Jon Stern

Lives in United States Mountain View, CA, United States
Works as a Electronics Engineer
Joined on Apr 21, 2003

Comments

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On article GoPro unveils Fusion, a 5.2K spherical VR camera (43 comments in total)
In reply to:

Franz Weber: I am feeling dizzy now

Don't look at it using a mobile browser (well, at least Safari on iOS). If you use a desktop browser you get the correct VR Youtube playback that allows you to pan around.

Link | Posted on Apr 20, 2017 at 23:41 UTC
On article GoPro unveils Fusion, a 5.2K spherical VR camera (43 comments in total)
In reply to:

User9362470513: Genuine question - what's the point? It doesn't look good, induces sea sickness and looks like a gimmick that quickly wears thin. Not sure who would want to make or watch this sort of distorted footage.

Don't look at it using a mobile browser (well, at least Safari on iOS). If you use a desktop browser you get the correct VR Youtube playback that allows you to pan around.

Link | Posted on Apr 20, 2017 at 23:40 UTC

We had the same debate at work (in our Optical Systems Group) a couple of months ago. We ended up using this as our reference:

https://www.youtube.com/watch?v=OR8HSHevQTM

Link | Posted on Mar 30, 2017 at 20:00 UTC as 111th comment
In reply to:

justmeMN: "I can say it use to take about 70 people to make a lens like that prior to automation, now we need about 6 or 7."

In the USA, there is political discussion about "bringing back" manufacturing jobs. Increasing automation is why it's not going to happen.

@Teila Day, oh no! This is not the aftermath of automation. This is just the beginning. AI and improving robots will supplant more and more jobs.

Professional drivers? Gone in 10-20 years.
Pilots? Gone in 30 years (only so slow because of a airline industry conservatism).
Farm laborers? Gradually replaced by robots and mostly gone in a couple of decades.

And the list could go on and on.

Link | Posted on Mar 21, 2017 at 20:11 UTC
In reply to:

Jon Stern: What's missing from this tour is the coating. You go straight from polishing to assembly (actually, I'd expect an annealing stage too).

Did they show you the coating chambers? I'm particularly interested in the nano-coating technology and how this is grown.

@Dr_Jon, thanks for those links (I'm Dr Jon too!).

This answers several questions I have. It also tells me that this technology is only going to work for relatively large (low SAG) elements due to being spin coated. That in turn tells me that the approach is not going to work for the types of lenses that I work with professionally.

Link | Posted on Mar 21, 2017 at 18:01 UTC
In reply to:

Jon Stern: Among the many questions I would have asked is, "What are there so few DO lenses?"

Yes, but those compromises seem to be acceptable for some customers and use cases. Is it that demand is weak, or that they are expensive to develop?

Link | Posted on Mar 21, 2017 at 05:00 UTC
In reply to:

justmeMN: "I can say it use to take about 70 people to make a lens like that prior to automation, now we need about 6 or 7."

In the USA, there is political discussion about "bringing back" manufacturing jobs. Increasing automation is why it's not going to happen.

@Teila Day, the study was from 1995 to 2015, I think. I understand what the anecdotal evidence suggest, and I myself have spent a lot of time in China working with manufacturers there.

However, a detailed studies show that automation is the main reason for US manufacturing jobs losses, even while US manufacturing output has actually INCREASED.

http://fortune.com/2016/11/08/china-automation-jobs/

Link | Posted on Mar 21, 2017 at 00:27 UTC

What's missing from this tour is the coating. You go straight from polishing to assembly (actually, I'd expect an annealing stage too).

Did they show you the coating chambers? I'm particularly interested in the nano-coating technology and how this is grown.

Link | Posted on Mar 21, 2017 at 00:02 UTC as 41st comment | 3 replies

Among the many questions I would have asked is, "What are there so few DO lenses?"

