to find, and a full size port is going to hold up better over time than the small micro HDMI ports found on other Fujifilm bodies.

We’d also like to see dedicated 3.5mm microphone and headphone jacks. Recent Fujifilm models have relied on a 3.5mm-to-USB-C adapter for headphones, but on a video-centric camera we’d prefer a standard headphone port. Not only does it eliminate a potential point of failure, but we have some other high hopes for that USB-C port.

XLR microphone adapter

In many cases, a simple hot shoe mic with a 3.5mm connector to the camera is just what you need, but what if you want to record high quality audio, possibly from a couple different sources such as lavalier mics, straight into camera? For that, we may want XLR connections.

Panasonic provides a solution to this in the form of its XLR1 adapter (pictured above), which sits in the camera’s hot shoe and provides two XLR inputs with independent controls. Similarly, Sony has its XLR-KTM adapter for mirrorless cameras. It would be a strong statement to videographers if Fujifilm were to introduce a similar product alongside a future X-H2.

Improved video codec

When introduced, the X-H1 set a new bar for video on a Fujifilm camera, but its maximum resolution of 4K/30p, along with 4:2:0 8-bit color and reliance on the H.264 codec, is dated by today’s standards. In contrast, the newer X-T4 shoots internally up to 4K/30p All-I at 400 Mbps, with 4:2:0 10-bit color, using the H.265 codec. (And even goes to 4K/60p, albeit at a lower 200 Mbps.)

At a minimum, we’re hoping to see the X-H2 capture both 4K/60p and 6K/30p internally, with 4:2:2 10-bit color, a high bit rate, and using the H.265 codec.

There have even been suggestions that Fujiflm might use a rumored 8K-capable, 43MP Sony sensor in the X-H2 that’s capable of capturing video at high bit rates. Is it a stretch? It might be, but if true it would be a major differentiator between the X-H2 and Fujifilm’s other models, not to mention the rest of the APS-C mirrorless camera market.

Raw video options

Thanks to recent firmware updates, some mirrorless cameras support ProRes Raw recording when paired with a Atomos recorder. We would expect to see that on the X-H2 as well, but for truly class leading performance we’d like to see Fujifilm go further.

The often overlooked implication of Raw video is that output resolution should match sensor resolution, otherwise it’s necessary to line or column skip to capture a Bayer-like array of data (as occurs on the Nikon Z6). Raw video with an approximate resolution of 6K would closely match the 24MP or 26MP sensors used on recent Fujifilm bodies. If the rumors of a higher resolution, 43MP sensor turn out to be true, such an approach might be required.

Also, remember the USB-C port we didn’t want to use for headphones? How about using it to write Raw video directly to an attached SSD, similar to the Blackmagic Pocket Cinema Camera or Sigma fp? Design the body with a means to attach it securely and it would fit on a gimbal without fussy rigging.

If Fujifilm wanted to go all-in on video, it could even offer internal Raw recording with selectable compression, similar to the Blackmagic camera. It also raises an interesting question: whether it would make sense to use Apple ProRes Raw or BlackmagicRaw. A popular camera with internal Raw recording could tip the industry in one direction or another.

Improved autofocus

Though videographers often prefer to use manual focus, autofocus is becoming increasingly important. Recent Fujifilm models have demonstrated impressive autofocus capabilities, though important gaps still exist.

In particular, as improved as Fujifilm’s subject tracking is, there’s still no subject tracking in video. To achieve class-leading status, that’s a pretty important feature we’d want to see added. Additionally, the AF interface could use a revamp; the addition of a tap-to-track feature, similar to the the one found on many Canon cameras, would make the system even more useful.

Displays

It’s probably a no-brainer that we’d like to see a fully articulating screen on a video-focused camera. Fortunately, Fujifilm is already doing this on models like the X-T4 and X-A7, so it shouldn’t be a heavy lift to do it on the X-H2. What we’d really like to see is an even more innovative design, maybe along the lines of the one found on the Panasonic S1H, which puts the screen’s articulating hinge on a tilting platform. This allows it to tilt out and avoid interfering with the ports on the side of the camera.

Another upgrade we’d vote for is a move from the 3.69M dot panel found on the X-T4’s EVF to the newer 5.76M dot panel used by several other cameras. The extra resolution would be especially helpful when using tools like video scopes with the camera to your eye.

