tháng 5 2015

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FZ1000 hand held auto panorama stitched in camera. Thanks to the miracle of multi frame stitching software, cameras like the FZ1000 can make superwide photos. This one takes in  about 170 degrees. You can see the result is quite good. The stitching software has somehow figured that there is only one speedboat in the right mid area. The sailboat further to the right has acquired two masts however.  

I think the future  for enthusiast amateur photography lies with fixed zoom lens cameras (FZLC).


I also take the view that if the camera is to differentiate itself  from the smartphone as a worthwhile genre  it should meet myrequirements for a ‘Proper Camera’. 

This briefly means it should have a high quality zoom lens, built in EVF, fully articulated monitor, ergonomic handle and thumb support, full set of controls for the enthusiast user, fully auto mode for the snapshooter, very good picture quality, fast  responsive performance and excellent ergonomics.

It is a camera which enthusiast/expert users be they amateurs or professionals will want to own and use.

I have no interest in any camera without a  built in EVF so I will not consider any such models in this post. This is a personal preference of course, but it is well grounded in experience.

There are two main problems with cameras lacking an EVF.

The first is that the camera is very difficult to hold still with monitor view especially at the long end of a zoom range. The result is blurred pictures.

The second is that even the best monitors are very difficult to see in bright light. I live in Sydney Australia where bright sunlight prevails, making monitor view a frustrating exercise most of the time.  

Preliminary Comment    Let us assume for a moment that I am right about this and the FZLC is really going to be the main camera type for the enthusiast/expert photographer in the near future.

My thinking is that the manufacturer best poised for success would be the one already offering the best selection of  highly capable FZLCs and a history of making good cameras of this type.

Let us see what is available by manufacturer in alphabetical order with my comments at the end of each group. 

Please bear with me if I fail to mention your favourite camera or one about which you wanted to read. I will probably miss a few models and may be unclear about whether a particular model is still available.

Canon     Incredibly Canon appears to have just one FZLC with a built in EVF, the SX60.  I own and have reviewed the SX60 and while it is not a bad camera it is outperformed by offerings from other makers.

Canon is not engaging effectively with the FZLC genre. They continue to churn out basic snapshooter compacts and travel/super zooms without an EVF. 

I guess as long as people buy these half baked cameras Canon (and Nikon) will make them.

But I have to believe Canon’s weak offering will damage their reputation particularly as other makers are offering much better products in this category.

Comment: Either I am completely wrong about the future success of the FZLC or the product development people at Canon have lost the plot altogether.

We shall see. 


Fujifilm  A few years ago Fuji had many models in the FZLC category with updates every year. But recently they appear to have directed most R&D into the X-System of MILCs.

There is the S1, a weather resistant DSLR style 50x superzoom with  the ubiquitous 1/2.3” (7.6mm diagonal) 16 Mpx sensor, presumably the same or very similar to that in many current superzooms. 

Reviews suggest the S1 has more digital noise than similar cameras from other makers.

At a lower price point there are the S9800 and S9900W with a smaller aperture lens and without the weather sealing.

The X30 is basically an X20 advanced compact with EVF in place of the X20’s OVF.  The X-Trans sensor filter array is retained.

Reviews suggest picture quality is not up to the standard set by the Sony RX100 and Panasonic LX100.

Comment:  Fujifilm’s current FZLC offerings appear a bit tokenistic to me.  Like….Yeah we make one of those………….you can buy one if you want but we would rather you come see our X camera range and fabulous lenses……….

Leica  rebadges Panasonic FZLCs. They are the same inside.

Nikon  has the P7800 advanced compact which I bought last year and have reviewed. It has good picture quality and a good lens but tediously slow shot to shot times with RAW capture, a poor EVF and mediocre ergonomics.

The P610 is a DSLR style superzoom with the 7.6mm sensor and a very long, good quality zoom lens and quite good picture quality but no RAW capture.

The P900 which I have reviewed on this blog has been attracting a lot of attention lately, with reason. 
It is basically a P610 with the longest zoom ever offered on a consumer camera spanning focal length equivalent 24-2000mm.

It works well for birds and small animals with better picture quality than most cameras with the small 7.6mm sensor. Like the P610 RAW is not available and overall performance is limited by the Expeed C2 processor.

Comment:   Nikon has the technical capability to score big in the FZLC world. They just need to upgrade the processor in their premium Coolpix line, or launch a new premium FZLC line and  get the performance and ergonomics working properly.

