Jon Stern

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

Comments

Total: 90, showing: 1 – 20
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On article Lens shootout: Sony RX10 III destroys the competition (407 comments in total)

DPReview destroyed by writers feeling that it's necessary to create clickbait headlines.

Link | Posted on May 26, 2016 at 20:10 UTC as 102nd comment | 16 replies

A camera need not perform pixel shift to extend dynamic range. HDR simply needs a sequence of exposures. Preferably taken in quick succession to minimize motion effects.

Pixel shift is all about using super resolution techniques to increase MTF. HDR is all about combining multiple frames.

Link | Posted on May 9, 2016 at 16:48 UTC as 91st comment

About time too!

I wondered how long it would take for them to produce AF lenses.

I hope they'll do Canon AF lenses next.

Link | Posted on May 4, 2016 at 04:46 UTC as 34th comment | 6 replies
In reply to:

Jon Stern: Strange how the press release text doesn't mention Micro Four Thirds. While followers of Olympus digital cameras and the digital Pens, in particular, would know this, it's almost as if they are trying to avoid talking about the sensor size.

pocoloco, that would be nice, yes. But given how difficult it is to define IQ (I know, I work for an image sensor company) so proxy for performance is needed. While the industry has long tried to push megapixels for that, it's really sensor size which is the biggest factor. The laws of physics mean that will always be the case.

When sensors had low quantum efficiency, low dynamic range, and high read noise, you could look to improvements to the sensor to deliver ever better IQ. But now sensors have reach maturity and only small incremental improvements are available. As a result, sensor size makes the most difference.

And then there's the bokeh factor on top of that.

Link | Posted on Jan 28, 2016 at 04:21 UTC
In reply to:

Jon Stern: Strange how the press release text doesn't mention Micro Four Thirds. While followers of Olympus digital cameras and the digital Pens, in particular, would know this, it's almost as if they are trying to avoid talking about the sensor size.

pocoloco, I totally agree that for typical (low information) consumers specs don't matter. When it comes to making consumer sales, industrial design matters more than specs, as that is where the emotional connection is made.

I also agree that m43 is good enough for most photographers, and would be suitable for the remaining photographers for most of the photos they take.

However, at $1100, this camera is not exactly targeted at the casual user. If they're going to sell on IQ, without totally relying on people looking at the sample photos, then sensor size is key. They talk about OIS and the benefit that provides in low light, but compared to a typical point and shoot (or smartphone) the number one factor is sensor size.

Perhaps they're not trying to position against point and shoot and smartphone users looking for better IQ, and instead are targeting the DSLR owner who is looking for a more-compact system. In that case, they might want to bury that this isn't an APS-C camera.

Link | Posted on Jan 27, 2016 at 19:34 UTC

Strange how the press release text doesn't mention Micro Four Thirds. While followers of Olympus digital cameras and the digital Pens, in particular, would know this, it's almost as if they are trying to avoid talking about the sensor size.

Link | Posted on Jan 27, 2016 at 07:33 UTC as 50th comment | 5 replies
On article Apple patent describes dual-camera design (32 comments in total)

This is very similar to CorePhotonic's dual-camera zoom:

See: http://www.cnet.com/news/corephotonics-dual-camera-tech-will-change-smartphone-imaging/

Link | Posted on Jan 11, 2016 at 22:18 UTC as 19th comment
In reply to:

Nukunukoo: would have been even better if they included even just a 10-bit option...

Mark, I hadn't seen JPEG-HDR before. That's a nice extension.

Thank you for sharing that info.

Link | Posted on Dec 4, 2015 at 22:28 UTC
In reply to:

Nukunukoo: would have been even better if they included even just a 10-bit option...

That's not possible. Sadly, JPEG is limited to 8-bits per color plane.

Link | Posted on Dec 3, 2015 at 18:31 UTC
In reply to:

EskeRahn: @all the comments complaining about the quality:

It is shot with a PROTOTYPE and thus far from a finalized and optimised product!

How good do you think the output from the first prototypes of the current types of sensors looked?

Look at the potential, not the imperfections.

After spending tens of millions of dollars and after nine years, expectations should be high.

Link | Posted on Oct 27, 2015 at 15:14 UTC
On article Polaroid Snap instant digital camera prints 2x3" photos (104 comments in total)

I'm only interested if I have to put the print under my armpit to develop it! ;-)

Link | Posted on Sep 4, 2015 at 04:01 UTC as 23rd comment | 1 reply
On article Fujifilm X100T successor rumored to feature new lens (327 comments in total)

Same overall specs, but better flare control please.

Link | Posted on Aug 26, 2015 at 06:01 UTC as 93rd comment
In reply to:

micksh6: DPR article incorrectly refers to sensor thickness instead of total camera module thickness, which includes lens.
In the source article, it's clearly stated that these numbers belong to whole sensor/lens module thickness:

"Samsung’s new 16Mp image sensor reduces the module’s overall height by 20 percent"
"Enabling a module z-height that is less than 5mm"

No wonder some readers got confused.

The thickness is referring to the total module height (from the back of the substrate to the top of the lens). The silicon will be 0.2mm or 0.15mm thick.

The thinner module is in comparison to a 16MP sensor with larger pixels, which has a optical format >1/3.2-inch, so requires lenses with a larger focal length (and therefore TTL).

[Full disclosure: I work on mobile phone camera modules for ON Semiconductor (formerly Aptina), a rival manufacturer of image sensors.]

Link | Posted on Jul 31, 2015 at 06:58 UTC

For $6200 you could hire a "friend" to travel with you and take photos.

Link | Posted on May 3, 2015 at 04:29 UTC as 101st comment
In reply to:

maxnimo: Why do they call it a 1" sensor when not even the diagonal is even close to 1" in length?

Optical formats are based on the outer diameter of old vidicon tube. It's a old, and rather obsolete system that imaging uses.

http://en.wikipedia.org/wiki/Optical_format

Link | Posted on Apr 19, 2015 at 02:07 UTC
On article Video: Tamron SP 15-30mm F2.8 Di VC USD Field Test (96 comments in total)
In reply to:

Jon Stern: For those of us that prefer to read, what's the conclusion?

Thank you!

Link | Posted on Apr 15, 2015 at 07:09 UTC
On article Video: Tamron SP 15-30mm F2.8 Di VC USD Field Test (96 comments in total)

For those of us that prefer to read, what's the conclusion?

Link | Posted on Apr 15, 2015 at 06:36 UTC as 38th comment | 2 replies
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