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Messages - weixing

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Third Party Manufacturers / Re: Samsung NX-1 Review
« on: December 02, 2014, 11:57:28 AM »
I have often wondered why DSLRs don't do sort of a compromise mirror function where during high fps mode (think 7D Mark II 10 fps) the camera doesn't just lock the mirror up for the second or two it takes to fire off 10-20 frames and then drop the mirror back down.  Seems silly to slap the mirror up and down 10 times a second when the viewfinder is less useful.  But I also get it and understand that a good photographer by habit can see and notice things as the viewfinder "refreshes" even though it's only a fraction of a second between frames.

Because losing a whole second or more of viewfinder time means your very likely to misframe your subject or even clip part of it out of the frame when tracking something moving. You would be surprised at how much we can see change in a fraction of a second.

That's the same reason the real-time view of an OPTICAL viewfinder is so desirable...you really FEEL the lag in an EVF when tracking a subject with continuous shooting. Until the lag time gets into the microseconds range, I personally don't think I could use an EVF for action shooting. It's one of the big things I'm curious about regarding the NX1. They claim 5ms lag, which is low...but, it's not real time, and I wonder how much I'll be able to "feel" that lag.

Totally agree jrista, just like I typically agree with almost all of your posts.  I guess I'm a fan, LOL!  Note that I did mention being able to still see what's going on during the fps action of the mirror.  However, for those times when silence is top priority, it would be nice to have this in an easier way to implement than LiveView.

I think the mirrorless design, in some form, will eventually become a standard in the industry.  And until Canon or Nikon do it in a big way, it will continue to be a niche market.  The pros won't waste time with small little wanna-be systems that can't match the full ecosystem that Canon and Nikon have offered for decades.

But the little niche systems will pave the way so to speak and flesh out the bigger obstacles and failures.  I think this is what Canon and Nikon are waiting for.

Yeah, the niche systems are the guinea pig systems. :P Hopefully they will figure out the best way to solve these problems, and the big players will copy them.

There was talk about some kind of Hybrid EVF/OVF from Canon earlier in the year. Nothing ever seemed to come from that, unless Canon is calling the Transmissive-LCD updates in the 7D II to be a "hybrid EVF" (which would be a joke.) I really want to see some kind of convertible viewfinder. There are certainly uses for an EVF, such as the need for a silent shutter without the mirror slap sound, video recording, etc. There are also uses for an OVF, such as the action photography where lag can be extremely annoying at the very least, and image-killing at worse (the A7r I rented periodically seemed to build up major lag and stutter...I could never figure out why, but sometimes the frame rate would drop into the low teens, and the lag would jump to a second or so.)

EVFs have to perform exquisitely, with say 500µs lag and no stutter ever, (and be ultra high resolution and high DR, like 8000ppi) before I would consider them as a truly viable replacement for an OVF during action shooting.

Totally agree jrista.  At some point, when does the cost of the EVF (and/or EVF/OVF) system start to cost more than the sensor itself?  Because the challenge is significant and as you say, the performance must be perfect and impressive to pull off replacing a good OVF.  In a crude way, the EVF is sort of a sensor in reverse and while the resolution doesn't need to match by any means, the performance, accuracy, sharpness and overall IQ + performance must go far beyond what we are currently seeing.
    Current mirrorless camera work very well for most photography except sports and wildlife and IMHO, the 2 main obstacles for mirrorless camera are:
1) Servo AF - tracking of moving targets and I got a feeling that NX-1 isn't working very well as most "review" seem not too "eager" to comment on it.
2) Battery life - the EVF, imaging sensor and processor are working all the time when you put you look through your EVF and that drain a lots of power.

    By the way, most LCD have problem working properly under very cold temperature, so I think it'll be a problem for mirrorless camera to make the EVF work properly under this condition.... just wonder how they solve this problem for the EVF in those video camera when shooting in very cold temperature such as at the pole??

    Have a nice day.

Technical Support / Re: Optimal processing platform of still images
« on: December 02, 2014, 05:36:58 AM »
    If availability (uptime) is importance to you, don't build your own system... get a branded system (such as HP) with upgrade warranty. It might be slightly more expensive, but it'll save you a lot of headache if your system is down.