Improved 5-axis IBIS

Fujifilm introduced in-body image stabilization on the X-H1. While effective for stills, it had some quirks when shooting video. The system had a tendency to overcorrect for intentional movement, and when it hit the limit of its travel would reset in a clumsy way. Fortunately, Fujifilm was able to improve it through firmware.

The 5-axis system in the X-T4 can stabilize video effectively, particularly using its ‘Boost IS’ mode, which provides the maximum correction possible to compensate against any camera movements when taking a static a shot; it works well and can be tripod-like. However, the system still has difficulty distinguishing between intentional and unintentional camera movement, such as pans, resulting in hesitation or jerky video. It’s also noticeably less effective than the sub-full frame video leader, the Panasonic GH5.

We’d like to see a more refined image stabilization algorithm in a future X-H2 for best-in-class handheld video shooting.

Separate menus and settings for stills and video

Separate menus and settings for stills and video is another one of those problems that’s mostly been solved on the X-T4. It even has separate ‘My Menu’ tabs for stills and video. Fujifilm, just port this to the X-H2 and videographers will thank you.

Oh, and throw in a hardware switch between video and stills modes, like the X-T4, while you’re at it. Because it just makes sense.

Unlimited recording time

Wouldn’t it be great if the X-H2 had unlimited recording time?

It would be even greater if you could record continuously while powering the camera via the USB-C port.

Eterna in-camera LUT display

When shooting Log video, Fujifilm’s F-Log View Assist function lets users apply an in-camera F-Log to Rec.709 LUT, which displays an approximation of graded footage while recording in Log.

It would be great to see Fujifilm extend this functionality to include its Eterna film profile. Eterna has proved to be popular among videographers, and Fujifilm has a lovely F-Log to Eterna LUT. Making it available in the View Assist function would be a great addition to the camera.

Anamorphic lens support

Admittedly, we’re getting into niche stuff here. Most people probably won’t be shooting anamorphic lenses, so this is probably a nice-to-have rather than an essential feature. However, if Fujifilm wants to establish itself as a class leader in video, it’s an opportunity.

What does anamorphic support entail? Primarily, the ability to display a desqueezed image in the viewfinder while continuing to record a squeezed anamorphic image in-camera. Anamorphic support would ideally include full-sensor desqueeze, allowing one to use the entire surface area of the sensor when shooting video.

If the camera’s image stabilization could take anamorphic squeeze into account, it would join the Panasonic GH5 and S1H as the only stabilized platforms for anamorphic shooting. As most anamorphics are built for Super35 coverage, this would be a standout feature.

Conclusion

We don’t expect to see all these features on a new X-H2: it’s a pretty big list, and even we’ll admit that some of the items are a bit of a stretch. However, if Fujifilm is serious about putting a stake in the ground with video enthusiasts, this would be a heck of a way to do it.

Of course, it’s entirely possible that Fujifilm has a completely different vision for the X-H series in mind. As we mentioned, there are rumors that a future X-H2 might use a higher resolution (43MP?) sensor. This would allow Fujifilm to significantly differentiate the X-H2 from the rest of its product line for still photography as well, similar to the Nikon Z6/Z7 or Panasonic S1/S1R models. That it might also allow for 8K video would be a significant upside for video enthusiasts.

Anything’s possible, but since the X-H1 had a video bent our gut tells us that, whatever form the camera takes, video will be a significant focus. We’re holding our breath as we wait to find out.

Articles: Digital Photography Review (dpreview.com)

 
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Sony a9 ‘real-time tracking’ update makes it the highest scoring camera in its class

03 Jul

We were already impressed with the Sony a9 when we reviewed it, giving it a score that put it on par with its two very capable rivals, the Nikon D5 and the Canon EOS-1DX II. In April this year, nearly two years after the camera’s launch, Sony introduced a significant firmware update that largely revamped the autofocus system of the camera, adding a new ‘real-time tracking’ AF mode that works seamlessly with face and eye detection. Sony also updated face and eye detection algorithms by using machine learning to understand human subjects and features more accurately.

Gold Award

90%
Overall score

We’ve spent some time shooting with the updated a9 in a variety of situations, and have previously written and in-depth look into what the new AF system brings. After further testing, we’ve re-scored the a9 with the boosted autofocus in mind, and it brings the score up to 90% (from 89%). This makes the a9 the highest-scoring camera in its class, out-ranking the Nikon D5 and Canon EOS-1D X II.