Olympus has the Stylus 1, now in 1S version. This is styled like Olympus  micro 4/3 cameras and carries a 10x zoom lens. The sensor is the 1/1.7” (9.3mm diagonal) type which should give better picture quality than superzooms with the smaller sensor but reviews suggest that expectation might not be met in practice.

With its constant f2.8 lens and comprehensive control layout the Stylus 1 should be a category killer but my reading of reviews would indicate that is not the case.

Comment:  Maybe this camera would be revitalised with a better sensor. The specification is certainly interesting.

FZ1000.  This picture was made hand held from the same position as the panorama above. This time I used i-Zoom for a focal length equivalent of 800mm which is double the maximum optical zoom of the FZ1000. The result is quite acceptable for a small print.


Panasonic  has the largest and most diverse offering of FZLCs with built in EVF, not surprising as they have been making cameras like this for quite a while.

The FZ1000 has been extensively reviewed on this blog. It is the most versatile camera I have ever used and is the main source of my belief in the future of the FZLC genre.

The LX100 is probably the best advanced compact ever made, also extensively reviewed on this blog.

The FZ200 is a DSLR style superzoom which has been on the market for a couple of years with rumors of a replacement due sometime soon.

The TZ70 is the latest iteration of Panasonic’s popular travel zoom genre, also reviewed on this blog.

The FZ70 is similar in style to the FZ200 but with a longer zoom of smaller aperture. I have not reviewed this camera but it has attracted less enthusiasm on user forums than the FZ200.

The LF1 is an advanced compact with the 9.3mm sensor, 7.1x zoom and a built in EVF. Reviews indicate the EVF is not very good. This camera has also attracted little interest on user forums, usually a sign that it does not appeal much to enthusiast photographers.

Comment:  Roll on, Panasonic, keep up the good work.

Ricoh/Pentax  Do they still make cameras ?

Samsung  has the very strange WB2200F which looks like a pro level DSLR with built in vertical grip but uses the standard 7.6mm superzoom sensor.

The WB1100F appears to be the same or similar but without the vertical grip.

Comment:  Like Fujifilm, Samsung seems to think the future lies with APS-C MILCs. Samsung’s  camera energy appears to be invested in the NX1 and lenses right now. I think Samsung and Fujifilm are heading in the wrong direction with both MILCs and the APS-C sensor size.

But, I could be entirely wrong about that. We shall see.

Sony  has been one of the drivers of innovation in the FZLC genre and is  probably the source of sensors for most current models from other brands.

The original RX100 was the first model to fit the 1” (15.9mm diagonal) sensor into a truly pocketable camera capable of good picture quality suitable for publication and substantial enlargement. This camera gained much well deserved praise. It has been followed up by the Mk2 and now Mk3 version which has a built in EVF although it has to be popped up from its hiding place for use.

Sony then put the same sensor into the RX10,  a DSLR style camera with 8.3x constant f2.8 zoom.

There are the HX400 with 63x zoom  and HX400V with 50x zoom, both with a 7.6mm sensor. I know little about these cameras as they lack RAW capability so are not of much interest to me.  They were announced in February 2014 and have not since been updated.

The HX90V is a recently announced compact 30x superzoom which is even smaller than Panasonic’s TZ70. It has a built in EVF but like that on the RX100(3) it must be popped up for use. I have not yet seen reviews of this camera.

I find I need to use great care if I am to hold the TZ70 still enough for sharp pictures at the long end of the zoom range. The HX90V is even smaller with a vestigial handle and will presumably be even more challenging to hold steady. It will need a super effective image stabiliser.

It seems this year Sony is preferencing small size over SLR form in its approach to the FZLC.

Comment:   Sony has the technological capability to do pretty much anything they want. Sony’s problem with cameras has been a lack of direction and purpose revealed as multiple new models and types of camera with no continuity of lineage.

For instance there is no follow up model to the RX10 in sight. Why ?? They have the sensor, they have the capability, they have the target set by the FZ1000, what’s up ??

Verdict  If this was a horse race which it is, kind of, well it’s a race of some sort  and if I was a betting type person which I am not but anyway…………I would put my money on Panasonic.

Come to think of it I do put most of my money on Panasonic so I hope that particular horse comes home a winner.

