December 21, 2014, 06:25:49 PM

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Messages - weixing

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1
Lenses / Re: Review: Canon EF 100-400mm f/4.5-5.6L IS II
« on: Today at 10:07:34 AM »
Hi,
Anyone that sticks this lens on a 7D2 will like it, a lot.   This is 7D2 and 100-400 V.2 at 100% crop -- OOC jpeg.
    By the way, have you try using 7D2 + 100-400mm II + 1.4xTC?? 7D2 can only use center AF point at F8, but I was wondering can 7D2 use other AF points at 420mm F7.1 (100-400mm II @ 300mm + 1.4xTC)??

   Have a nice day.

2
Lenses / Re: Review: Canon EF 100-400mm f/4.5-5.6L IS II
« on: Today at 04:08:34 AM »
Anyone that sticks this lens on a 7D2 will like it, a lot.   This is 7D2 and 100-400 V.2 at 100% crop -- OOC jpeg.

Some serious onions in that bokeh.

Thank you for this quick sample!
Hi,
    The onions is call "diffraction pattern" which will appear on bright pin point of light that is out of focus. Telescope user use the "diffraction pattern" generated at high magnification to judge the optics quality of their telescope... this is call "Star Test".

   Have a nice day.

3
Lenses / Re: EF 100-400mm II - first impressions
« on: December 19, 2014, 01:27:02 AM »
Hi,
    Any 7D2 user with the EF 100-400mm II and 1.4x TC??

   According to TDP, the aperture at 300mm for this lens is F5.0, so with 1.4x TC, it'll be 420mm F7.1. 7D2 can only use the center AF point at F8, so just wonder will 7D2 able to use other AF points at 420mm F7.1??

   Have a nice day.

4
Hi,
   Hmm... may be Canon service center had report enough case for Canon to cause concern and issue this warning??

   Have a nice day.

5
Lenses / Re: Review: Canon EF 24-105 f/3.5-5.6 IS STM
« on: December 18, 2014, 12:09:35 PM »
I could easily see a 6D2 or 5D4 bundled with this lens going forward, particularly if Canon pushes video as a reason to buy future bodies.

I could see the 6D being kit with this new lens for sure.  But the 5D line is a huge bump in price, features, and expectations -- that brand will likely only be kit (by Canon) with an L zoom of fixed max aperture.

- A
Hi,
    If they lower the kit price, why not? I think we'll know by next year April...

    Anyway, if the next FF DSLR get this lens as kit, may be Canon had plans for Canon EF 24-105mm F4L II...

   Have a nice day.

6
Canon EF Zoom Lenses / Re: Canon 100-400mm f/4.5-5.6L Mark II
« on: December 17, 2014, 08:56:37 PM »
Hi,
The lens has a locking (friction) ring that locks it at any focal length.  If it is not tightened before pointing up or down, the lens may tend to creep.  mine is new and still stiff, but after it gets worn in, I'd expect that it would need the friction.
   Can lock at any focal length... good... this is one feature that I want to confirm before consider this lens.

   Have a nice day.

7
Canon General / Re: Canon USA Addresses the Gray Market
« on: December 17, 2014, 01:22:19 PM »
Canon USA, UK, etc are their own P&L centres. Why should they cross subsidise via way of a warranty an item bought from another country. 

Simple answer: ONE company. ONE world. ONE global economy. Not only for Canon, companies, makers, sellers of products. But also for us, buyers, customers.  8)

We don't tell Canon in what countries to manufacture their products. Canon is in no position to tell us, their customers, where to buy their products - as long as they come from their factories. They should be grateful when we spend our money on their products rather than on those from competitors. It would be in Canon's own best interest to keep us, their customers as happy as they possibly can. That includes the very best aftersales service they can possible pony up and offer to us. For all their products, for all their customers, no matter where we live, work and purchase Canon products.

Fair is fair.

While that it a ideal view, its not a realistic one, not at least until all countries come up with the same regulations, same taxes, same liability laws, etc.  Companies have separate P&L centers because they have to deal with the different laws and tax rates.
 
In fact, its not one world.  Here in the USA, its not even one country, each state has its differing laws and  differing taxes.  Politics plays a huge part.  At least, some laws are common, so that makes it possible to sell the same product in most states, but some products can only be sold in certain states.
Hi,
    I still remember a few years back when astronomical products in my country was very expensive (easily double the price of the selling price in USA) and quite a few USA major astronomical manufacturer told their online retailer that they are not allow to sell outside USA when we try to place order. As a result, those USA virtual address shipping service become very popular in our local astronomy community.

   Have a nice day.

8
Canon General / Re: Canon USA Addresses the Gray Market
« on: December 17, 2014, 01:06:09 PM »
Hi,
There are fake 800Es circulating (for those for whom the real ones weren't bad enough). A warning has been issued by Nikon.

https://nikoneurope-en.custhelp.com/app/answers/detail/a_id/63056
    Not sure is it true or not, but I have heard story that some fake Canon 5D3 appear in China which come with an APS-C sesnor... althought I think it's quite unlikely, but looking at this, may be it's true...  :o

    Have a nice day.

9
EOS Bodies / Re: High Megapixel Camera Coming in 2015 [CR3]
« on: December 17, 2014, 08:04:04 AM »
Hi,
   I bet it won't call "3D"... hmm... unless it can also shoot 3D photo...  ;D

   Have a nice day.

