lhkjacky

Lives in Hong Kong Hong Kong
Works as a Electronic Engineer
Joined on Jan 26, 2009

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Total: 151, showing: 1 – 20
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On article Sony SLT a99 II Review (1493 comments in total)
In reply to:

Hunting light: Question - shooting stills in APS-C mode - how many megapixels? How many fps?

According to Imaging-resource test, A99mk2's buffer can take 25 uncompressed RAW and it take 34s to clear. So it is about 60MB/s.
It is better than A7Rii 36MB/s, but still a little bit slow in current standard.
For example, 5d mk4 can clear at 78~79MB/s with same SanDisk Extreme Pro 95MB/s.

Link | Posted on Feb 22, 2017 at 14:16 UTC
On article Sony SLT a99 II Review (1493 comments in total)
In reply to:

entoman: The overall impression I get, from reading all the reviews, and all the forum comments here and elsewhere, is that the a99ii AF is CAPABLE of hitting focus accurately and tracking fast erratic subjects accurately, but that it requires very specific settings (and hence a lot of experience and a lot of familiarity with the Sony AF guidelines) in order to achieve a high keeper rate.

The point that many seem to be missing, is that some other systems, particularly Nikon's 3D tracking sytem in the D500, can achieve the same or better keeper rates, WITHOUT needing the myriad of "focus cases" used by Sony and Canon. The Nikon system just seems to work, straight out of the box. In other words, it is a more INTELLIGENT system, requiring less user input than either the Sony or Canon systems.

I have no personal experience of D500 or a99ii, but that is the overall impression I get from all the reviews and forum comments......

+1 ,
In the review, they should compare camera in the same category & similar price. Why don't they compare the A99mk2 with D810, 5D mk4, 5D sr & A7RII ? But they choose to compare the AF with the US$6500 D5 ??
Why don't they compare the video quality, resolution, dynamic range, size, price with D5 ?

Link | Posted on Feb 22, 2017 at 06:57 UTC
On article Sony SLT a99 II Review (1493 comments in total)
In reply to:

Hunting light: I guess, or at least hope, that some of the issues found/mentioned, can be fixed or improved, with a software update.

What surpriced me the most, was the issue with small buffer. After the A77 story, where they sort of solved the issue with small buffer in the new A77II, I was 100% sure that Sony would avoid such an issue, one more time, on a sport/actioncam/all-round camera. But no.

I really miss the Sony in many ways. The swivel-flipscreen, the fact that you have all the info you need in your eye, and the fact that you can change almost every settings, without taking your eye from the subject in focus.

So I will wait and see, if Sony have a quickfix for the mentioned issues, and if they launch new lenses, which is needed.

A99mk2's buffer can shoot 54 (RAW + JPG ) at 42mp under 12fps burst mode and 57 (RAW + JPG ) at 42mp under 8fps burst mode.

The A77mk2's buffer can shoot 27 (RAW + JPG ) at 24mp under 12fps burst mode.

The Canon 5d mk4 's buffer can only shoot 13 (RAW + JPG ) at 30mp under 7fps burst mode.

Link | Posted on Feb 22, 2017 at 06:50 UTC
On article Sony SLT a99 II Review (1493 comments in total)

A99mk2 review by David Schloss (Digital Photo Pro)
https://youtu.be/6Xr_HEEyuDI

About David Schloss:
http://www.davidjschlossphoto.com/about

Link | Posted on Feb 20, 2017 at 14:16 UTC as 50th comment | 1 reply
On article Sony SLT a99 II Review (1493 comments in total)
In reply to:

Hunting light: Question - shooting stills in APS-C mode - how many megapixels? How many fps?

If you shoot in APSC mode, you can shoot 128 (RAW+JPG) at 12fps before the buffer full. It is about 11 sec buffer time for (RAW+JPG).

If you shoot JPG only, it will be about 200~300 shots.

Link | Posted on Feb 19, 2017 at 06:41 UTC
On article Sony SLT a99 II Review (1493 comments in total)
In reply to:

PerL: Interesting that the theoretical advantage of the SLT-concept in AF doesn't seem to pay off. Despite the mirror blackout the traditional DSLRs does better.

@Rishi, Why are you including a 3 years old review on a unrelated camera?
Also the link above was using the oldest firmware of A77mk2.
The writer stated clearly they don't have chance to try the new firmware.

