HubertChen

HubertChen

Lives in China Guangzhou, China
Works as a CEO
Joined on Jun 29, 2011

Comments

Total: 634, showing: 81 – 100
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On Hands-on with the retro Nikon Df article (230 comments in total)

Very romantic retro design.

Using excellent Nikkor manual focus lenses on such a great sensor with no any focus help (no split screen on the OVF, no live view in the viewfinder with magnification) will soon cause a very frustrating awakening.

The only way to focus will be at arms length same style like with a point and shoot using Live view and magnification.

All my Pentax DSLR can change the split-screen (and I use them successfully). I am surprised this camera can't. On my Pentax it is a cute option. On this camera which is emphasizing the use of manual focus lenses it would be a must.

Direct link | Posted on Nov 5, 2013 at 12:28 UTC as 58th comment | 1 reply
On Sony Alpha A7 / A7R preview (2371 comments in total)
In reply to:

HubertChen: Sony 7 Cameras: Small, powerful and reasonably priced
Sony FE Lenses: Big, slow, expensive

I always use both: Camera + Lens. What is the point of a small camera with big lens? Seems Olympus, Fuji and Pentax have bigger camera bodies. But once lenses mounted to them, they have smaller and lower cost systems with faster lenses.

I am really impressed with the alpha 7 cameras. I applaud Sony. I worry the big, expensive and slow FE lenses will hamper the success.

Dear Rooru S,

If it is a fact that shorter lens mount must produce longer lenses, than I prefer the longer lens mount. I have 5 lenses in my bag and 1 camera. 1 x longer + 5x shorter is less volume and weight than 1 x shorter and 5 x longer!

This aside I do not believe this is an obstacle which can not be overcome. Sony has shown it with the full frame compact camera. Short flange and still diminutive lens.

Also Leica lenses with Lens adapter still seems smaller than what Sony was showing.

Direct link | Posted on Oct 18, 2013 at 14:14 UTC
On Sony Alpha A7 / A7R preview (2371 comments in total)
In reply to:

HubertChen: @ dpreview. I just spend half hour to post one post. Your system insisted my post included a swear word. It did not. I had several people looking over it. My post was considered polite. Still could not post. I have rewritten it many times, still can not post.

--> Please notify me which word you did not liked. Do not keep me trying and failing. This is not a good experience!

Yeah, yeah, I used the P word. Thanks DaveE1 for putting a smile back on my face!

Direct link | Posted on Oct 18, 2013 at 14:09 UTC
On Sony Alpha A7 / A7R preview (2371 comments in total)
In reply to:

HubertChen: Sony cares about shrinking the camera. And they have done an impressive job! But why not care with the same Zeal about shrinking the lenses? Pentax full frame lenses proof that this can be done! And why nobody here cares? What is so exciting about a tiny camera body, if it is almost irrelevant compared to the lens sizes? Or even worse, such a tiny body is not fun to shoot with large lenses. I shot the NEX5 with a 70-200 mm f/2.8 and after only half hour I had a cramp in my right hand. I never had before using a DSLR with the same lens shooting a whole day! I just think tiny camera coupled with big lens makes for bad ergonomics! What am I missing?

@orfeas76

Yes, you can! I shot Sony NEX5 with an adapter and Pentax lenses. Exposure coupling was very usable. AF of course not. Up to 100 mm focal length using manual focus with the magnification in the viewfinder makes for great focus experience. Starting with 200 mm you can not handhold the camera anymore when using magnification for focus assist. Leica does not really make long (M) lenses, so this should be no problem for you. I found focus peaking at f/2.8 paired with medium tele excellent glass is not accurate enough. That's why I used magnification to manual focus.

Good quality lens adapters are available from metabones and novoflex. You want a good quality one in this case using this high resolution and this good lenses, because tiny manufacturing tolerances will show in your image. Michael Reichmann prefers the Sony 7R over the Leica M240 when using Leica glass. I think that says it all: http://www.luminous-landscape.com/reviews/cameras/sony_a7r_hands_on.shtml

Direct link | Posted on Oct 18, 2013 at 14:08 UTC
On Sony Alpha A7 / A7R preview (2371 comments in total)

The FE lens mount is brilliant, and compliments to Sony.