The increased score reflects the precision of the updated a9’s subject tracking system, as well as its ease-of-use that makes it valuable for nearly all types of photography. Click ‘Read our review’ above to jump to our full review (originally published in 2017), and read on for a description of the new real-time tracking mode, with some examples and videos of the system in use.


Real-time tracking in use

‘Real-time tracking’ refers to the ability of the a9 (and a6400) to understand the subject you initiated focus on, and track it in three dimensions, much like 3D Tracking on Nikon DSLRs, and the respective subject tracking modes on various mirrorless cameras. What sets the a9’s system apart are both its performance (we found it to reliable enough to be useful for portrait, event, candid, sports and even landscape photography), and its ease-of-use.

To pick a target, you can simply reframe your composition to place your AF point over your subject, half-press the shutter, and real-time tracking will collect color, brightness, pattern, distance, face and eye information about your subject so it can use it to keep track of your subject.

It’s robust enough that it will even, again reliably, switch in and out of Eye AF as necessary if a face or eye is detected on the subject you are tracking, as you can see in the video above.* Collectively, this means you can concentrate on the composition and the moment. There is no longer a need to focus (pun intended) on keeping your AF point over your subject, which for years has constrained composition and made it difficult to maintain focus on erratic subjects.

In practice, the system excels. While many professional sports photographers that know their sport, and can anticipate the action, have successfully used Single Point or Zone AF for years, real-time tracking can help both the amateur and the pro achieve potentially better results. First, it frees up the photographer to compose freely, as composition is no longer constrained by having to keep an AF point over the subject. But perhaps more importantly, not having to keep a fixed AF point or zone over a fast moving subject is a boon when it comes to fast, erratic subjects shot using long telephoto lenses, where framing is increasingly difficult. The sequences below were shot with the 600mm F4 GM lens at a soccer match (click on any thumbnail to launch the gallery):

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Unpredictable motion combined with a 600mm focal length makes it difficult to keep a fixed AF area over your subject. Here, real-time tracking tracked our players even as others passed in front of them, switching in and out of Eye AF, and reverting to generic subject tracking, as necessary so as to not lose the original subject. Photos by Barney Britton

And below, despite erratic motion, changing directions, and nearby similarly-dressed players, the camera tracks the original player in both instances. In the first sequence we targeted the player in red (Everton); in the second, the player in silver (Ivan). Only one or two shots in the sequence are slightly misfocused.

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Away from sports and burst photography, we found the performance of Sony’s ‘real-time tracking’ to be beneficial for even more stationary subjects, as it frees you up to try different poses and framings quickly, as we’ve done below.

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Most of the 20 shots above were captured in under 19 seconds, without ever letting off the AF-ON button. The camera never lost our model, and the seamless transitioning between Eye AF and general subject tracking allowed the AF system to remain on our subject throughout the series. By not having to think about focus, you can work faster, and come home with a greater variety of images to choose from.


*This video demonstrates ‘real-time tracking’ on the a6400, but the principle is the same on the a9.

Articles: Digital Photography Review (dpreview.com)

 
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Science project for class 7 pdf

10 Sep

I mentioned how I planned to talk about bridges and bicycles and so on, the mass media face a number of pressures that can prevent them from accurately depicting competing scientific claims in terms of their credibility within the scientific community as a whole. And maybe even science project for class 7 pdf, he made […]
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Front-runner: Nikon D500 leads class in studio and dynamic range tests

27 Apr

At long last, a Nikon D500 has found its way into our office (thank you LensRentals!). We put the camera straight into our studio to find out what the long-awaited successor to the D300 is capable of. It’s only the beginning of course, but you can see for yourself below what the D500’s full ISO range looks like in our studio scene (cranked all the way up to ISO 1,638,400) and on the next page you’ll see the results of our dynamic range testing. There’s good news in store – in our initial testing the D500’s performance is class-leading with respect to low light (high ISO) noise performance, as well as dynamic range. In fact, it’s essentially ISO invariant, taking after Nikon’s own D7200 rather than the D5.

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Articles: Digital Photography Review (dpreview.com)

 
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Class 10 200GB microSD card on the way from Lexar

25 Mar

Memory manufacturer Lexar has announced a micro SDXC card with a capacity of 200GB and read speeds of up to 95MB per second. The company says the card is aimed at action cam users as well as owners of tablets and smartphones, and is suitable for both HD and 4K video recording. Lexar claims the 200GB capacity can hold over 15 hours of HD video footage, and that the UHS-1 card has a transfer speed rating of 633x.