   Have a nice day.

Lenses / Re: Review: Sensor Performance of the 7D Mark II
« on: December 02, 2014, 04:12:04 AM »
This review includes an analysis of noise, dynamic range, and full well capacity of a Canon 7D Mark II camera. The Canon 7D Mark II is the latest in the Canon (APS-C) 1.6-crop DSLR lineup. The performance is so exceptional it is a game changing camera in the Canon lineup.

When I read this at the very beginning of the review, I know I can only take it with a pinch of salt

I invite you to take a look here:


Compare it to Nikon's D7100 (direct competitor from 2013)
Select Raw > ISO 100 > [Select chunk of words in the upper-middle frame]

See for yourself which camera/sensor captured more details.

"Game changing camera" in the Canon lineup. Yea right
    Hmm... The D7100 image had better contrast, look sharper and got a bit more details (I think due to better contrast and a bit more resolution) in the fine print, but from my monitor, the fine print in the D7100 image got a lot more yellowish and blueish... is yellowish and blueish colouring in the fine print really exist in the actual scene?? IMHO, depreview should also provide an "actual reference image" for user to compare.

   By the way, we should remember that the 7D2 like the 70D is dual pixels, so it's actually a 40MP sensor in an APS-C size... with that in mind, I think the 7D2 IQ is very good... I just wonder how the IQ really look like at full 40MP... may be Canon should provide a mode (look like a new project for ML??) to output the full 40MP size image.

   Have a nice day.

Third Party Manufacturers / Re: Samsung NX-1 Review
« on: November 26, 2014, 07:09:01 AM »
   After I read the manual, my impression is that the NX-1 is like a Powershot style, interchangeable lens camera... very "simple" AF system and not much customization available.

   Have a nice day.

Third Party Manufacturers / Re: LuLa likes the Samsung NX1
« on: November 26, 2014, 06:53:48 AM »
     Very curious about how the Samsung NX1 work, so download the manual to take a look. The manual is only 222 pages and my impression is this is a very simple camera and basically no customization available, but it includes a function to email your photos... not sure is it practical as most email don't allow you to attached large file.

    Have a nice day.

Third Party Manufacturers / Re: LuLa likes the Samsung NX1
« on: November 25, 2014, 07:38:41 PM »

LuLa is impressed. A contender for the APS-C crown.
LuLa has trouble reading Samsung's spec page that they linked to in the 'review'.
Lula mentions the NX1's weather sealing, Samsung's page states;
"6 This product is not water or dust proof. It is designed to resist dust and minor splashes only. Exposure to severe conditions is not recommended."
Not impressed with LuLa.
   Top be fair, I think when most said weather sealing, it's does not mean water and dust proof... it's just mean water and dust resistance... the different will be how good is the water and dust resistance.

   The manual can be downloaded and will be interesting to take a look, but notices that it's in camera charging which I think is a big mistake... better come out with an external charger soon.

   Anyway, let the camera "race" begin... Japanese company had lost the TV "race", let see whether will they lost the camera "race" too...

   Have a nice day.

EOS Bodies / Re: 7D Mark II Amazing Custom Settings
« on: November 25, 2014, 11:50:25 AM »
I set up my camera as follows. Please note I am a bird photographer so if this does not interest you just skip over.

AF-ON button has a custom setting for Birds in Flight.  Go to the custom controls (3rd tab in the orange menu).  It should be set for metering and AF start.  Then hit the info button and 4 more options appear.  Mine are set as follows.  AF start position set to SEL.  2nd is set to AI servo case 1. 3rd is set to AI servo.  4th is set to expanded zone focus.  So basically when I hit that button I am immediately in ai servo with zone focus with the sensitivity that I set for case 1.  No excuse to ever miss a BIF shot now.

The * button is set as to sel, case 2, one shot, af area 1 point focus.  So again I hit that button and am automatically in one shot with center point focus.

I custom set the Set button to be the magnifier button at 2x.  So no need to use my left hand at all and can quickly see if I have the correct shot and sharpness that I need.

I custom set the multi controller to direct AF point selection.  so while in one shot or servo I can just move it to pick any focus point or zone that I want without pressing any other buttons.