Sony has 3 lens mounts now: Alpha, E and FE. And this camera can use them all. With all automatic couplings. Great backwards compatibility and yet most modern features in one lens mount. Sony needs to be applauded to allow Sony users to reuse their lenses instead of forcing them to re-buy in a different mount. Very commendable.

As for the future it will be very interesting to see how this plays out. Will Sony over time consolidate the lenses to the FE / E mount? E for APSC and FE for FF? And you can mix and match to your hearts content. Use FF lens on APSC Sensor and APSC lens on FF sensor? And whenever you come across legacy alpha glass, you use an adapter.

I am curious to see if this is the end of the DSLR for Sony? Personally, I already do not miss the OVF any more :-)

Direct link | Posted on Oct 18, 2013 at 13:56 UTC as 338th comment | 5 replies
On Sony Alpha A7 / A7R preview (2371 comments in total)

Sony forgot photographer have noses.

This camera has an EVF. Why is it placed in the middle of the camera, where I need to twist my neck and squeeze my nose against the display? Not convenient and will always leave smear on the LCD. If you have a Mirror Box, your OVF has to be here. An EVF is connected with flex PCB. You can place the EVF where you want to. And I want the EVF in a conveient position. Not in an inconvenient one.

Look at cameras from Leica, Zeiss, Voigtlander and Fuji and the viewfinder is in the corner. Very convenient to hold to the eye. No Neck twisting. No nose squeezing. No Display cleaning.

I presume the design is made by the same team that created the NEX menu system? It is a shame to have so great technical prowess and then not utilize the best possible design.

These kind of usability flaw more influence buying decision for pro photographer then IQ. All cameras today have great IQ. But do they lend themselves to great shooting flow?

Direct link | Posted on Oct 18, 2013 at 13:44 UTC as 339th comment | 4 replies
On Sony Alpha A7 / A7R preview (2371 comments in total)
In reply to:

HubertChen: Sony cares about shrinking the camera. And they have done an impressive job! But why not care with the same Zeal about shrinking the lenses? Pentax full frame lenses proof that this can be done! And why nobody here cares? What is so exciting about a tiny camera body, if it is almost irrelevant compared to the lens sizes? Or even worse, such a tiny body is not fun to shoot with large lenses. I shot the NEX5 with a 70-200 mm f/2.8 and after only half hour I had a cramp in my right hand. I never had before using a DSLR with the same lens shooting a whole day! I just think tiny camera coupled with big lens makes for bad ergonomics! What am I missing?

Dear tanmancs,

Sony is offering the camera now for purchase. The cameras have fantastic specs. But the lenses are simply the opposite today: Big size, slow speed, 200% overpriced compared to similar options. This simply need to be considered by anyone thinking about buying these amazing cameras. Why is this so hard to understand: Cameras do not take pictures. Camera + lenses do. It makes no sense to consider the camera alone. You must consider it with lenses. And if I buy a camera today, I must buy the lenses available today. And today this system is not convincing at all, due to the lenses.

Direct link | Posted on Oct 18, 2013 at 13:29 UTC
On Sony Alpha A7 / A7R preview (2371 comments in total)
In reply to:

HubertChen: Sony cares about shrinking the camera. And they have done an impressive job! But why not care with the same Zeal about shrinking the lenses? Pentax full frame lenses proof that this can be done! And why nobody here cares? What is so exciting about a tiny camera body, if it is almost irrelevant compared to the lens sizes? Or even worse, such a tiny body is not fun to shoot with large lenses. I shot the NEX5 with a 70-200 mm f/2.8 and after only half hour I had a cramp in my right hand. I never had before using a DSLR with the same lens shooting a whole day! I just think tiny camera coupled with big lens makes for bad ergonomics! What am I missing?

@ harold1968
The 35mm is also only f/2.8. If f/2.8 is extremely sharp @ 2.8 it is maybe an OK deal. However, I have a 35mm f/2, which I shoot half of the time at f/2 and the other at f2.8 and f/4. You could say that f/2.8 on FF is as good as f/2 on APSC. However, I paid for my 35mm f/2 400 USD, and it is an extremely sharp lens. That Sony lens of same focal distance is a stop slower and double price. So I hope you forgive me if I am not impressed. Please always see my comments in the context, that the Sony alpha 7r is so wow so it is a double stark contrast that the lenses are so meh.

