Cheng Bao

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

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Total: 352, showing: 1 – 20
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As I remember previous RED dragon achieve the high DR score by combine multiple shots into one RAW, which is similar to what DXO one does. While although other vendors may have some feature, however, they don't output the multi-shot to raw file, so they are excluded from DXO ranking.

This one may also the fruit of this maneuver.

Link | Posted on Jan 11, 2017 at 21:56 UTC as 30th comment | 3 replies
On article Sony Xperia XZ camera review (96 comments in total)

Does US version have fingerprint reader?
I heard it's a big let down because sony excluding that feature

Link | Posted on Nov 26, 2016 at 03:15 UTC as 25th comment
In reply to:

Superka: 60db is 20 stops of DR! Wow, I'll take two!
There is a table:
https://en.m.wikipedia.org/wiki/Dynamic_range
But if this DR is due to different pixel exposure, than the resolution will suffer, perhaps?

They calculate the DR from db in different way.
It is about 6 db as 1 stop of DR

i.e. Aptina 14M sensor used in nikon 1 has 79db pixel dr. Which measured up to 10.6 stops pixel level

Link | Posted on Nov 9, 2016 at 16:17 UTC
In reply to:

MLPeters: I recently attended PhotoPlus Expo in New York and questioned Sony Rep about Alpha mount and A99II.
I expressed my concerns:
Length of time for A99ii to be announce vs. the number A7 advancements and announcements.
Third Party Vendor announcements/advancements of A-mount lenses, add-ons, cine peripheral, products in general, etc... (Seems like we have an E-mount feature announcement every week.
Here's the response I received:
A-mount users need to see the writing on the wall
Sony had a bunch of leftover parts and decided to put A7rii guts in A99ii
Sony just looking to appease A-mount diehards, and save face of the Sony Artisans who preach A-mount.
The real world comparisons to A7rii vs A99ii will certainly tell the true story.

A68 increase the the AF points from 15 points to 79, cross from 3 to 15.
Also the flash power INCREASED by 40%, instead of HALVED as seen on D3400.

Link | Posted on Nov 1, 2016 at 19:23 UTC

looks like not enough cushion for lenses

Link | Posted on Oct 14, 2016 at 19:33 UTC as 41st comment | 13 replies
In reply to:

kristof93: Won't this kill low light performance?

The SME-HDR applies only to video shooting, so it is surely can be turned off for stills.

Link | Posted on Oct 13, 2016 at 21:20 UTC
In reply to:

kristof93: Won't this kill low light performance?

It will. But it can be turned off.

Link | Posted on Oct 13, 2016 at 15:40 UTC
In reply to:

Mariano Pacifico: Why can't we have that technology in big-boys camera? Why the incremental baby steps offerings?

This implementation is get HDR photo in single exposure. Not like big-boys with got HDR in multi-exposure.

Also big-boys get HDR by controlling the exposure time of each frame, not the aperture. Otherwise, you have to merge photo with different depth-of-view, which would be undesirable.

Link | Posted on Oct 13, 2016 at 15:39 UTC
On article UPDATED: Sony RX100 Mark V real-world samples (275 comments in total)
In reply to:

noisephotographer: I think the next step should be a point and shoot with a 1.2" sensor (like the Panasonic Lx100 which has a 4/3" sensor, but it uses only the area of a 1.2" or 1.25" sensor). A point and shoot with a 1.5" sensor is possible, too (Canon G1x II) , but that might be too large. I don't know whether a 1" point and shoot with f/1.4 - f/2.2 or f/1.8 - f/2.2 would be possible, but that would be very interesting for less depth of field.

It is 1" type by industry standard, read this
https://www.dpreview.com/articles/8095816568/sensorsizes

Link | Posted on Oct 12, 2016 at 02:28 UTC
On article UPDATED: Sony RX100 Mark V real-world samples (275 comments in total)
In reply to:

princecody: What is the max C-AF?

Sony really should put that fast focus/fps feature into rx10iv first. Which makes more sense than rx100v

Link | Posted on Oct 11, 2016 at 22:29 UTC
On article UPDATED: Sony RX100 Mark V real-world samples (275 comments in total)
In reply to:

noisephotographer: I think the next step should be a point and shoot with a 1.2" sensor (like the Panasonic Lx100 which has a 4/3" sensor, but it uses only the area of a 1.2" or 1.25" sensor). A point and shoot with a 1.5" sensor is possible, too (Canon G1x II) , but that might be too large. I don't know whether a 1" point and shoot with f/1.4 - f/2.2 or f/1.8 - f/2.2 would be possible, but that would be very interesting for less depth of field.

