Peng Bian

Peng Bian

Lives in United States Boston, MA, United States
Works as a Program Manager
Has a website at http://500px.com/PBian
Joined on Sep 18, 2012

Comments

Total: 23, showing: 1 – 20
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On CP+ 2015: Nikon shows off new D810a article (65 comments in total)
In reply to:

Baba Ganoush: This camera, we're told, is highly specialized and designed especially for astrophotography, so why does Nikon display it with a 24mm wide angle lens instead of a long telephoto (or even a telescope)? Does Nikon think this lens is appropriate for astrophotography or are they trying to suggest the D810A has other, more general uses? Seems to me like another case of a disconnect between Nikon and actual Nikon users.

Over-thinking leads to bad... uh where am I? Oh right, every once in a while people into astrophotography will still want to take shots of the entire night sky, maybe? Milky way is a celestial body much like those further away, I dunno...

Direct link | Posted on Feb 12, 2015 at 23:21 UTC
In reply to:

Drazen Stojcic Buntovnik: I would guess that DJI Inspire II would feature a MFT standard lens mount with probably 2 or 3 interchangable lenses. Probably a fisheye, a wide angle and a "normal" 35mm-like lens. Most likely these lenses would have to have same or very similar weight and center of gravity. Something like that would potentially be a game changer in drone photography / videography.

Hopefully lot of the smaller M43 lenses should work as well. If you had to use only their lenses, well, kinda defeats the purpose.

Direct link | Posted on Feb 12, 2015 at 11:16 UTC
On 3,200MP LSST camera gets construction approval article (257 comments in total)
In reply to:

princewolf: I'm not interested in things I can't buy.

That's just what poor people tell their children...

Direct link | Posted on Feb 3, 2015 at 14:00 UTC
In reply to:

PerL: I think the media companies that are downsizing their print/magazines business, and the advertisers, and instead focuses on the internet misses one thing, that will be more and more relevant.
The channel (internet) is getting extremely crowded. Through that screen you compete not only with millions of other media sites but also with peoples mail, Facebook, all kinds of social media. There will be a digital clogging.
A physical product is a way to get attention beside the constant and increasing flow of digital noise.

Physical products are great, but we're talking about magazines specifically, which is in every way inferior to its digital counterpart, unless it's one of those perfume ads page I guess.

Direct link | Posted on Jan 29, 2015 at 00:46 UTC
On Canon to move camera production back to Japan article (108 comments in total)
In reply to:

mpgxsvcd: They are taking all of their toys and going home like a petulant child.

Man, you guys need to take that bug out of your ass. The comment was obviously made in jest.

Direct link | Posted on Jan 13, 2015 at 00:25 UTC
On BPG image format aims to replace JPEGs article (205 comments in total)

Any compression deals with perceived quality by humans, which will be different from a straight up SNR comparison. To be honest, in most cases, looking at my RAW and JPG side by side, I'm not seeing the compression artifacts as much as the noise from the exposure and softness of the image from the lens not providing theoretical maximum resolution, and both exist in the RAW.

Direct link | Posted on Dec 16, 2014 at 18:58 UTC as 15th comment | 1 reply
On BPG image format aims to replace JPEGs article (205 comments in total)
In reply to:

Peter K Burian: Here's a different perspective on this topic, IMHO:

For a new format to succeed, it would also need to be a capture option that cameras offer. ***Not just a format for use on Web sites.***

That would require all camera companies AND all software manufacturers get on this bandwagon. But they won't. The concept of a familiar JPEG format (especially for 90% of the population who are snap shooters, at best) is essential for the market. The fact that BPG is far superior is not relevant. It boils down to marketing and what the public will accept, as the camera manufacturers see it. Too many consumers would find a new image format to be an extra complication to deal with.

Serious shooters already have RAW capture as an alternative to JPEG. And snap shooters are happy with JPEG; they just don't know any better, and 90% do not even *want* to know.

During my masters I studied wavelet transformation and JPEG2000 quite extensively, it is so much superior compared to JPG, and probably BPG, given H.265 is still based on older DCT technology. But block DCT is already optimized with current hardware whereas wavelet is not, which is why BPG has a higher chance of success.

Direct link | Posted on Dec 16, 2014 at 18:43 UTC
On WaterWeight rethinks the sandbag approach to stability article (77 comments in total)
In reply to:

BSHolland: Wow... stress tested by applying up to 6.8kg of force? I regularly use my camelbak. Attach to bottom hook of tripod, keeps me hydrated when out in the field AND serves as an air- or water-cushion on the ground in front of my tent after the shoot. That's 75kg of "stress test".

FrAME of reference the iPhone 6 plus, prone to bending still required 90 pounds of force before deforming. And that's a delicate piece of electronic equipment.

Direct link | Posted on Dec 9, 2014 at 11:47 UTC
On WaterWeight rethinks the sandbag approach to stability article (77 comments in total)

My tripod costs less than this useless invention.

Direct link | Posted on Dec 9, 2014 at 11:30 UTC as 32nd comment
On High-end full frame roundup (2014) article (599 comments in total)
In reply to:

refusenik: Hmmm, DPR are being inconsistent here - they don't like that the Sony A7/r/S doesn't have a built-in flash but don't seem bothered that the Canon 6D and 5D don't have built-in flash either.

Hit the nail on the head. Dynamic range is very important, more so than ISO performance in some cases. This is just an area that Canon trails so far behind the competition.