Direct link | Posted on Oct 18, 2013 at 11:54 UTC
On Sony Alpha A7 / A7R preview (2371 comments in total)
In reply to:

HubertChen: Sony cares about shrinking the camera. And they have done an impressive job! But why not care with the same Zeal about shrinking the lenses? Pentax full frame lenses proof that this can be done! And why nobody here cares? What is so exciting about a tiny camera body, if it is almost irrelevant compared to the lens sizes? Or even worse, such a tiny body is not fun to shoot with large lenses. I shot the NEX5 with a 70-200 mm f/2.8 and after only half hour I had a cramp in my right hand. I never had before using a DSLR with the same lens shooting a whole day! I just think tiny camera coupled with big lens makes for bad ergonomics! What am I missing?

@ Rooru S
You say longer lens mount makes smaller lenses and shorter lens mount makes longer one? Well in this case I take the longer lens mount and smaller lenses. I usually carry 5 lenses with me and one camera :-)

Direct link | Posted on Oct 18, 2013 at 11:42 UTC
On Sony Alpha A7 / A7R preview (2371 comments in total)

Sony cares about shrinking the camera. And they have done an impressive job! But why not care with the same Zeal about shrinking the lenses? Pentax full frame lenses proof that this can be done! And why nobody here cares? What is so exciting about a tiny camera body, if it is almost irrelevant compared to the lens sizes? Or even worse, such a tiny body is not fun to shoot with large lenses. I shot the NEX5 with a 70-200 mm f/2.8 and after only half hour I had a cramp in my right hand. I never had before using a DSLR with the same lens shooting a whole day! I just think tiny camera coupled with big lens makes for bad ergonomics! What am I missing?

Direct link | Posted on Oct 18, 2013 at 08:19 UTC as 342nd comment | 15 replies
On Sony Alpha A7 / A7R preview (2371 comments in total)
In reply to:

HubertChen: Sony 7 Cameras: Small, powerful and reasonably priced
Sony FE Lenses: Big, slow, expensive

I always use both: Camera + Lens. What is the point of a small camera with big lens? Seems Olympus, Fuji and Pentax have bigger camera bodies. But once lenses mounted to them, they have smaller and lower cost systems with faster lenses.

I am really impressed with the alpha 7 cameras. I applaud Sony. I worry the big, expensive and slow FE lenses will hamper the success.

Making my comment shorter: Sony cares about shrinking the camera, why not care with the same energy about shrinking the lenses? And why nobody here cares? What is so exciting about a tiny camera body, if it is almost irrelevant compared to the lens sizes? Or even worse, such a tiny body is not fun to shoot with large lenses. I shot the NEX5 with a 70-200 mm f/2.8 and after only half hour I had a cramp in my right hand. I never had before using a DSLR with the same lens shooting a whole day! I just think tiny camera big lens makes for bad ergonomics!

Direct link | Posted on Oct 18, 2013 at 08:17 UTC
On Sony Alpha A7 / A7R preview (2371 comments in total)
In reply to:

HubertChen: Sony 7 Cameras: Small, powerful and reasonably priced
Sony FE Lenses: Big, slow, expensive

I always use both: Camera + Lens. What is the point of a small camera with big lens? Seems Olympus, Fuji and Pentax have bigger camera bodies. But once lenses mounted to them, they have smaller and lower cost systems with faster lenses.

I am really impressed with the alpha 7 cameras. I applaud Sony. I worry the big, expensive and slow FE lenses will hamper the success.

Viewing from Canon EF or Sony alpha: Yes, the new lenses are smaller!

Viewing from Pentax full frame lenses: The new lenses are still bigger than faster glass full frame from Pentax

If you compare it with lens sizes from Sony, Zeiss, Nikon, Sigma, Canon, then you are correct, nothing special about the size of the new EF.

My point was not to compare with what is. My point was to compare with what could be!