4/3 does mean the sensor is 4/3" type sensor
http://www.four-thirds.org/en/fourthirds/whitepaper.html
"The Four Thirds Specification defines the standard diagonal length of the 4/3-type image sensor, suitable image circle of lens and an interface between lens and body."

Link | Posted on Oct 11, 2016 at 22:22 UTC
In reply to:

ButtonEyes2016: I am so glad I left Sony's mirrorless system. After the Next-6 and the a6000, Sony has become greedy. The price on this is outrageous and the benefits for the additional $400 over the a6300's price aren't worth it. I'll stick with Nikon, thanks.

Compare to Eos M5, I found similar specced A6000 is very reasonable priced as half price of M5

Link | Posted on Oct 7, 2016 at 04:54 UTC
In reply to:

Timbukto: Compare Sony body progression from NEX 5N, NEX 6/7, to A6000. Then compare the progression from A6000, A6300, A6500.

Perhaps smarter pricing model for them, but not consumer friendly. We have gone from a more mainstream consumer market where one can upgrade after a few years for the *same* price to get more technical capability, to a boutique market where one can upgrade at substantially higher pricing for more modest increases in technical capability.

3-4 years ago I ditched a Canon 6D setup for a Sony A6000 just to take advantage of the portability/size while also carrying diaper bags around (also kept an EOS-M and its 22mm f2 which I probably ended up liking more anyhow). Now I'm repeating the same situation with diaper bags, but there is no A6000 equivalent now...except the very *same* A6000! So it looks like I *won't* be trading in my budget Nikon FF for any new mirrorless because any new mirrorless is ridiculously expensive nowadays.

How about upgrade from D3300 to D3400?

Link | Posted on Oct 7, 2016 at 04:06 UTC
In reply to:

evilmagicnut: OMG Sony finally made the camera I've wanted for the past 2 years. Tactical error! Now I'll never buy Sony FF :)

wait for FF counterpart of A6500.

Sony already drop the hint with A99-2.

Link | Posted on Oct 6, 2016 at 17:35 UTC
In reply to:

Cheng Bao: No sd card slot, no buy.
Why phone companies brag about their camera abilities and in same time limiting the storage capacity for their cameraes?

But you can't keep them on your phones

Link | Posted on Oct 4, 2016 at 21:21 UTC

No sd card slot, no buy.
Why phone companies brag about their camera abilities and in same time limiting the storage capacity for their cameraes?

Link | Posted on Oct 4, 2016 at 20:44 UTC as 25th comment | 15 replies

"The performance of the 1.48x (35mm equivalent) high-magnification"

typo I believe, it should be The performance of the 1.48x (0.76x in 35mm equivalent) high-magnification

Link | Posted on Sep 19, 2016 at 19:42 UTC as 76th comment | 1 reply
On article Lenovo Yoga Book features unique 'on-demand' keyboard (90 comments in total)

It is nice to have OS options for windows and android, it would be nicer if we can "dual boot", that we can choose OS from same device.

Link | Posted on Sep 2, 2016 at 17:28 UTC as 29th comment | 2 replies
On article Lenovo Yoga Book features unique 'on-demand' keyboard (90 comments in total)

pointless "feature"

If I want to draw something "on screen", why not directly draw them "on screen"?

Lenovo gives up physical keyboard's force feed back, retains bulky and weight and more cost as a physical keyboard to achieve a pointless goal?

Link | Posted on Sep 2, 2016 at 17:26 UTC as 30th comment
In reply to:

Cameracist: "5-axis electronic video stabilisation"
...how is that even possible? O.O

If you can do x+y by math, you can do yaw + roll + pitch.
If x is (1,1) to (2,1), (1000,1000) to (1001,1000),
Yaw is (1,1) to (2,1), (1000,1000) to (999,1000)
Roll is (1,1) to (2,0), (1000,1000) to (999,1001)
It is video IS , you have a lot of redundant pixels to deal with.

Link | Posted on Sep 2, 2016 at 03:38 UTC
Total: 352, showing: 1 – 20
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