Cheng Bao

Lives in United States United States
Joined on Oct 3, 2003

Comments

Total: 403, showing: 1 – 20
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In reply to:

Wout de Zeeuw: The bird in flight photo looks encouraging, more of this please! This camera is starting to look like an excellent bif camera!

Bif? I didn't see any BIF sample from dpr.
i-r attended same event has a few BIF though.

Link | Posted on Sep 14, 2017 at 19:09 UTC
In reply to:

BertIverson: RX10M4 Price is no different from the RX10M3 which sold for $1700 for a while. M3 price has been gradually reduced over the past few months to $1300 in anticipation of the M4 introduction. Given the M4 improvements, I am surprised M4 is not $1800.

According to sony PR, RX10M3 introduction price is $1500
Pricing and Availability

The new Sony Cyber-shot RX10 III extended zoom camera will be available this May for about $1,500 US and $2,000 CA, respectively. The new cameras and all compatible accessories will be sold at a variety of Sony authorized dealers throughout North America.

Link | Posted on Sep 14, 2017 at 02:32 UTC
In reply to:

Androole: The only thing I'm interested here is the supposedly new Bayer Filter technology they're talking about...

Any chance we could get a tech article?

This techniques is nothing new. Sony A900 is known for sacrifice high-iso for a little better color fidelity. However, color fidelity is very subtle and hard to measure, but high iso noise is more prudent for users to view.

To Doug Pardee
Human eyes are not capable for capture "full spectrum". This technique is attempting to more closer to perception of human eyes

Link | Posted on Sep 13, 2017 at 15:39 UTC
In reply to:

zeratulmrye: “Sony's camera team has not been aware of the Nikon D850's sensor all along, prepping a response to it years in advance...”

Is this Sony confirming that D850 is using their sensor?

Since we never see Sony brags about "Company A's camera model X uses Sony's sensor",
It is pretty safe to assume that sony semiconductor are under heavy NDA not to disclose customer's info, by customer's requirement.

So, it is highly unlikely that sony themselves will talk about origin of D850 sensor.

Link | Posted on Sep 11, 2017 at 22:51 UTC

I believe that sales of A700 must be horrible.
That's why I got fire sale of a a700 with low price not long after its release.

Also it took Sony four years to bring out an upgrade, while canon/nikon upgrade mid range aps-c DSLR each one and half year.

Link | Posted on Sep 7, 2017 at 18:39 UTC as 38th comment
On article Sony a9 underwater review: Shooting great white sharks (52 comments in total)
In reply to:

entoman: Sounds like Sony wrote the script themselves.
But, assuming that they didn't, it seems to confirm everything in various reviews indicating the great AF performance of the a9.

Admittedly, using a 16-35mm lens at F8 isn't exactly the hardest of AF tests. A test with a macro lens with insects in flight would be interesting to see!

I'm tied into a Canon system, and I love Canon cameras, but Sony are getting better with every release, and I can't wait to see what they bring out next.

"They love the water, and they personally dive and shoot with the gear they sell. "

Since they selling gears, so it is very predicable that they wouldn't trash equipment in reviews.

Link | Posted on Aug 22, 2017 at 05:27 UTC
On article Advertising vs reality: microSD memory card speed test (73 comments in total)

If no one can surpass 80MB/s, one possibility is the limiting factor is card-reader -> usb cable, usb port, motherboard, the chain of data flow.

Link | Posted on Aug 7, 2017 at 23:27 UTC as 25th comment | 1 reply
In reply to:

happy guardian: The only question whether it will be an APS-C or a Full Frame. Something tells me it will be Full Frame.

Neither now demised Samsung nx
When E mount is first out, it's laughing stock for many people because it has huge mount.

I believe fujifilm must take clue from some of them, so they makes x mount smaller so the lens could be smaller.

Link | Posted on Aug 2, 2017 at 03:34 UTC
On article Ten things we're hoping for from the Nikon D850 (479 comments in total)
In reply to:

Dr Blackjack: Speculation yeah!

If a man is allowed to dream... I want that 42MP Sony sensor in the D850. That would be legendary.

I mean from high sensitive point of view , scaled up D500 won't be degeneration from D810

Link | Posted on Jul 28, 2017 at 00:44 UTC
On article Ten things we're hoping for from the Nikon D850 (479 comments in total)
In reply to:

Dr Blackjack: Speculation yeah!

If a man is allowed to dream... I want that 42MP Sony sensor in the D850. That would be legendary.

