October 01, 2014, 02:52:59 AM

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Messages - weixing

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76
Third Party Manufacturers / Re: DXO uh-oh?
« on: July 30, 2014, 08:28:35 AM »
Hi,
If you have kids running round a dimly lit gym? Get an A7s, because it will kill your Canon dead at 12800.
    Yes... with a 12.2MP FF sensor, I had no doubt that it'll kill all Canon dead at ISO 12800, but before you can get that killing picture, you need to first get the camera to focus on the kids running a dimly lit gym.... I don't put my bet on Sony A7s to be able to do that....

     Have a nice day.

77
Animal Kingdom / Re: Show us your Hooters (Owls)
« on: July 22, 2014, 10:22:09 PM »
Hi,
weixing, those are awesome!  The second one is really sweet and I had no idea they actually slept like that!
    Same to me... This is also the first time I saw an owl do that...

    Have a nice day.

78
Animal Kingdom / Re: Show us your Hooters (Owls)
« on: July 22, 2014, 12:59:30 PM »
Hi,
   Sleepy juvenile Spotted Wood Owl.




   Have a nice day.

79
Lenses / Re: 5D3 + teleconverter + Telescope
« on: July 09, 2014, 03:01:33 AM »
Hi,
    For your reference, I took a photo of my 6D + Teleconverter + T-Ring. Notice that the T-Ring do not contact with the teleconverter pins/contacts.

   Have a nice day.

80
Lenses / Re: 5D3 + teleconverter + Telescope
« on: July 09, 2014, 01:24:38 AM »
Hi,
Hi,
    Do you have problem if you only use the 5D3 + T-Ring??

    Although I usually don't use teleconverter (I usually use a barlow), but shouldn't be a problem... I do a test on my 6D + 1.4x Kenko Teleconverter (I don't have Canon Teleconverter) + T-Ring and it work as per normal. I look at all my T-Ring and none of them make contact with the DSLR pins.

    Have a nice day.

Not the DSLR pins, the contacts on the teleconverter. I have the same problem and taping the three TC contacts fixes the problem.
   My T-Ring never contact with the DSLR pins/contacts or the Teleconverter pins/contacts. May be you use a T-Ring not design for Astro use??

   Have a nice day.

81
Lenses / Re: 5D3 + teleconverter + Telescope
« on: July 08, 2014, 10:34:25 PM »
Hi,
    Do you have problem if you only use the 5D3 + T-Ring??

    Although I usually don't use teleconverter (I usually use a barlow), but shouldn't be a problem... I do a test on my 6D + 1.4x Kenko Teleconverter (I don't have Canon Teleconverter) + T-Ring and it work as per normal. I look at all my T-Ring and none of them make contact with the DSLR pins.

    Have a nice day.

82
Lenses / Re: RLPhotos first impressions of the 16-35mm f/4L - Video
« on: July 03, 2014, 10:33:32 PM »
Hi,
Okay, I know this is going to come off as assholish to sensitive people, but I don't mean it that way, I'm just really curious why some people do reviews like this.

I have a feeling people like to hear themselves talk or see themselves on video.  This review could have easily been done as a simple web page or even PDF.  We are coming to a time when the bandwidth we use may be regulated or charged per usage, so it only makes sense to do it in web page format to reach the maximal audience.  Secondly, a written review could be read quicker, as well as if you were only interested in a certain aspect, you wouldn't have to sit through the whole video, you could just scroll to the appropriate section.  With a video, I either have to suffer through the whole thing, or just not watch it and then miss out on important points.  If I'm at work, I can't watch thirty minutes of video, but I can sure read a written review.

Could someone enlighten me?  To me, I feel as if you're doing a review "for the people", so to speak, then you should do it to "reach the people" as easily as possible.  To give an extreme example, if I want to educate people globally about proper hygiene, I'm not going to make a 4K video, because most of the people who need educating about hygiene wouldn't even have television.  Again, a bit extreme as an example, but just trying to drive home the point and see if anyone could explain to me why these types of reviews are unfortunately so common.
   It's about personal preference of the author and what he think his target audience prefer... some like video, some like written review... Or may be doing a video is easier for the author than doing a written review... For example, why making a movie instead of writing a novel?? Because some people prefer reading a novel and some people prefer seeing a movie... best if the author got time, do both.