10
Canon General / Re: Canon USA Addresses the Gray Market
« on: December 17, 2014, 07:58:44 AM »
...
Canon had many offices and service centers in many country and all of them are local company that need $$ to operate, so why you expect the local Canon company to service your under warranty Canon product FOC
...
But that "local company" business structure was not the decission of the customer but of Canon.
So it's the opinion of thos complaining here that Canon has to deal with that and not that the customer has to suffer from this.

An original Canon product is an original everywhere in the world.
And the world no longer is "local", it's "global".
Hi,
    But Canon didn't force customer to buy their products. Every company had their own terms and condition and if you don't agree to them, don't buy their products... the choice is yours. If you want to buy gray product, go ahead, but just don't expect them to honor the warranty... the choice is still yours.

    Anyway, ideally, it's "global", but not everyone use the same currency, not everyone speak the same language, not everywhere had the same law, not everywhere had the same culture and you still need a passport when travel to other country, so it's still "local" in the real world.

   By the way, the funniest warranty I every read is from pelican case warranty: "This guarantee does not cover shark bite, bear attack, or children under 5." Children under 5 is as destructive as shark bite and bear attack... ha ha ha  ;D

   Have a nice day.

11
Canon General / Re: Canon USA Addresses the Gray Market
« on: December 17, 2014, 06:54:18 AM »
Hi,
    I'm not surprise and don't understand why people here upset about it. Canon had many offices and service centers in many country and all of them are local company that need $$ to operate, so why you expect the local Canon company to service your under warranty Canon product FOC when you live here but buy from another country?? It's simple, if you decided to buy a gray product, you also must accept the risk of not having a local warranty.

    Anyway, just be careful when buying a gray product as not all Canon product had the same specification... For example, Canon 6D(WG) had Wifi and GPS, but Canon 6D (N) do not.

    By the way, Canon product in USA are a lot cheaper than in my country, but I usually don't buy expensive products with electronics and motor in it without a local warranty.

    Have a nice day.

12
Canon General / Re: Sensor life
« on: December 15, 2014, 06:51:43 AM »
Hi,
Is there something like 'sensor hours' before it goes bad?
Why assume they will go bad?  Maybe we'll discover that sensors get better with age?  Perhaps in 100 years time artists will covet the sensors from the early 2000's for their colour shifts, dead pixels, CFA fading, sun damage, laser damage, accumulated background radiation exposure etc etc?  All of these should give each sensor a unique signature that sets it apart from the mainstream, making them very valuable.  In fact, I'm going to start stocking up now.
    Yes... better stock now. In 50 years time, the king of "Canography" will be 1D4 or may be 1DX.... ha ha ha  ;D

   Have a nice day.

13
EOS Bodies / Re: Using full frame lens on crop body cameras ?
« on: December 15, 2014, 06:42:49 AM »
Hi,
+1 to Joey.  That is probably the best explanation I've ever heard and also one of the most intelligent arguments I've seen on a forum in years.  I had actually believed that none sense about depth of field on crop bodies until now. Thanks
    Actually, it's not nonsense, it's just that most people assume that the image framing is the same (same field of view) when mentioning the depth of field on crop camera.... to get the same image framing (same field of view... eg. half body portrait on FF camera = half body portrait on crop camera), you need to be further away from the subject or use a shorter lens at the same distance... which will increase the depth of field.

   Have a nice day.

14
EOS Bodies / Re: Focus problems with the Canon 7DII?
« on: December 12, 2014, 06:44:44 AM »
Has anyone else had this happen, and if so, what did you do?

Interesting, because I would have expected the exact opposite: My single-point 6d/60d completely screw up in falling snow because with just one piece of information, the camera cannot decide if it's a subject or "gras/snow/... in front of subject" lock. I'd guess that with multi-af, the camera should be smarter, at least in theory.

The camera did nothing when you pushed the shutter.... no hunting and no shutter release... It took me a minute or two to realize what was happening... If I pointed it at the deer, nothing. If I pointed it at a nearby tree, it worked. It was as if you had a distance switch set to focus on close objects only. (there is no such switch on the 17-55) I swapped lenses out for a 70-200 and it did the exact same thing. I tried manual focus and the shutter would release, but absolutely dead in auto-focus mode when you pointed it at a more distant object....

I am going to have to re-read the AF system manual and see if the various setting have any impact.
Hi,
    My country don't snow, so can't test, but will rain very heavily... hmm... may be I'll test shooting the rain and see what happen (don't ask me to test the weather sealing of 7D2 because I'm not weather sealed... ha ha ha ) :P Anyway, there are so many possible condition out there that the camera AF will face, not surprise if there are certain condition that the testing procedure miss that will cause the AF system to be confuse.

    By the way, this guy 7D2 seem ok shooting in blizzard... http://www.foto-buzz.com/index.php?script=page&id=77&type=fotoskool

    Have a nice day.

15
EOS Bodies - For Stills / Re: 6D vs 7D mark II
« on: December 09, 2014, 03:44:34 AM »
Hi,
   IMHO, if you seldom shoot action and birds, get a 6D. No point trading IQ for fast frame rate and AF system if you don't need it most of the time.

   Have a nice day.

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