Although D500 has slightly worse per-pixel SNR18%, however, it does has dual-gain ADC, which translated to much cleaner shadow area at high ISO as per-pixel level. and the difference of normalized high ISO DR would be significant.

It is perfect for night sky shooting, which is depicted in D850's teaser

Link | Posted on Jul 26, 2017 at 23:58 UTC
On article Ten things we're hoping for from the Nikon D850 (479 comments in total)
In reply to:

Dr Blackjack: Speculation yeah!

If a man is allowed to dream... I want that 42MP Sony sensor in the D850. That would be legendary.

fix: ISO100 print DR of D850 (projected) is 14.56

Link | Posted on Jul 25, 2017 at 21:44 UTC
On article Ten things we're hoping for from the Nikon D850 (479 comments in total)
In reply to:

Dr Blackjack: Speculation yeah!

If a man is allowed to dream... I want that 42MP Sony sensor in the D850. That would be legendary.

If D850 is just scaled up D500, without any ISO 64,
the screen dr (ISO 100from dxo) would 13.29, and we can plot print DR (47M normalized to 8M) as 14.96, which is higher than D810's ISO 64 DR 14.76

If we assume new sensor offer some modification to offer ISO64, the ISO64 DR could be 13.69, with print DR 14.96.

Either way, it would be upgrade from D810

Link | Posted on Jul 25, 2017 at 21:41 UTC
On article Ten things we're hoping for from the Nikon D850 (479 comments in total)
In reply to:

Dr Blackjack: Speculation yeah!

If a man is allowed to dream... I want that 42MP Sony sensor in the D850. That would be legendary.

In theory, they can call full HD x 4 as 8k, which means 7680 as long edge.
However, I expect they go beyond 42MP

Link | Posted on Jul 25, 2017 at 04:36 UTC
In reply to:

Ace of Sevens: Isn't the issue of a non-flat focal plane mainly a problem for shorter focal lengths?

@Karroly
the statement is true for flat sensor too
If manufacture can make imaging plane flat across zoom range, they sure can make imaging plane keep on same curve across zoom range

Link | Posted on Jul 21, 2017 at 19:32 UTC
In reply to:

EricAotearoa: This appears to be a common house sparrow. "The house sparrow's flight is direct (not undulating) and flapping, averaging 45.5 km/h (28.3 mph) and about 15 wingbeats per second" Wikipedia.

It is possible when a bird trying to hover instead of flight, its wingbeat would be higher to sustain its weight

Link | Posted on Jul 19, 2017 at 04:08 UTC
In reply to:

Robert1975: This machine destroys the "competition" of good, original art photographers - this is good development. Finally, formulaic "pro" landscape shots will be devalued as they should be. Shooting focus stacked 14-24 or 11-24 in RAW does not make you a "pro".

Only man can create artwork... Because man is free from "algorithms"!

Human DOESN'T HAVE TO use algorithm.

This very thought could be a result of algorithm

Link | Posted on Jul 17, 2017 at 21:55 UTC
In reply to:

zzzxtreme: I'm amazed manufacturers know which batch has problems and which doesn't. How'd they do that?

This called component tracking system

Link | Posted on Jul 14, 2017 at 02:48 UTC
On article Recycled: the Dakota Digital single-use digital camera (53 comments in total)
In reply to:

Michiel953: So where's the image gallery?

well, they could when those "things" still out there, but they didn't.

Fair to dpreview, when these things were out, dpr might still based on London, so, they need some oversea shipping involved.

Link | Posted on Jul 13, 2017 at 20:53 UTC
On article Recycled: the Dakota Digital single-use digital camera (53 comments in total)
In reply to:

nicoboston: Gad, "single-use digital camera"... It reminds me of the DVD Rewinder. It was a joke, though.

Digital rent will cost bandwidth, which is not resource free.
Traditional brick-and-mortar dvd/vhs rental stores cost is huge compared to bandwidth, however, modern netflix rental cost is minimal. A fraction of fuel cost of usps and some page sleeves.

Link | Posted on Jul 13, 2017 at 20:50 UTC
On article Recycled: the Dakota Digital single-use digital camera (53 comments in total)
In reply to:

Michiel953: So where's the image gallery?

Yes, shame on dpreview by not to spend merely $22 to show photo samples

Link | Posted on Jul 13, 2017 at 16:24 UTC
Total: 403, showing: 1 – 20
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