And the AF lever I custom set to ISO.  so I just need to pull the lever and turn the main dial to quickly change ISO.  Again without taking my eye off of the camera at all. 

All of these can be done very easily while eye is on the subject.  For instance I am shooting a shore bird and am using one shot to do so with my thumb on the * and the bird takes off flying.  Now I only need to move my thumb and I can instantly track it in expanded zone and AI SERVO. 

In addition I have the shutter set to metering and af start.  This allows me to press shutter half way and I have it set to ai servo and 1 point focus.  So now I have 3 options at my fingertips.

Only shutter with ai servo and center point focus easily switched to stay on the eye with my multicontroller.

af-on with ai servo and expanded zone for BIF

and the * with one shot and center point.

Hope that helps.
    I got a similar setup, but shutter button to metering only, AF-ON to AI Servo AF only and * button with one shot AF and single point. With this 2 AF button setup, the "viewfinder display illumination during AI servo AF" option (which allow the viewfinder to flash red intermittently in AI Servo AF mode when metering is active) become very useful in low light situation where it's hard to see the viewfinder AF point and info. During such situation, you can just set to AI Servo mode and the viewfinder will flash red intermittently when the metering is active (so that you can see the AF points and info in the viewfinder) and still use one-shot AF or AI Servo AF to your shooting... but I think battery life will be shorten by quite a bit... ha ha ha  :P

  Have a nice day.

Canon General / Re: Does Canon really deserve this?
« on: November 25, 2014, 06:27:49 AM »
   Samsung strength is always their hardware, but their biggest weakness is their software (firmware in this case).
   Have a nice day.

could you be a bit more specific please - with regards to firmware-related issues of Samsung NX1?

Canon (and even more so Nikon) certainly got more than their fair share of software/firmware issues.
Especially Canon's inability and/or unwillingness to unlock and enable fairly basic and simple firmware features on their hardware (Cameras) is notorious. No focus peaking, no zebras, very poor Auto-ISO implementation in most of their DSLRs, no second curtain sync in their wireless ETTL protocol and many other software-/firmware related issues come to my mind. Just look at what Magic Lantern adds to Canon cameras that can be "hacked".

So before accepting any finger-pointing in the direction of other manufacturers, including Samsung - I'd really like to know very specifically what those issues may be in in what ways they are (even) worse than Canon's.
    I'm not saying this camera got software issue... I'm saying that base on using their current and past products,  in general, the software (or firmware) is always Samsung weakest side... they had no problem making good hardware, but always mess up on the software side.

    Have a nice day.

Canon General / Re: Does Canon really deserve this?
« on: November 25, 2014, 04:10:26 AM »
There certainly are plenty of mirrorless and software comments, and you are correct most threads start out ok and tend to get progressively worst.
It's hard for me to be objective about software as they mostly involve features I won't use, but I certainly understand why people want to untapped resources that are there. Fuji is very good at upgrading firmware on their cameras , but canon ensured f8 autofocus and that's a feature I wanted.
Now the mirrorless argument for me I don't get at the moment. The major sacrifices are af and ergonomics which are things I don't want to sacrifice. Now mirrorless will be the future but I haven't seen anything that makes me want to swap to a mirrorless as my primary camera. I have a fuji x100s which i like as my portable camera, but I wouldn't take it wildlife watching.
Now regarding criticism of Canon software and the mirrorless options to me they aren't even close to causing me to want to leave Canon, to others perhaps they are. Should those comments unnecessarily dominate many threads? I don't think so, and I find a lot of the out of place. But if they are constructive rather than complaints then good on them.

On the mirrorless option am I the only person who doesn't like smaller cameras in general?

You're not alone. I simply don't think it's feasible to use larger supertelephoto lenses with tiny bodies effectively - so even if the future is mirrorless, it needs to come in a roughly DSLR-shaped body.

It's not the biggest body, for sure...but it is the closest thing to a DSLR-sized and shaped (ergonomically) mirrorless that I've seen thus far. I have to try it out to say for sure, but I would much rather use this with a giant supertelephoto than any other mirrorless. I still think it might be a little cramped...but, so was my Rebel, and I used that with the 100-400 all the time. Samsung is also readying it's own superteles for use with this body, and  they seem to be just as large as Canon's.

