Cheng Bao

Cheng Bao

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

Comments

Total: 124, showing: 1 – 20
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I'd like to see this tech comes to mid-range FF camera with low sensor resolution like Df, A7s, 1Dx(strip down to some lower class body).

So, I can have both high ISO performance or low ISO resolution in same affordable package.

Direct link | Posted on Dec 17, 2014 at 18:39 UTC as 1st comment
On Canon EOS 7D Mark II Review preview (1117 comments in total)
In reply to:

ttran88: Why doesn't Canon use Sony's sensors, they can make a camera with best lens selection, best sensor, best feature set. Apple does it they buy processors and LCD from Samsung their biggest competitor. Customers come first Canon!!!

It is hilarious to see some ones called DXOMark scores are pure data manipulation, and meaningless to real world shooting.

Now DPR provides an excellent real world comparison, then they blindly ignore it and dug in to their own data manipulation to make canon's scores look better.

Direct link | Posted on Dec 16, 2014 at 23:31 UTC
On Canon EOS 7D Mark II Review preview (1117 comments in total)
In reply to:

lightmatters: There're rumors that Canon would be using Sony sensors in upcoming cameras.
I just wonder what is the next thing from Canon will be bashed after the bad DR is fixed.

Literally canon is not lying, the FF sensors they have got some advantages esp in higher ISO, which got beaten only by A7s, and A7s' sensor is not commercially available to canon.

and 70D and 7D2 sensors are best for video AF that available for canon, canon screwed video function except AF on 70D and 7D2 is another story.

For grand old sensors for EOS M2, 700D etc... Well, canon could say no one else make 1.6x sensors for them, so canon's is the best

Direct link | Posted on Dec 16, 2014 at 23:20 UTC
On Enthusiast mirrorless camera roundup (2014) article (299 comments in total)
In reply to:

plasnu: Which camera should I buy? Sony, but I didn't know that Sony is not the enthusiast mirrorless camera.

So I just wonder what cameras will classes with a7 in your round-up? Only a7s and a7ii, since.no other milc are in same category by dpr standard. Or with leica T, 645Z, hassleblad stellar ii for i-dont-know-where-to-place-them category?

Direct link | Posted on Nov 27, 2014 at 08:36 UTC
On Ten things you need to know about the Sony Alpha 7 II article (263 comments in total)
In reply to:

braisim: It's actually the first sensor stabilisation on a MIRRORLESS full frame camera. All Sony full frame DSLRs and DSLTs have sensor stabilisation. DP Review shows its ignorance of the Sony system (also through its refusal to review the A77 Mark2).

I think he meant for you original news article, not this one

Direct link | Posted on Nov 26, 2014 at 23:59 UTC
On Ten things you need to know about the Sony Alpha 7 II article (263 comments in total)
In reply to:

braisim: It's actually the first sensor stabilisation on a MIRRORLESS full frame camera. All Sony full frame DSLRs and DSLTs have sensor stabilisation. DP Review shows its ignorance of the Sony system (also through its refusal to review the A77 Mark2).

"Autofocus and now auto exposure can be used while tracking a moving subject during burst shooting (at 5 fps)."
Actually A7 can do 5fps with Af-c and auto exposure, I believe it is in dpr's own review

Direct link | Posted on Nov 26, 2014 at 23:54 UTC
On Ten things you need to know about the Sony Alpha 7 II article (263 comments in total)

What? dpr already got one on hands?

Direct link | Posted on Nov 26, 2014 at 23:42 UTC as 75th comment | 2 replies
On Not dead yet: Sony announces three A-mount lenses article (123 comments in total)
In reply to:

Cheng Bao: "Based on CIPA standards. Compensates for angular shake (pitch and yaw). Measured using a Sonnar T* FE 55mm F1.8 ZA lens, with long exposure noise reduction off."

Wondering what the long exposure noise reduction to do with IBIS cipa rating.

Doesn't long exposure noise reduction is done after exposure?
Which take a black photo with shutter closed for same duration, then subtract any hot pixel from original picture.

Direct link | Posted on Nov 26, 2014 at 22:19 UTC
On Not dead yet: Sony announces three A-mount lenses article (123 comments in total)
In reply to:

steelhead3: The lens is G rated...higher than the Zeisses.

sony have 85G f1.4 copied from minolta for a short while before 85ZA come out

Direct link | Posted on Nov 26, 2014 at 20:24 UTC
On Not dead yet: Sony announces three A-mount lenses article (123 comments in total)
In reply to:

spzphoto: That's really disappointing. $1150 for a 70-300 f4.5-5.6? That doesn't even have OSS or a Zeiss sticker?
Come on Sony...