Sony really impresses by shrinking the camera. I just find it sad, that they forgot to put the same zeal to the lenses and shrink them too! It can be done:

I shoot sometimes with a Canon 5D and with a Pentax K30. I use similar lenses on both system. In general the Pentax lenses are diminutive to the Canon lenses. The IQ is about the same. The Pentax lenses I have are full frame, they are not APS-C lenses. I am certain, as I also shoot them with my Pentax LX, which is 35mm film. My lenses do have AF, of course only when used on the digital body.

Direct link | Posted on Oct 18, 2013 at 08:12 UTC
On Sony Alpha A7 / A7R preview (2371 comments in total)
In reply to:

HubertChen: @ dpreview. I just spend half hour to post one post. Your system insisted my post included a swear word. It did not. I had several people looking over it. My post was considered polite. Still could not post. I have rewritten it many times, still can not post.

--> Please notify me which word you did not liked. Do not keep me trying and failing. This is not a good experience!

I finally found the offending word:
http://www.pentax forums.com

As soon as you remove the space from the link to that website it does not allow you to post with the reason this is a swear word.

Not true!

Direct link | Posted on Oct 17, 2013 at 13:36 UTC
On Sony Alpha A7 / A7R preview (2371 comments in total)
In reply to:

HubertChen: Sony 7 Cameras: Small, powerful and reasonably priced
Sony FE Lenses: Big, slow, expensive

I always use both: Camera + Lens. What is the point of a small camera with big lens? Seems Olympus, Fuji and Pentax have bigger camera bodies. But once lenses mounted to them, they have smaller and lower cost systems with faster lenses.

I am really impressed with the alpha 7 cameras. I applaud Sony. I worry the big, expensive and slow FE lenses will hamper the success.

I found this one just minutes later. I hope it will make you smile:
http://www.pentax forums.com/news/sony-a7-first-affordable-pentax-full-frame.html
(to use the link you have to remove the space in the domain name)

There are some in the Pentax community waiting for a Full Frame camera for their Full Frame Pentax glass. This Sony with an Adapter fits the bill.

And maybe it works also the other way around. If you want this camera and want small full frame lenses then get an adapter and you can use: Leica M, Pentax K, Voigtlander, or any other Full Frame lens you like (or own). Thanks to Intelligent Auto ISO you will have even good functioning automatic exposure. With the 3 lens mounts listed you can have an mechanical Aperture Ring. I used Sony NEX 5 with Pentax K lenses and usability was fine in terms of lens coupling.

Michael Reichmann looks forward to use the alpha 7R with his Leica M Lenses:
http://www.luminous-landscape.com/reviews/cameras/sony_a7r_hands_on.shtml

Direct link | Posted on Oct 17, 2013 at 13:34 UTC
On Sony Alpha A7 / A7R preview (2371 comments in total)

@ dpreview. I just spend half hour to post one post. Your system insisted my post included a swear word. It did not. I had several people looking over it. My post was considered polite. Still could not post. I have rewritten it many times, still can not post.

--> Please notify me which word you did not liked. Do not keep me trying and failing. This is not a good experience!

Direct link | Posted on Oct 17, 2013 at 13:31 UTC as 371st comment | 4 replies
On Sony Alpha A7 / A7R preview (2371 comments in total)
In reply to:

HubertChen: Sony 7 Cameras: Small, powerful and reasonably priced
Sony FE Lenses: Big, slow, expensive

I always use both: Camera + Lens. What is the point of a small camera with big lens? Seems Olympus, Fuji and Pentax have bigger camera bodies. But once lenses mounted to them, they have smaller and lower cost systems with faster lenses.

I am really impressed with the alpha 7 cameras. I applaud Sony. I worry the big, expensive and slow FE lenses will hamper the success.

@ whtchocla7e

Thanks for your comment. You are correct if you want to compare existing systems. My post was meant not so much as shopping advice but more as inspiration to thinking what if you couple a tiny FF camera with a tiny FF lens?

Sony delivered a tiny camera and monster size lenses. This simply seemed not consistent! And I promise you tiny size full frame lenses are possible. Just have a look at Primes from: Pentax, Voigtlander and Leica M.