Imaging Resource has done the testing on the new A99mk2.
Why don't you link it here ?

Imaging-Resource: Sony A99 II Review
Quote "Comparing the A99 II to other high-end SLR cameras I've used recently, including the Nikon D5 and D500 DSLRs, the A99 II's continuous autofocus performance felt very comparable. In terms of speed and accuracy, the A99 II felt capable of keeping up with the latest flagship Nikon cameras. I can't comment on how it compares to Canon DSLRs as I didn't have any on hand, but my point is that the A99 II's autofocus, both single-shot and continuous, is very good and certainly up to the tall task of competing with the excellent autofocus system in the latest Nikon DSLRs. "

http://www.imaging-resource.com/PRODS/sony-a99-ii/sony-a99-iiA.HTM#shooting2

Link | Posted on Feb 17, 2017 at 23:58 UTC
On article Sony SLT a99 II Review (1493 comments in total)
In reply to:

cresulka: I don't get the endless discussion here. So Sony produced a lemon, so what?

Nobody is forced to buy the camera and it is at least an improvement over the outdated original a99 for the few remaining A-mount users (the people this camera was designed for)

Does the camera do what you need or want? Fine, go buy it if you want to.
Does it not do what you need or want? Fine too, go buy something else if you want to.

@runbei99,
You are comparing the RX10 with A99mk2 ????
I guess you know that RX10 series only use CDAF and a tiny tiny sensor.

Why don't you go & buy the Nikon DL series ?
Oh, wait... where is the DL series ??

SLR Lounge: THE SONY A99II
https://www.slrlounge.com/the-sony-a99ii-pro-sports-photographer-davey-wilson-pits-it-against-the-d5-1dx-mark-ii/

Imaging-Resource: Sony A99 II Review
http://www.imaging-resource.com/PRODS/sony-a99-ii/sony-a99-iiA.HTM#shooting2

Link | Posted on Feb 16, 2017 at 22:54 UTC
On article Sony SLT a99 II Review (1493 comments in total)
In reply to:

bernarte: Sometimes, reviewers make mistakes, too. The best thing DPR can do is evaluate their scoring system which has become so out of touch with reality.

87% Gold for the 5D IV
85% Silver for the A99 II and A6500
85% Gold for the A6300

Something is really disturbingly wrong here.

If you read this comments from DP staff, you will understand why.
https://s26.postimg.org/fss96lyxl/2017_02_15_083108_cr.jpg

Link | Posted on Feb 16, 2017 at 09:59 UTC
On article Hands-on with the Canon EOS Rebel T7i / EOS 800D (66 comments in total)
In reply to:

Donnie AI: I think the update is decent. The autofocus system is a big step up. (Not sure about it's tracking capabilities, but I hope it's good enough to give justice to the 6 FPS burst it has) Sensor wise, should be still behind Nikon / Sony IMO.

The only deal breaker for me would be the $750 price tag. Nikon's D5500 should be just about $600 now and Sony's A6000 around $550. Though for sure it should go down for the following months to come.

If they can add 4K, yes it will be great. Though for sure the prices will be around $1000. For me, what I would like to see is Focus Peaking, A Pentaprism Viewfinder with 100% coverage and a new set of EF-S Lenses.

The A68 is also less than $550
24MP, 79 AF points, 8fps, 1080P 50mbps XAVCS,
It also build in IBIS, peaking, zebra, MFA, MFNR, EYE AF, etc.

Link | Posted on Feb 16, 2017 at 03:31 UTC
On article Sony SLT a99 II Review (1493 comments in total)
In reply to:

whiteheat: " For those that love SLT, the a99 II is definitely worth a look, but for those that need a solid all-rounder, or a lens selection beyond A-mount, the complications of SLT may not be worth the advantages."

I've been using Sony SLT DSLRs for years. I've never encountered ANY problems or complications with the SLT mirror system - probably the opposite compared to what could have occurred had I been using a traditional flip mirror system. I wonder what 'complications' are being referred to here?

@brendon1000,
You should read the manual how to clean the SLT mirror.
Without the SLT mirror, all those dust will be on the sensor,
will you use the lens brush to clean the sensor ??