Direct link | Posted on Dec 8, 2014 at 10:57 UTC
On Sony Alpha 7 II real-world sample gallery posted article (244 comments in total)
In reply to:

Peiasdf: I get less and less of the British humor DPReview like to post. Maybe it is a result of DP joining mothership in Seattle and the horrible weather there. Most sample image aren't interesting to look at. Good for technological analysis but simply don't wow unlike marketing material. If only DP can move to Florida, Arizona, California or Hong Kong.

Yeah, hire someone like Ming, he can crank out a lot of shots, but they always look great. Makes reading reviews and impressions much more interesting.

Direct link | Posted on Dec 7, 2014 at 10:49 UTC

Plot twist, Pentax offers contest winner 645Z in exchange for 1 month PhaseOne loaner. Slogan, "for the same price, own a PhaseOne for a month or a Pentax for a lifetime".

Direct link | Posted on Dec 6, 2014 at 09:34 UTC as 29th comment
On Panasonic Lumix DMC-LX100 Review preview (930 comments in total)
In reply to:

mpgxsvcd: Everyone complains that the LX100 has too low of a resolution and that its lens is a compromise. I am looking at the RAW indoor test scene images and I honestly see that the LX100 has more detail than the Sony RX100 MKIII across the entire frame for all ISO values.

The difference in noise for the cameras is not huge but the LX100 is better. I don't get why everyone says that the Sony has more detail. It doesn't show in the pictures. Just because the resolution is more doesn't mean that it actually has more detail.

I would suggest you play around with the new lens performance widget. The studio test scene is shot at 1 focal length and 1 aperture (stopped down). If instead of looking across the entire ISO range which is more about sensor performance you looked at the focal length and aperture range, you will notice that it isn't so clear cut. With Sony taking the lead in some cases and the Panny in others.

Direct link | Posted on Nov 22, 2014 at 00:23 UTC
On Canon PowerShot G7 X Review preview (455 comments in total)
In reply to:

Donnie G: I was convinced that I wasn't among the consumers that Canon's G7 X was made for because I have never been interested in owning any compact camera. Boy was I wrong. Although I have no interest in owning compact cameras, my teens are very interested in the category, and I am their "deep pockets". So I wound up buying 2 G7 X cameras, one for him and one for her. Between the 2 of them, they were able to setup the cameras without any input from "the broke old guy". After about 10 days, my gorgeous gal pal, Brandi, and I were able to decipher enough teen slang to learn that the camera features they worship the most are the programable click wheel around the lens collar, the articulated touch screen, and the ability to upload images to social media via Canon's Image Gateway service. I don't think that these kids are even aware of the other features, such as sensor size, lens speed, focal length, or even IQ. It takes better photos than their smartphones and their friends think its cool. :)

I don't know if I agree with this. The younger generation are generally pretty tech savvy and most are now aware of the battle of image sensor size versus MP count, as well as aperture size. And this camera's external design is too inconspicuous for it to be considered a status symbol by their peers.

Direct link | Posted on Nov 12, 2014 at 08:50 UTC
On Canon PowerShot G7 X Review preview (455 comments in total)

It's obvious Canon skimped on the processing unit to cut down on costs. The RAW shooters will have a hard time swallowing the continuous shooting speed.

Direct link | Posted on Nov 12, 2014 at 08:42 UTC as 81st comment | 1 reply
In reply to:

Peng Bian: Anyone know what lens is on the 5100? I'm on my mobile can't see exif.

No wonder it's so sharp in the corners.

Direct link | Posted on Oct 15, 2014 at 02:42 UTC

Anyone know what lens is on the 5100? I'm on my mobile can't see exif.

Direct link | Posted on Oct 15, 2014 at 02:24 UTC as 64th comment | 8 replies
On Hands-on with the Panasonic Lumix DMC-GM5 article (304 comments in total)
In reply to:

Timmbits: @DPR:
"allows shutter speeds of up to 120 seconds(...) To avoid shaking the camera in this mode, a smartphone can be used as a wireless remote control via the Lumix Imaging app."
You make it sound like you need a remote because of the long exposure time of 2 minutes.
I would be much more concerned with camera shake from pressing the shutter with a 1 second exposure... at 2 minutes, such a brief shake doesn't even show up.

I agree that preventing camera shake from shutter press is not something that is specific for extremely slow shutter speeds, but I wasn't really confused. They were just trying to transition into the obligatory wireless functionality that they needed to mention.

Direct link | Posted on Oct 12, 2014 at 16:41 UTC
In reply to:

Eleson: Why is everyone so hung up Canon diving into the mirrorless market?
There are plenty of MLC options out there that suits almost any conceivable need. And most can use Canon lenses with adapter.

Is it important for you that it has the right logo on the front?

That's an extremely ill conceived remark. My camera purchasing choices will have very little impact on the brand itself. The arguments are more an editorial of the effort or lack thereof for Canon in mirrorless cameras, and how naive the exec's comment was on how serious they are about mirrorless, which has been argued as the future of the camera evolution.

Direct link | Posted on Sep 28, 2014 at 01:10 UTC
In reply to:

mpgxsvcd: What makes the LX100 a "Point and Shoot" camera. Yes it has an Auto mode. However, all cameras including Full Frame DSLRs have an Auto mode.

The term "Point and Shoot" is what should die. There is no such thing as a point and shoot camera. All cameras have some sort of camera control now.

The more appropriate term is compact or more specifically you can say small sensor compact or large sensor compact.

Well, we can classify a point and shoot not by the availability of an auto mode but rather the lack of manual controls, you can still make some sense of the article, since enthusiast compacts include both larger sensors and more manual controls. But I agree about the disambiguation of sensor size / lens brightness and the amount of manual controls.

Direct link | Posted on Sep 23, 2014 at 02:12 UTC
Total: 23, showing: 1 – 20
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