Maybe my next post illustrates the point?

Direct link | Posted on Oct 17, 2013 at 13:05 UTC
On Sony Alpha A7 / A7R preview (2371 comments in total)

Sony 7 Cameras: Small, powerful and reasonably priced
Sony FE Lenses: Big, slow, expensive

I always use both: Camera + Lens. What is the point of a small camera with big lens? Seems Olympus, Fuji and Pentax have bigger camera bodies. But once lenses mounted to them, they have smaller and lower cost systems with faster lenses.

I am really impressed with the alpha 7 cameras. I applaud Sony. I worry the big, expensive and slow FE lenses will hamper the success.

Direct link | Posted on Oct 17, 2013 at 12:38 UTC as 372nd comment | 12 replies
On Preview:canon-eos-70d (1311 comments in total)
In reply to:

HubertChen: There is a method to separate imagined quality differences from real quality differences: Double blind test: The test engineer does not know which sample he is showing / playing and the test person does not know. For each sample the judgment of the test person is recorded and later analyzed.

Have a large enough number of test persons, say 10, and you can clearly identify quality features that are recognizable. Say at least 8 out of 10 notice the higher quality.

As for harmonic distortions in audio, trained musicians can detect even minute distortions, regular people can't. So depending on who is the audience, low distortion is important or not.

Once a group of people start discussing relevance on a level where everybody seems to have a different opinion, it actually is becoming time to do double blind tests and see how in real life this quality difference can or cannot be recognized. Who continues talking at this point, loves to talk and actually does not care to find the truth.

My apologies for this post to show. I started writing my above posts based on this one which I posted elsewhere. By the time I was finished the post system had posted the original text. It did not allowed me to delete it, nor did it allowed me to post my final result with the error message something like this: "Your post can not be edit due to time out". If any dpreview admin is reading this, I suggest to change this behavior. I am not OK that a version of my text is published before I press the post button and then what I did not wanted to publish can not be deleted or edited. Such kind of behavior of your system makes me less motivated to use it.

Posted on Oct 13, 2013 at 03:54 UTC
On Preview:canon-eos-70d (1311 comments in total)
In reply to:

HubertChen: dpreview clearly formulated a question to which they wanted to find the answer: How does performance compare of the new AF system (Dual Pixel) versus the old AF system (View Finder PDAF).

I see dpreview to clearly express the test question, then design a series of tests to find the answer to the question. These tests are created in order of relevance and less important tests are left out to leave more time for the important tests. Then perform the tests with precision and analyze the results. Finally to back the findings of the lab with real world shooting.

dpreview earned my respect for doing an important job with integrity and accuracy.

I see many people in the forum to take the test results and formulate new questions, such as was the test procedure tuned to optimized precision of OVF PDAF? This simply is not meaningful.

The tests were not designed to answer these questions and as such the test results can not be used to be interpreted to find answer to these questions.

Yet a lot of discussions do just that. Such discussions are very harmful. They reduce motivation of dpreview to spend a lot of resources on thoroughly testing new technologies about fitness in real photography life.

Such discussions in this intensity also reduce motivation of the serious reader. In order to find meaningful posts, we have to wade through a huge amount of noise.

Make this Win-Win: It is obvious many posters here are interested in optimizing OVF PDAF precision with micro adjustments. Then why not create a forum thread and discuss it there. Keep information focused on topics to increase the Signal to Noise level for everybody.

Posted on Oct 13, 2013 at 03:49 UTC
On Preview:canon-eos-70d (1311 comments in total)

dpreview clearly formulated a question to which they wanted to find the answer: How does performance compare of the new AF system (Dual Pixel) versus the old AF system (View Finder PDAF).

I see dpreview to clearly express the test question, then design a series of tests to find the answer to the question. These tests are created in order of relevance and less important tests are left out to leave more time for the important tests. Then perform the tests with precision and analyze the results. Finally to back the findings of the lab with real world shooting.

dpreview earned my respect for doing an important job with integrity and accuracy.

Posted on Oct 13, 2013 at 03:46 UTC as 64th comment | 1 reply
Total: 634, showing: 81 – 100
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