I rather wish the product development people at Sony would get their act together and settle on a coherent product development strategy with a vision for the future as well as the latest enthusiasm. 
That would put the sensor maker and the camera maker in the same tent which surely must be a good thing.

As usual…..we shall see………….


















LX100 hand held

I have been using and reviewing   several fixed zoom lens cameras over the last few months.
Here are some brief comments about each.

Panasonic FZ1000  was announced in June 2014.   The groundwork for this camera was laid by Sony with the RX10 announced in October 2013.  The FZ1000 uses the same 15.9 mm diagonal Sony sensor as the RX10 but increases the zoom range from 8.3x to 16x and delivers improved performance and ergonomics.

At their introduction the RX10 and FZ1000 (and Sony RX100) had the largest sensor seen on a FZLC with a consequent big jump in picture quality from previous models.

The FZ1000 is the most versatile single piece of photographic equipment I have ever owned.  It can replace an ILC for most non professional photographic purposes and even quite a few professional requirements.

It delivers excellent picture quality at all focal lengths, good performance for still subjects or sport/action with very brisk response to user inputs and very good ergonomics, with 4K video capability.

I quite often read posts on user forums from former users of APS-C DSLRs and M43 ILCs who have, like me, traded in their ILC kit for a FZ1000 and have been very happy with the result in terms of both picture quality and user experience.

The only deficits of the FZ1000 when compared to full frame (43mm) or APS-C (27-28mm) sensor ILCs with several lenses, is a lack of ultrawide and ultra long zoom range and  more noisy picture quality at high ISO sensitivity settings.

Ultrawide photos can readily be made using the inbuilt auto panorama mode or by merging several RAW or JPG frames in Adobe Photoshop.

Respectable shots up to FLE800mm can be had simply by cropping the original RAW capture from 20 Mpx (FLE400mm) to 5 Mpx (FLE800Mpx). 

I found these 5Mpx crops to have better picture quality than one might imagine given all the hype recently about cameras with 50 Mpx.

Somewhat to my surprise, Sony has not yet answered the challenge of the FZ1000 with no update to the RX10 yet announced.

Even more surprising to me is that no other manufacturer has released a competitor for the FZ1000.

Either I am wrong about the FZLC being the future of amateur photography or a lot of product development people are asleep at the corporate wheel.

Here are the five cameras referred to in this post


Panasonic LX100  was announced in September 2014.

This is a major step up from previous cameras in the LX line with a much larger 19.2mm diagonal multi aspect ratio sensor from Panasonic.

The trend to put a large sensor in a compact camera was started by Sony with the RX100 followed by the Mk2 then the current Mk3 versions which use the same sensor as the RX10/FZ1000.

The LX100  is considerably larger than the RX100(3) but still qualifies as a compact. It delivers excellent pictures, good performance and reasonable ergonomics with a fixed (no need to pop up) built in EVF.

I believe  the LX100 is probably the best advanced compact available right now. The RX100(3) comes very close (some say equal to) the LX100 in image quality but its user experience is less engaging. 

I would  find that pop up EVF irritating.

Richard Butler in his review for Digital Photography Review described the LX100 as “one of the best photographer’s cameras on the market”  and   “probably the best zoom compact ever made”.

I am not a fan of the LX100s ‘traditional’ control system but can live with it well enough.  A fully articulated monitor and a Mode Dial based control system would improve the user experience.

The LX100 works very well as a street camera. It is unobtrusive, fast and responsive. It is ideal indoors or outdoors. The camera’s exposure algorithms make good choices for aperture, shutter speed and ISO when set to A on the aperture ring and shutter speed dial with auto ISO.

The LX100 was announced in September 2014.

Again we as yet see no effective response to the LX100 from any other manufacturer.  Maybe Panasonic’s move took them all by surprise or maybe those product development people on the other teams are still asleep at the wheel.

LX100  hand held


Small sensor/Long zoom   or  Big sensor/short zoom ?  It’s a trade off.

The LX100 has a large (for a compact) sensor with a zoom range of just 3.1x.

The FZ1000 has a slightly smaller sensor with a very substantial zoom range of 16x.

The next three cameras have a very much smaller sensor with a diagonal of just 7.66mm and a much longer zoom range.

They work best outdoors in good light particularly at the long end of their zoom range which has a restricted lens aperture of around f6.5.

They are most suitable for still subjects (even if like birds they are only still for a few seconds)  not moving subjects or sport/action.

