Cheng Bao

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

Comments

Total: 391, showing: 1 – 20
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On article Ten things we're hoping for from the Nikon D850 (200 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 (54 comments in total)
In reply to:

MikeF4Black: 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 (54 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 (54 comments in total)
In reply to:

MikeF4Black: 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
On article Recycled: the Dakota Digital single-use digital camera (54 comments in total)
In reply to:

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

They are still trying, right now, it is pay-per-view/digital rentals

Link | Posted on Jul 13, 2017 at 16:23 UTC
On article Recycled: the Dakota Digital single-use digital camera (54 comments in total)

To be fair, if manufacture could convince customers to use this instead of disposal film cameras, and if manufacture could resell them after refurbishing, it could be a success.

The disposal film cameras lives much longer after digital take over films, esp. for wedding/party, underwater category.

One of the problems of this one is this is Ritz only. If this sell from any convenience stores/walmart, and can be processed from most photo boothes, It would have a fair chance to be a success.

Link | Posted on Jul 13, 2017 at 16:21 UTC as 20th comment
In reply to:

Neez: Wow, I was eyeing the RX100 V, but I guess I should wait for the RX100VI due to lower rolling shutter. I guess they're trying to make it the ultimate vlog camera.

@Entropy512
In industry environment, since the ambient light is controlled, you can simply lower the ambient light so that it doesn't affect the flashed result at 1/250s shutter speed (assumed scroll speed of rolling curtain shutter)

Also assume that ambient light can't be lower to total darkness to enable some other monitor operations.

In total darkness, you don't need any global reset/shutter, you can just leave shutter wide open, and use flash to illuminate. That's how people shoot bullet smashing apples without any super fast shutter.

Link | Posted on Jun 27, 2017 at 19:31 UTC
On article Now we know: Sony a9 is sharper than we thought (394 comments in total)

should you update the first paragraph of raw performance?

"Although at first glance the a9 appears slightly softer than the Nikon D5, part of this may be due to its slightly higher resolution and the D5's known-to-be-weak AA filter (not to mention: the different lenses)."

Link | Posted on Jun 23, 2017 at 01:52 UTC as 48th comment
On article Now we know: Sony a9 is sharper than we thought (394 comments in total)
In reply to:

beavertown: The A9 has been proving itself as a strong competitor to the 1DX II and D5 day by day by professional reviews all over the world, I am sure there are more to come.

So, that's why white house want to host more and more off-camera new press recently.
Because A9 is too revealing?

Link | Posted on Jun 23, 2017 at 01:48 UTC
On article Sony a9 Full Review: Mirrorless Redefined (2724 comments in total)
In reply to:

FF Pro: I'm glad you all reshot the a9 test photos but you should run a front page correction for the next two months. Amateur move screwing over a camera company in that fashion. Hurry much?

If you are not reading the article, or simply trolling.

Rishi admits that it is largely a human error instead of camera error, since all their test shots are MF on macro rail

Link | Posted on Jun 23, 2017 at 01:37 UTC
On article Now we know: Sony a9 is sharper than we thought (394 comments in total)
In reply to:

chshooter: So you are basically saying that this alleged top-of-the-line camera with incredible autofocus isn't able to get a stationary test target in focus properly.
That's what I call innovation on behalf of Sony.

please read articles before posting comments.

All studio shots are use MF only, which subject only to human error, not camera error.

Link | Posted on Jun 22, 2017 at 17:59 UTC
In reply to:

stevo23: Gotta put a protective filter on that in case it gets damaged. But oh how it renders - no CA, no distortion. Just puuuuuurrrreeee.

Actually, a very cool project.

CA would be on extreme side, that's why it only have B+W photo here.
Otherwise, if there is no CA from water drops, we wouldn't see any rainbows in sky after rain

Link | Posted on Jun 21, 2017 at 19:08 UTC

Welcome to digital photography rumors

Link | Posted on Jun 13, 2017 at 00:43 UTC as 20th comment
On article Sigma SD Quattro H Review (693 comments in total)

https://www.dpreview.com/reviews/sigma-quattro-h/6
the default crop of test scene:

what's the pink smears on skyblue/orange rings?

Link | Posted on May 31, 2017 at 19:02 UTC as 125th comment | 3 replies
On article MIT previews autonomous tracking drone (11 comments in total)

One step closer to Terminator

Link | Posted on May 22, 2017 at 19:23 UTC as 9th comment | 2 replies
In reply to:

Rouseabout: My experience with Nikon Fw updates is that they primarily render OEM products such as batteries unusable.

you want to say non-OEM?
Because OEM is outsourced but still authentic product.

Link | Posted on Apr 25, 2017 at 15:41 UTC
Total: 391, showing: 1 – 20
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