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Nikon D850: Best full-frame DSLR now in town (Tech Review)

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Nikon D850
Nikon D850

New Delhi, Oct 30: Japanese major Nikon, which is celebrating 100 years in business this year, has unveiled its high-end “Nikon D850” — the first full-frame DSLR to earn a perfect score of 100 from the independent rating website DxOMark on both colour and dynamic range coming from the sensor.

The FX-format (full-frame) camera has an impressive 45.7MP sensor (up from its successor D810’s 36.3MP) with a native ISO sensitivity range of 64-25,600 and an upgraded 153-point autofocus system.

The device has seven frames per second (7fps) with continuous autofocusing (AF) which can be upgraded to 9fps with an additional battery grip.

Priced at Rs 254,950 (body only) and Rs 299,950 with the AF-S NIKKOR 24-120mm f/4G ED VR lens, let us see what this mid-range model in Nikon’s full-frame DSLR camera line-up and successor to D810 has to offer to photo enthusiasts.

Design: The body design of the D850 is similar to the earlier D810, but this time, Nikon has done away with the built-in flash — keeping in mind the needs of professional photographers.

The D850 is undoubtedly one of the company’s fastest-shooting DSLRs. The camera comes with a touch-enabled, 3.2 inch diagonal tilting LCD with 2,359K dots.

The weather-sealed magnesium alloy body is resistant to dust and moisture.

The camera weighs 915 gms with a dimension of 146 x 124 x 79mm. Nikon has designed back-side illuminated (BSI) full-frame image sensor with no optical low-pass filter.

Sensor: The D850 has Nikon’s first-ever BSI full-frame image sensor (35.9 mm x 23.9 mm) with no optical low-pass filter which will improve the low-light performance and peripheral image quality.

The BSI CMOS sensor delivers superior image quality when compared to traditional CMOS sensors. The D850 offer the lowest base ISO (ISO 64) of any DSLR or mirrorless cameras.

Video shooting: The camera can shoot videos in full-frame 4K UHD with NIKKOR wide-angle lenses as well as full high-definition (HD), slow-motion video recording of up to 120fps.

Perfect for multimedia shooting, the D850 supports 4K videography and 8K time-lapse movie production with silent interval timer photography as slow as 0.5 seconds.

Videographers can easily fine-tune colour, exposure and brightness that is reflected in white blown-out areas with Nikon’s “Flat” Picture Control, all without any hassle.

Card Slot: The camera has two card slots — one XQD card and the other Secure Digital (SD) card.

Pros: Lowest base ISO, high-resolution and sharp details, new silent shooting mode, large viewfinder, tilt-angle touchscreen LCD, proven AF system, good battery life and 4K UHD video shooting.

Cons: No built-in flash, Wi-Fi and Bluetooth connection lags.

Final Take: The D850 is probably the most well-rounded, full-frame DSLR camera from Nikon after Canon launched its 50 MPI (EOS 5DS) a few months back.

We, however, think Nikon has a slight edge when it comes to image quality.

The flexible shooting position and more focus points are helpful if you are covering fast-action games like football, hockey and badminton.

The continuous shooting mode is really fast and flawless with low sound. A small in-built flash could have make it much more attractive but the ISO expansion limit is so high and with good quality that the flash will not required in most of situations (at least in news photography).

The D850’s key strengths are its outstanding colour and dynamic range at base ISO where it edges past its rivals.

Overall, we recommend hybrid photographers and multimedia creators to opt for the best DSLR experience so far in Nikon D850.

By Partha Sarathi Mitra (IANS) 

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Elon Musk quits OpenAI group to avoid conflict with Tesla

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Elon Musk (File Photo)

 San Francisco, Feb 23: SpaceX and Tesla CEO Elon Musk has quit the board of OpenAI, a non-profit artificial intelligence (AI) research company he co-founded that aims to promote and develop friendly AI that benefits the humanity.

“Elon Musk will depart the OpenAI Board but will continue to donate and advise the organisation. As Tesla continues to become more focused on AI, this will eliminate a potential future conflict for Elon,” the research group said in a blog post on Thursday, welcoming some new donors.

In 2014, Musk said AI was humanity’s biggest existential threat later adding that the United Nations needed to act to prevent a killer robot arms race.

OpenAI has fast become a significant voice in the global machine learning community.

Its research has been wide-ranging, including teaching computers to control robots with minimal instruction and the creation of AI agents to play popular video game Dota.

OpenAI recently contributed to the “Malicious Use of Artificial Intelligence” report, which warned AI was ripe for exploitation by rogue states, criminals and terrorists.

Drones turned into missiles, fake videos manipulating public opinion and automated hacking are just three of the threats from artificial intelligence in the wrong hands, experts said in the report.

They said that those designing AI systems need to do more to mitigate possible misuse of their technology and that governments must consider new laws to tackle such misuse.

IANS

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Airtel offers Rs 2,000 cashback on Motorola, Lenovo 4G device

As part of the offer, Moto C would be available for Rs 3,999, Moto E4 for 6,499 and Lenovo K8 Note for Rs 10,999.

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AIRTEL

New Delhi, Feb 23: As part of its “Mera Pehla Smartphone” initiative, Telecom services provider Bharti Airtel announced to offer a cashback of Rs 2,000 on select 4G Motorola and Lenovo smartphones.

Two popular 4G smartphones from Motorola — Moto C, Moto E4 and Lenovo K8 Note are available with the offer.

As part of the offer, Moto C would be available for Rs 3,999, Moto E4 for 6,499 and Lenovo K8 Note for Rs 10,999.

“We look forward to working with Motorola to bring smartphones within the reach of more and more customers,” Vani Venkatesh, Chief Marketing Officer, Bharti Airtel, said in a statement.

“It is a great opportunity for Airtel subscribers to upgrade to 4G and enjoy the meaningful experiences across Motorola & Lenovo smartphones,” added Sudhin Mathur, Managing Director, Motorola Mobility India and Lenovo MBG India.

IANS

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New iPhone app to aid heart attack survivors

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Corrie app

New York, Feb 23: A new iPhone-based app may help patients who survived a heart attack to maintain their health and reduce the number of hospital readmissions, according to a study.

The “Corrie” app is the first cardiology app for the Apple CareKit platform and is designed to help patients navigate the hospital discharge process by educating them about heart disease.

The app allows them to keep track of medications, follow-up appointments and lifestyle changes needed after a heart attack.

“We have found there are many gaps in care in patients recovering from a heart attack,” said lead author William Yang, from the Johns Hopkins University in Baltimore, US.

“We wanted to engage patients in their own care, and help them transition from the hospital to home using existing technology,” Yang added.

Heart attack patients “may suddenly have new doctors and more medical visits, including cardiac rehab, and the app helps them track and centralise all those appointments”, he said.

The app helps patients to keep track of all their medications, including how much to take and at what time.

It also syncs with the Apple Watch to monitor heart rate and keep track of how much they are walking and with a Bluetooth blood pressure monitor.

Yang said the app has also proven useful to patients even while they were still in the hospital as it allows patients to store important medical information on the app.

The results were presented at the American College of Cardiology’s Cardiovascular Summit in Las Vegas.

IANS

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