   Anyway, video review got their advantage because you can see the "real" item in the video. For example, when I wrote the the AF speed of the new lens is 0.5s faster than the old lens in a written review, then you might think that 0.5s improvement might not worth the amount of price increment, but when you see the old lens AF speed vs the new lens AF speed in video, you then realised that 0.5s faster is a lot faster than you think.

   Have a nice day.
     

83
Animal Kingdom / Re: Unexpected Events
« on: July 02, 2014, 01:53:24 AM »
Hi,

    This one look funny... "Did I just grow taller after eating that fish??"... ha ha ha  ;D

    Have a nice day.

   

84
Canon General / Re: DOF and Sensor Size
« on: July 02, 2014, 12:49:34 AM »
Hi,
   I usually just remember this:
Same FoV(which mean same distance and different focal length(eg. 35mm on APS-C and 50mm on FF) or different distance (FF closer than APS-C) and same focal length) and same F-Stop, FF has shallower DoF than APS-C.

   Have a nice day.

85
EOS Bodies / Re: Patent: Canon 5 Layer UV, IR, RGB Sensor
« on: June 30, 2014, 11:48:23 AM »
Hi,
   Got one question to ask: Does readout noise increase when resolution increase?

   Have a nice day.

86
Third Party Manufacturers / Re: D810!!!
« on: June 26, 2014, 10:27:26 PM »
I feel sorry for Nikon owners.
It doesn't matter what model they buy, even when first released, as a few months down the track, Nikon will bring out a new and improved version of it making your current model obsolete and now worth substantially less than it cost you. Remember the D600 then the 610?
Canon does hang onto models much longer, and hence they have better re-sale value later on as say, after 3 years, your Canon may be just superseded, but if you had an equivalent Nikon, it would be 3 models old and practically worthless.

I'm not saying that Nikon cameras are no good, in fact, they are very good indeed, but constant model updates is not how you keep up the perceived and resale value of products.
It also makes it more difficult regarding spare parts too, as many models mean lots of parts and distributors only have so much space and money for parts.

I feel sorry for people who buy cameras based on how much they can sell them for.

If your camera is in good enough condition to be sold as "mint" or "near mint" condition then you obviously haven't used it very much.

While I can understand this for lenses....for camera bodies, they are a depreciating asset. Every camera body I have bought has dropped in resale value over the three years I have owned them. The lenses i have bought have generally been worth more over time due to inflation and increasing prices year on year. My 16-35IIL cost me £850 new, it's still worth close to that S/H and new they are nearly £1200. My 85 f1.2 II L cost me £1200, it's worth nearly that S/H and it's new price is between £1500 and £1800 depending where you buy it.

Camera bodies are electronic devices like your iPad, iPhone, iMac and depreciate accordingly as their function degrades.

I sometimes wonder if the people that care most about the resale value are those that are always running with a month to month non-$0 debt on their credit card and thus see the resale value as being a way to gain back that lost debt, so to speak.
Hi,
    Some of us (me included) always sell the old camera to fund the new camera, so that we don't need to pay the full price for it when we upgrade our camera. In the idea scenario, when a new model come out, we should have save enough $$ to pay for the difference after we sell the old model.

    If the new camera "refresh" too fast, we might not save enough $$ to perform the "sell old, buy new" upgrade especially for a mid range full frame DSLR like D800 which is not cheap, so we wait... By the time, we ready to perform the upgrade, a new model launched (may be D900) and the value of our old camera drop even further...

    Hmm... may be this is the reason why Nikon don't sell as many camera as Canon as their model "refresh" too fast which make the resale value of their camera drop so fast that it's make no sense to perform upgrade, so Nikon user will just use the camera longer until they save enough $$ to buy a new one at full price.

    Have a nice day.

You upgrade your camera when there is a significant functionality boost over the old camera, not because of minor changes. A three year old camera is a three year old camera, the loss of value over that time will reflect that. As with any product, there is  premium to be paid for something that is new out of the box rather than used, and resale will lose you that premium. If you upgrade every 12 months for some minor improvement, then yes, you are going to be losing a lot more money than if you upgraded every three years because you are giving up that premium three times instead of once. It is not Nikon's fault that you choose to do this.
       Yes, a 3 year old camera is a 3 year old camera, but as long as your camera is the still current model, your resale value will not drop as quickly as a model that has a replacement model on the market...  When a new model is launch, the price of the older model will drop even if the different between the new model and the old model is just the colour of the camera... A model with a replacement model in the market will sound older than it really is.