Link | Posted on Mar 20, 2017 at 23:57 UTC as 14th comment | 3 replies
In reply to:

justmeMN: "I can say it use to take about 70 people to make a lens like that prior to automation, now we need about 6 or 7."

In the USA, there is political discussion about "bringing back" manufacturing jobs. Increasing automation is why it's not going to happen.

83% of the 5 million US manufacturing jobs lost in 1995 have been lost to automation. Only 17% have been lost to globalization.

Link | Posted on Mar 20, 2017 at 23:54 UTC
In reply to:

krassphoto: "it use to take about 70 people to make a lens like that prior to automation, now we need about 6 or 7."
...yet the prices are going up.

Stronger Yen.

Link | Posted on Mar 20, 2017 at 23:53 UTC
In reply to:

Jon Stern: I hope you had gyoza and beer while in Utsunomiya. It's one thing it's known for.

That's a shame. I did once manage to fit that in when on a business trip to Ikegami, the renowned Japanese broadcast camera manufacturing who is headquartered in Utsunomiya.

Link | Posted on Mar 20, 2017 at 20:29 UTC

It's interesting that they're testing lenses on modified cameras, rather than using a Trioptics machine.

Link | Posted on Mar 20, 2017 at 18:41 UTC as 61st comment | 1 reply

I hope you had gyoza and beer while in Utsunomiya. It's one thing it's known for.

Link | Posted on Mar 20, 2017 at 18:37 UTC as 62nd comment | 2 replies
In reply to:

orion1983: Visionary approach! However, I assume that their "image fusion technology" to render a 3x optical zoom a 5x "optical" zoom is just few more than a normal digital zoom until I a proven wrong ;)
Also the chip seems to be not a 1/2.3" one which I for myself see as absolutely crucial for great phone pics

Super resolution genuinely provides additional resolution (by fusing the two camera images). The 5x claim is sound.

https://en.wikipedia.org/wiki/Super-resolution_imaging

Link | Posted on Feb 27, 2017 at 20:33 UTC
In reply to:

chaos215bar2: Can someone correct the headline, or is OPPO actually calling this "5x optical" zoom? That's certainly not what's described here.

Super resolution allows the system to deliver equivalent performance of a 5x optical zoom from a 3x focal length ratio.

It's hard to market without it sounding like BS, but it's real.

https://en.wikipedia.org/wiki/Super-resolution_imaging

Link | Posted on Feb 27, 2017 at 20:31 UTC
In reply to:

cosinaphile: its cool hope its a better sensor than usually seen.... also 3x not 5 optical

The additional resolution is from super resolution techniques.

https://en.wikipedia.org/wiki/Super-resolution_imaging

Link | Posted on Feb 27, 2017 at 20:30 UTC
In reply to:

wetsleet: "OPPO announces dual-cam 5x optical zoom technology for smartphones"
Really? I thought the optical zoom was 3x.
Who is responsible for the marketing inflation here, Oppo or DPR?

These systems get an additional boost in resolution from super-resolution techniques (combining images from each camera). This is a real over-sampling technology that allows a 5x equivalent optical zoom performance from a 3x focal length ratio.

This is not marketing BS.

https://en.wikipedia.org/wiki/Super-resolution_imaging

Link | Posted on Feb 27, 2017 at 20:30 UTC

My father had one, but sold it for next to nothing, not realizing how much it was worth.

He had the rare roll-film back on his too.

Link | Posted on Jan 31, 2017 at 20:44 UTC as 19th comment
In reply to:

noflashplease: $1,000 for a cellphone from a Chinese manufacturer I've never heard of? What? For some reason, Samsung, Vivo and Oppo are selling phones with the same processor and 6GB of RAM, so this thing fits into some sort of odd consumer category in China. It just doesn't make sense to the outside world.

Gionee is a well-know brand in China. The fact you've never heard of it doesn't change the fact that probably close to a billion people have.

Link | Posted on Dec 27, 2016 at 23:10 UTC
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