The card comes packaged with a USB 3.0 card reader, a copy of the company’s Image Rescue recovery software, and a ‘limited lifetime warranty’. It will cost $ 129.99. For more details see the Lexar website.


Press release:

Lexar Announces 200GB High-Performance 633x microSDXC UHS-I Card

New High-Capacity Card Enables High-Speed Capture and Transfer of Multimedia Content

Key Messages:
* Delivers read transfer speeds up to  95MB per second 633x *
* Enables users to capture more than 17 hours of HD video; 33,000 photos; or 28,000 songs **
* Includes a USB 3.0 reader for high-speed card-to-computer transfer

Milpitas, CA, March 22, 2016 – Lexar, a leading global brand of flash memory products, today announced the new 200GB Lexar® High-Performance microSDXC™ UHS-I memory card. Designed for sports camcorders, tablets, and smartphones, the UHS-I, U1 microSDXC card has read transfer speeds up to  95MB per second (633x)* and can capture up to 17 hours of 4K and Full HD video; 33,000 photos; or 28,000 songs.**

“Professional and everyday photographers are now more passionate about shooting high-quality video, on everything from digital SLRs to sports and aerial cameras, said Steffi Ho, product marketing manager, Lexar. “With the Lexar 200GB microSDXC UHS-I card, photographers can continue to capture and store large amounts of content on the go, without having to worry about running out of space.”

The 200GB Lexar High-Performance 633x microSDXC UHS-I card comes with a USB 3.0 reader, which allows for high-speed file transfer of photos and videos from the card to a PC or Mac®. The reader is also backwards compatible with USB 2.0 ports and comes with a one-year limited warranty.

The 200GB Lexar High-Performance 633x microSDXC UHS-I card comes with a limited lifetime warranty and includes a lifetime copy of Image Rescue® software. Additionally, all Lexar product designs undergo extensive testing in the Lexar Quality Labs to validate performance, quality, compatibility, and reliability with more than 1,100 digital devices. The new card is currently available for purchase with an MSRP of $ 129.99. For more information about Lexar products, visit www.lexar.com.

Articles: Digital Photography Review (dpreview.com)

 
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Class Is In Session! Turn Photos Into School Supplies

13 Aug

Can it be? Summer’s almost over? It feels like it just started.

Guess that means it’s time to switch sunbathing for school supplies. But hey, that’s not a bad thing. Really!

Just check out our list of DIY school supplies that you can make out of your very own photos and you’ll see what we mean.

Now go get crafty and make all your classmates jelly!
(…)
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Photos Into School Supplies (445 words)


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In a class of its own: Samsung NX1 review

10 Apr

Samsung’s NX1 seemed to offer pretty much every feature possible when we were first briefed about it last year. Its 28.2MP APS-C BSI sensor, hybrid AF system, 4K video and 15 fps continuous shooting with AF have continued to impress us throughout our extensive testing. Can such an innovative on-paper feature set make it a serious competitor to well-established brands in the DSLR and mirrorless worlds? Read review

Articles: Digital Photography Review (dpreview.com)

 
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Toshiba unveils UHS-II Class 3 microSD memory cards

20 Apr

toshiba-uhs-ii.jpg

Toshiba has announced the industry’s first microSD memory cards to comply with the UHS-II standard. Also being UHS Speed Class 3 (U3) enabled will allow the new cards, available in 64GB and 32GB capacities, to capture 4K video at constant minimum write speeds of 30MB/s. The 64GB cards offer a maximum read speed of 260MB/s and a maximum write speed of 240MB/s. The 32GB cards have a maximum read speed of 145MB/s and maximum write speed of 130MB/s. Learn more

News: Digital Photography Review (dpreview.com)

 
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Transcend UHS-I Class 3 memory cards support 4K video capture

04 Apr

gb_csuFlashCard_intro_SDU3X_01_0314.jpg

Transcend has announced SDXC/SDHC UHS-I Class 3 (U3) rated memory cards with read and write speeds of up to 95MB/s and 85MB/s. The Transcend cards meet requirements to give smooth video capture on new 4K cameras such as the Sony FDR-AX100, Panasonic Lumix GH4 and Canon EOS C500. Featuring 32GB to 128GB capacities, the new cards will available by mid-April in Japan and soon after in the U.S. Learn more

News: Digital Photography Review (dpreview.com)

 
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