Link | Posted on Feb 15, 2017 at 04:40 UTC
On article Sony SLT a99 II Review (1493 comments in total)
In reply to:

Average User: When I read the review, and many of the comments below, I come away feeling that DPR reviewers (who are themselves mostly Nikon and Canon users) don't use the Sony equipment enough to be comfortable with the menus or the function of the cameras. We obviously don't want "fanboy" reviews. But as users get to know their cameras, they do get a lot better at getting the best from them. After reading reviews from capable actual users who have spent more time with the A99II, it does seem that DPR's reviewers may have missed how to get the best from the auto focus.
Of the three technologies: DSLR, SLT and MILC, it does seem MILC and SLT techs are not as well developed as the older DSLR, and if continued will get better. So we should all hope that happens. In fact, even though the older DSLR tech is more finely tuned, comparable Canikons also have serious weaknesses of their own. So I appreciate the A99II as a truly excellent alternative.

@Rishi,
How many % of time do you use Sony A-mount (SLT) camera?
I guess 0% or never.
Likely last time you touch a Sony A-mount SLT is 3 year ago when doing the A77mk2 review.
Clearly you are not familiar with A-mount SLT camera.

Link | Posted on Feb 15, 2017 at 00:11 UTC
On article Sony SLT a99 II Review (1493 comments in total)
In reply to:

rbach44: Playing the devil’s advocate here, but I’m trying to get an answer too: Whats the point of the SLT concept?

Its like mirrorless without the size/adaptability advantage (The two big advantages of mirrorless to me). It seems weird to have a camera with the bulk of an SLR but without an optical viewfinder.

Are there people that prefer EVFs to OVFs? I was never comfortable with them. I went mirrorless twice and ended up going back to SLRs each time. Even good EVFs feel like I’m looking at a computer screen with my scene on it.

Also, is the supposed advantage in AF functionality that great? My D600 has more than useful AF, my old D700 was a beast, and the pro Canikons are unbelievably good in this area. Remembers the 9 point AF that pros would use for sports back in the day? Are these new complex systems THAT necessary?

It seems like a solution looking for a problem to me, but I may be missing something. People seem to really like them. Perhaps I’m officially an old SLR fogey.

The advantage of SLT is it combine the advantage of DSLR & Mirrorless camera.
The biggest advantage of DSLR is the Dedicated PDAF and bigger body for better control & ergonomic .
On the other hand, the biggest advantage of Mirrorless is EVF and quiet shutter, no more shutter shock from flapping mirror.
SLT combine the advantage from both "Dedicated PDAF" + "EVF"

Link | Posted on Feb 14, 2017 at 16:16 UTC
On article Sony SLT a99 II Review (1493 comments in total)
In reply to:

rbach44: Playing the devil’s advocate here, but I’m trying to get an answer too: Whats the point of the SLT concept?

Its like mirrorless without the size/adaptability advantage (The two big advantages of mirrorless to me). It seems weird to have a camera with the bulk of an SLR but without an optical viewfinder.

Are there people that prefer EVFs to OVFs? I was never comfortable with them. I went mirrorless twice and ended up going back to SLRs each time. Even good EVFs feel like I’m looking at a computer screen with my scene on it.

Also, is the supposed advantage in AF functionality that great? My D600 has more than useful AF, my old D700 was a beast, and the pro Canikons are unbelievably good in this area. Remembers the 9 point AF that pros would use for sports back in the day? Are these new complex systems THAT necessary?

It seems like a solution looking for a problem to me, but I may be missing something. People seem to really like them. Perhaps I’m officially an old SLR fogey.

Personally I prefer EVF over OVF, I have switched to EVF for near 6 years now, never what to move back to OVF.
With EVF you can show histogram, peaking, zebra pattern, focus magnification, record video, etc. on the viewfinder.
EVF is WYSIWYG, no more chimping.
You know the image will get correct exposure, white balance before you press the shutter button.

Link | Posted on Feb 14, 2017 at 16:09 UTC
On article Sony SLT a99 II Review (1493 comments in total)
In reply to:

SurfFish: Thank you for the Review Rishi, Sam, and DPR team good job!

Can you expound on the last (*) statement on page six?
"* With screw-drive lenses, on-sensor PDAF points will not even attempt to refocus if there are drastic changes in depth of the subject that's under your AF point(s)."

I can't seem to duplicate your problem. Also can you provide the Priority setting in AF-C, AF drive speed as well AF tracking sensitivities or settings on how these various AF performance tests were done? Like the 1DX review you had were you explained how the af would fail under such settings. Thanks again!