      Have a nice day.

87
Lenses / Re: The sharpness curse!
« on: June 26, 2014, 11:37:22 AM »
Hi,
    Everyone got their personal preference... some like extreme sharp lens, some like lens which might not be the sharpest lens, but produce an unique look, some like lens that produce smooth bokeh, some might like the pentagon bokeh certain lens produce, some also like the donut bokeh mirror lens produce (must be quite an interesting image if use a mirror lens to shoot a donut... all the bokeh are also in donut shape... ha ha ha), some even like the result of lens that produce all sorts of aberration on the image... there is no right or wrong answer in photography and IMHO, it's this type of diversity which produce those interesting images... just imagine if every images we saw is extreme sharp, clear and all give the same look, then it's must be very boring after a while...

    Have a nice day.

88
Third Party Manufacturers / Re: D810!!!
« on: June 26, 2014, 08:14:31 AM »
I feel sorry for Nikon owners.
It doesn't matter what model they buy, even when first released, as a few months down the track, Nikon will bring out a new and improved version of it making your current model obsolete and now worth substantially less than it cost you. Remember the D600 then the 610?
Canon does hang onto models much longer, and hence they have better re-sale value later on as say, after 3 years, your Canon may be just superseded, but if you had an equivalent Nikon, it would be 3 models old and practically worthless.

I'm not saying that Nikon cameras are no good, in fact, they are very good indeed, but constant model updates is not how you keep up the perceived and resale value of products.
It also makes it more difficult regarding spare parts too, as many models mean lots of parts and distributors only have so much space and money for parts.

I feel sorry for people who buy cameras based on how much they can sell them for.

If your camera is in good enough condition to be sold as "mint" or "near mint" condition then you obviously haven't used it very much.

While I can understand this for lenses....for camera bodies, they are a depreciating asset. Every camera body I have bought has dropped in resale value over the three years I have owned them. The lenses i have bought have generally been worth more over time due to inflation and increasing prices year on year. My 16-35IIL cost me £850 new, it's still worth close to that S/H and new they are nearly £1200. My 85 f1.2 II L cost me £1200, it's worth nearly that S/H and it's new price is between £1500 and £1800 depending where you buy it.

Camera bodies are electronic devices like your iPad, iPhone, iMac and depreciate accordingly as their function degrades.

I sometimes wonder if the people that care most about the resale value are those that are always running with a month to month non-$0 debt on their credit card and thus see the resale value as being a way to gain back that lost debt, so to speak.
Hi,
    Some of us (me included) always sell the old camera to fund the new camera, so that we don't need to pay the full price for it when we upgrade our camera. In the idea scenario, when a new model come out, we should have save enough $$ to pay for the difference after we sell the old model.

    If the new camera "refresh" too fast, we might not save enough $$ to perform the "sell old, buy new" upgrade especially for a mid range full frame DSLR like D800 which is not cheap, so we wait... By the time, we ready to perform the upgrade, a new model launched (may be D900) and the value of our old camera drop even further...

    Hmm... may be this is the reason why Nikon don't sell as many camera as Canon as their model "refresh" too fast which make the resale value of their camera drop so fast that it's make no sense to perform upgrade, so Nikon user will just use the camera longer until they save enough $$ to buy a new one at full price.

    Have a nice day.

89
Lenses / Re: The sharpness curse!
« on: June 24, 2014, 01:55:32 AM »
Hi,
   I saw someone using the new Sigma 50mm Art lens on his 5DIII and I look at a few images from his 5DIII LCD screen is very sharp, but I think it's may be a bit too sharp for my liking... for example, the edge of the catch light on the eye is too well define... IMHO, look a bit not natural.

   Have a nice day.


90
Hi,
Here comes the lens cap story
   When you shoot with lens cap on, current Canon DSLR will produce an image with mean value of 2048. Nikon DSLR will give a mean value of 0, so the "black" of current Canon DSLR start from 2048 and Nikon DSLR start from 0.

   Have a nice day.

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