Canon SX60  was announced in September 2014. It is the latest in a long line of Canon SX superzooms.

I would like to say it is also the greatest but that appears not to be the case.

It has a nice handle, is nice to hold and has a behind-the-shutter-button front control dial just like an EOS DSLR.

Unfortunately picture quality is noisy with RAW capture and exhibits excessive noise reduction in JPGs.

Performance is slow and operation awkward due to the flat, recessed 4 way controller and adjacent buttons.

Canon needs to upgrade every aspect of  the SX60 which is lagging behind its competitors in picture quality, performance and ergonomics.

User forum posts would suggest the SX50 may be a better or at least not less capable camera.

LX100


Nikon P900  The SX60 has  a remarkable 65x zoom lens but the P900 announced in March 2015 trumps that with an amazing 83x zoom going all the way out to focal length equivalent (FLE) 2000 mm.

The P900 is at its best photographing birds and small animals.

It has an excellent lens which is good even at full zoom and a good VR system which  allows handholding at ridiculously slow shutter speeds with the reasonable expectation of a usable result.

Unfortunately RAW capture is not offered and performance is pedestrian.

An alternative to the P900 is the P610 which appears to be basically the same camera with a slightly shorter but still huge zoom range.

Panasonic TZ70 (SZ50)  Unlike the two cameras above, the TZ70 is very light and compact in dimensions.  Into its diminutive frame Panasonic has somehow fitted a 30x zoom of quite good quality.

The TZ70 which was announced in January 2015 is the latest in a long line of  Panasonic travel zooms.  Apparently these sell well and the reason is easy to see.

With good picture quality, good performance and good ergonomics, the TZ70 does just what it sets out to do which is to provide travellers with an all purpose  photographic device in a very compact package.

Of the three small (7.66mm diagonal) sensor cameras described here (SX60, P900, TZ70) I rate the TZ70 as having the most coherent  realisation and the most engaging user experience.

On my testing it also makes the best pictures in the near-wide to mid range of the zoom (RAW).

FZ1000.  I have photographed this scene many times over the years with a variety of cameras and lenses. The Canon EOS 60D with EF 70-200mm f4 L IS did a good job but in my hands the Panasonic GH4 with Lumix 35-100mm f2.8 delivered slightly better detail and the FZ1000 is slightly better again.  I find the FZ1000 gives away nothing  in picture quality to M43 and APS-C ILCs in most conditions and is sometimes better.


What’s next ?

Sony is currently the leading camera sensor manufacturer. On this website   http://www.sony.net/Products/SC-HP/IS/sensor2/products/index.html   there is reference to the IMX204,  a 1/1.7” (about 9.3mm diagonal) 20Mpx Exmor RS sensor, available to other camera makers. 
This appears to be the first RS type sensor offered to the market.

R, (presumably for Reverse) indicates a back illuminated type.

S indicates Stacked, which is a further development designed to improve sensitivity.

The 9.3mm sensor has about 1.5x the area of the common 1/2.3’, 7.6mm type seen in the TZ70, SX60 and P900 referred to above.

The increased area and new architecture should provide a significant improvement in image quality.

I hope this sensor finds its way into a FZLC sometime real soon.








Until recently fixed zoom lens cameras have struggled in low light. This hand held photo was made with a Panasonic LX100. ISO 1600, f1.7, 1/40 second.  


There has been much discussion  recently in blogs and camera forums about the contest for market dominance between Digital Single Lens Reflex (DSLR)  and Mirrorless  (MILC) interchangeable lens camera types.

However this contest  may be sidelined by the rise of two other camera types.

The first of these is of course, the smart phone which has become the favourite picture taking device in the modern world.

Until recently if you wanted better picture quality than a smart phone you had to get a DSLR or MILC.

But there is another camera type which is capable of making very good pictures.

That is the Fixed Lens camera (FLC). Some of these come with a single focal length lens, attractive to a very small buyer group happy to live without a zoom.

But the great majority have a zoom lens (FZLC) which is more appealing to a wide buyer demographic.

Like most FZLCs the Panasonic FZ1000 does not have an ultrawide focal length. But Photoshop comes to the rescue. This panorama was made from a sequence of hand held RAW captures, stitched in Photoshop to produce a RAW panorama file. The stitching software has coped well with potential parallax errors which could have arisen with the juxtaposition of near and far trees.