"on-sensor PDAF points will not even attempt to refocus if there are drastic changes in depth of the subject "
The screw-drive lens they tested likely are the 135mm F1.8 & 85mm F1.4.
IMO, it is reason of the shadow DOF & OSPDAF can't make focus measurements from extreme defocus. It is the limitation of OSPDAF.
I don't think it is related to screw-drive lenses.

Link | Posted on Feb 14, 2017 at 02:41 UTC
On article Sony SLT a99 II Review (1493 comments in total)
In reply to:

OlyPent: Notice that at high ISOs (since these are essentially still cameras) the Pentax K1 is cleaner (3200-12500) by what looks like almost a stop though the Sony has a bit more resolution.

The default setting is Pixel Shift, you should change it to Normal for fair comparison.

A99mk2 vs K1 vs A7RII vs D810 (ISO51200):
https://s26.postimg.org/onapy5u6x/Compare_3.jpg

Link | Posted on Feb 14, 2017 at 02:27 UTC
On article Sony SLT a99 II Review (1493 comments in total)
In reply to:

Ralf B: This post https://www.dpreview.com/forums/post/59120737 says enough.

@jaykumarr,
There is a setting called "AF Track Sens".
"1 (Lock-on)" ~ "5 (Responsive)"

If you half pressed the shutter button on Player 1 and suddenly Player 2 walk pass between the camera, the focus will not jump to the Player 2 immediately.
(There will be a short period of time the AF point is on Player 2 but the focus is still remain in Player 1).
The time between shift to a new subject is controlled by the "AF Track Sens" setting.

Similarly, if you have fail to put the AF point on the subject and half pressed the shutter button. The focus will lock on to the background.
(If you check the first two image, you will see the focus is pin sharp on the background)
If you do not release the shutter button and pan the focus point back on to the player, the focus will not shift immediately, because it judge it as a new subject. Eventually, it will focus to the player, but the time is control by the "AF Track Sens" setting.

Link | Posted on Feb 14, 2017 at 02:08 UTC
On article Sony SLT a99 II Review (1493 comments in total)
In reply to:

xmeda: Put this sensor in A900 DSLR like body, get that 30% light back and we have a winner..

SLT is just SLT....

It also add back a loud shutter & shutter shock from the flapping mirror.

Link | Posted on Feb 14, 2017 at 01:49 UTC
On article Sony SLT a99 II Review (1493 comments in total)
In reply to:

OlyPent: Notice that at high ISOs (since these are essentially still cameras) the Pentax K1 is cleaner (3200-12500) by what looks like almost a stop though the Sony has a bit more resolution.

You have to choose Normal in the K1 not Pixel Shift.
Check here:
A99mk2 vs K1 vs A7R vs D810 (ISO12800):
https://s26.postimg.org/pa9mnor2x/Compare.jpg

A99mk2 vs K1 vs A7R vs D810 (ISO25600):
https://s26.postimg.org/qql55ttzt/Compare_2.jpg

Link | Posted on Feb 14, 2017 at 01:41 UTC
On article Sony SLT a99 II Review (1493 comments in total)
In reply to:

TN Args: I kind of get the impression that Sony are not working towards getting mirrorless to perform like an Olympus OM-D E-M1 MkII. Otherwise why would they bother with this camera, if they can get their A7 series to deliver 18 fps with great CAF and greatly reduced rolling e-shutter?

Obviously, Sony is working on the next level AF.
But they also know the limitation of OSPDAF.
Because dedicated PDAF is still better than OSPDAF for sport, especially under low light & telephoto lens.

Link | Posted on Feb 14, 2017 at 01:32 UTC
On article Sony SLT a99 II Review (1493 comments in total)
In reply to:

TN Args: I kind of get the impression that Sony are not working towards getting mirrorless to perform like an Olympus OM-D E-M1 MkII. Otherwise why would they bother with this camera, if they can get their A7 series to deliver 18 fps with great CAF and greatly reduced rolling e-shutter?

There are users who own both A99mk2 & EM1-MK2.
And he reported that the A99mk2 12fps has higher hit rate than EM-1 mk2 18fps. According to the user, the shot from A99mk2 is tack sharp, while most of the shots from EM1mk2 is slightly out focus.
https://s26.postimg.org/sfu8dw9p5/2679552.jpg
For sport, dedicated PDAF is still better than OSPDAF or CDAF.

Link | Posted on Feb 14, 2017 at 01:26 UTC
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