This is to be welcomed.
   Samsung strength is always their hardware, but their biggest weakness is their software (firmware in this case).

   Have a nice day.

That will be an exciting lens to use on the A7 series because it won't need an adapter and will likely have fast autofocus.

With the 135 I'd hope for an STF-version. That might not make it an AF-king, likely no luck with phase detection, but the rendering of OoF areas is rather unique.
   I thought Sony already had an 135mm STF lens which they inherit from Minolta, but in alpha mount and manual focus only.

   Have a nice day.

7D MK II Sample Images / Re: Anything Shot with a 7D MII
« on: November 25, 2014, 12:50:36 AM »
Canon 7D Mk II
Canon EF 400mm f/5.6L

I'm torn ... I think I want the new 100-400 v. 2, but need to sell this sharp/fast 400 to be able to get it ...
    Hmm... nice shot, but "too clean" for my taste and your background "bokeh" miss out one small area...  ;D

    Have a nice day.

   No one having this problem??

   Anyway, after some more testing... seem like the issue will happen only at longer focal length... 350mm and longer. At focal length shorter than 350mm, it doesn't seem to happen.

   By the way, one way to make sure the lens will search focus till the minimum focusing distance is to put the lens cap on.

   Have a nice day.

EOS Bodies - For Stills / Re: Sending my 7D2 back due to high ISO noise
« on: November 23, 2014, 10:49:39 PM »
   I accidentally took some shots at ISO 12800 and after a basic NR in LR 4, it's look ok to me for web use:

  Have a nice day.

Reviews / Re: Bryan Carnathan has completed his review of the 7D Mark II
« on: November 23, 2014, 08:03:51 PM »
Well I hope Brian's knowledge of the camera is better than his knowledge of horses !

You might try reading the review before embarrassing yourself with a gratuitous negative comment.

"Perhaps even more beneficial for understanding what can be done with this frame rate is to look at a visual example. Drag your mouse over the labels under the following image for a visual look at the 10 fps rate. Drag your mouse completely across all of the labels in 1.3 seconds to get an idea of the speed of the approaching horse – approximately 40-45 mph (64-72 kph). I know, the labels are a bit small for that mouse move, but this approach happened very fast."

She would have to be riding a top form Derby winner - on the flat - on good going - with a race saddle - riding weight less than 7 stone. As I said, this target would have been travelling towards the camera at 18 mph max.
   Know nothing about horse, but are you sure horse run so slow?? Slower than most top athlete?? Hmm... I thought basically any healthy horse can out run the fastest human...

   Have  a nice day.

    I discover today an issue when using Tamron 150-600mm live view focusing with 7DII... not sure is it my copy issue only or a common issue, so may be those who had the Tarmon 150-600mm and 7DII can try this out and see whether is it a common issue.

    Usually, when the lens cannot find focus and hit the minimum focusing distance, it'll try to find focus by focusing towards the infinity, but with Tamron 150-600mm and 7DII, it'll hang at the minimum focusing distance (it'll happen regardless of the setting in "Lens drive when impossible" is on or off). Please note this only happen in live view.

    Below is the procedure that will cause this issue to show:
1) Under live view setting, set Continuous AF to Disable.
2) Now using live view, focus something closer than the minimum focusing distance.
3) Once the Tamron 150-600mm focus till the minimum focusing distance, it'll hang and won't respond on any new AF command in live view.
4) To get back to normal operation, you can: (a) switch out of live view and use normal viewfinder to achieve AF, then the live view AF will be back to normal or (b) Using the manual focus to focus till very close to focus, then your live view focus will be back to normal.

   I try the below combination, but only happen when using Tamron 150-600mm with 7DII:
1) Tamron 150-600mm with 60D: Normal operation, after it focus to minimum focusing distance, it'll try to find focus by focusing towards the infinity.
2) EF400mm F5.6L with 7DII: Same as above.

    So the issue must be with the Tamron 150-600mm. Also, the Tamron 150-600mm live view focusing is very, very slow... My EF400mm F5.6L is way faster in live view AF.
    Have a nice day.

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