First, it is G class, same level with L class
Second, the MTF is better than L counter part

http://www.sony.jp/products/picture/y_SAL70300G2_MTF.jpg
http://www.usa.canon.com/CUSA/assets/app/images/cameras/lenses/EF70300_LISU/sampleimg/mtf_tele.jpg

Direct link | Posted on Nov 26, 2014 at 19:35 UTC
On Not dead yet: Sony announces three A-mount lenses article (123 comments in total)
In reply to:

M Jesper: Oh boy $1150 for a F4.5-5.6 tele, let the shitstorm begin ..

what about $1445 F4-5.6 tele of same range? which bears brand as "Canon"

Direct link | Posted on Nov 26, 2014 at 17:49 UTC
On Not dead yet: Sony announces three A-mount lenses article (123 comments in total)
In reply to:

spzphoto: That's really disappointing. $1150 for a 70-300 f4.5-5.6? That doesn't even have OSS or a Zeiss sticker?
Come on Sony...

Canon 70-300mm f4-5.6 IS L is more comparable and currently has $1449 price tag

Direct link | Posted on Nov 26, 2014 at 17:31 UTC
On Not dead yet: Sony announces three A-mount lenses article (123 comments in total)

"Based on CIPA standards. Compensates for angular shake (pitch and yaw). Measured using a Sonnar T* FE 55mm F1.8 ZA lens, with long exposure noise reduction off."

Wondering what the long exposure noise reduction to do with IBIS cipa rating.

Direct link | Posted on Nov 26, 2014 at 17:26 UTC as 32nd comment | 2 replies
In reply to:

Rooru S: Anyone here knows if the Continuous Drive speed of 5 fps is with AF-C? or just the usual AF-S first shot and the rest AF locked?

Even A7 can do 5 fps with AF-c and AE unlocked.
A7II can't be worse

Direct link | Posted on Nov 25, 2014 at 20:30 UTC

The lens read:
1,8-4,9/10,4-37,1

That's definitely not rx100 III as dpr reported

Direct link | Posted on Nov 25, 2014 at 20:20 UTC as 169th comment | 1 reply
In reply to:

Ontario Gone: And this is the beginning of SkyNet...

And Matrix

Direct link | Posted on Nov 24, 2014 at 19:42 UTC
In reply to:

Jeff Fenske: Great to see, but they're still *stuck in 3:2*, though, which seems unnecessary now that the mirror box is gone.

Why not implement a *multi-aspect* ratio sensor to capture more of what the lens sees? Many shots are better in 4:3, and achieving a native field of view in 16:9 is a great benefit too.

An *oversized* square or round sensor would be the ultimate — capturing everything the lens sees, and making tripod repositioning from landscape to portrait (or vice versa) unnecessary.

multi-aspects means you always waste some sensor area no matter which aspect you choose, that's counter productive esp. on larger sensors. Panasonic already dropped multi-aspect on their true 4/3 inch line. Panasonic and Canon only have multi-aspect sensor on their fixed-lenses camera, so the cost by wasting sensor area could be compensated by reduced image circle of lenses, and more cost could be saved by re-using existing sensor product instead of creating a brand new one.

So far, neither the conditions exists for full-frame E mount camera.

Direct link | Posted on Nov 22, 2014 at 18:05 UTC
In reply to:

vesa1tahti: No time lapse, no bulb = useless

@abortabort
where can I see info about live bulb on a7s?
I know live bulb on e-m5

Direct link | Posted on Nov 20, 2014 at 18:58 UTC
In reply to:

vesa1tahti: No time lapse, no bulb = useless

My A7 has bulb mode, just rotate shutter speed dial on S or M mode, you will see it.

and with a little $, you can have time elapse app, or free app from china portal for time elapse LE

Direct link | Posted on Nov 20, 2014 at 16:45 UTC
In reply to:

RichRMA: The first of its kind? How does it differ from the Olympus 5-axis unit?

It moves a sensor 4 times in size of olympus 5-axis

Direct link | Posted on Nov 20, 2014 at 06:15 UTC
Total: 124, showing: 1 – 20
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