Sales figures for these cameras are presently unknown as they have been buried in the ‘compact’ category.

This category includes budget compacts, advanced compacts, superzooms and travel zooms of various configurations. Some of these are not compact at all as anyone who has held a Nikon P900 will know. 

Some have been called ‘bridge’ cameras, presumably suggesting they are some kind of intermediate between compacts on the one hand and DSLR/MILCs on the other.  

But cameras like the Sony RX10 and Panasonic FZ1000 are not a bridge from any camera type to any other type. They are a fully fledged, stand alone,  all purpose solution to the majority of photographic requirements for the majority of photographers.

Shipments of cameras in the ‘compact’ category fell precipitously from 2012 to 2014 but appear to have steadied since the beginning of 2014 according to CIPA data of shipments by Japanese camera companies, published in Mirrorless Rumors 01 May 2015.

It is possible that the apparent plateau in ‘compact’ sales since the beginning of 2014 might be due to advanced compacts and superzooms.

I think that the future of cameras for the great majority of amateur users lies in the Fixed Zoom Lens (FZL) category.

The FZ1000 has a maximum optical zoom of FLE400mm which is not great by modern FZLC standards. But a few years ago 400mm was regarded as a superzoom lens. The surf club in the foreground is 1.3 kilometers from the camera, the city buildings in the background are 14 K away.
Plenty of detail in this hand held shot thanks to the very good lens and OIS.


Last year I sold all my interchangeable lens cameras (ILC) in favour of a Panasonic FZ1000 and have never regretted that decision. 

Interchangeable lenses and interchangeable lens cameras (ILC) are the 20th Century’s answer to the problem of providing a range of focal lengths from very wide to very long.

The ILC strategy is successful but the downside is the need to buy, carry and change lenses as subject requirements alter.

This is a simple crop of the photo above this one, from an original RAW capture. This is a 6.3Mpx crop from the original  FZ1000 20 Mpx photo. The original is good enough that the crop is successful and retains quite good picture quality. This crop was chosen to match the maximum optical zoom of the TZ70. When printed with the FZ1000 crop beside the TZ70 full frame, I found the FZ1000 crop shown here to be slightly sharper than the TZ70 version at the same size.
The focal length equivalent is 720mm. 


The 21st Century has seen great advances in the technology of compact, high quality budget priced  zoom lenses and small sensors.

These developments have allowed manufacturers to create cameras with fixed zoom lenses covering almost all the angles of view most photographers will require, together with picture quality good enough for most purposes most of the time.

This allows the photographer to have an entire camera kit in a single device with no need to change lenses, ever. This is less expensive, lighter and more user friendly than a multi lens kit on an ILC.

Until quite recently the main argument against the FZLC has been poor picture quality compared with an ILC, especially in low light when high ISO sensitivity settings are required.

This is still to some extent true particularly for cameras with small sensors but some FZLCs now have sensors as large as the smaller ILCs so the picture quality gap is closing.

The second argument against  FZLCs is that none of them has an ultrawide zoom setting. For many users this will not even register as a problem.

However for those times when an ultrawide view is required a multi frame panorama is a workable solution in many cases.

There are two ways to achieve this.

Many cameras now offer in camera auto panorama stitching, some providing very good results.

An alternative is to make multiple overlapping exposures and merge to panorama in image editing software. The latest version of  Adobe Photoshop (or Lightroom) can do this even with RAW files and output a RAW file for further adjustment.

The third argument against FZLCs is that as a result of the small sensor sizes used in these cameras, focal lengths are short making it difficult to render backgrounds smoothly out of focus.

This characteristic might be a problem if the background is required to be completely out of focus for instance in sport or portraiture but could also be an advantage for documentary work where everything is required to be sharp.

Wide aperture lenses are a partial solution to achieving smoothly out of focus backgrounds.

However there are some situations such as sporting venues which present very busy, intrusive backgrounds which I suspect will always benefit from a full frame sensor.

The Panasonic LX100 which I used for this photo is quite capable of holding follow focus on the action. But the background is intrusive. In fairness to the LX100 I would have to say this background would likely look intrusive with any camera as it is so close to the playing area.
ISO 1600, f2.6, 1/250 sec, AFC, Burst M. I will use 1/500 sec next time as the fast moving players were too often blurred at 1/250 sec.

Next: five FZLCs compared


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1. SEO vệ tinh là gì?

SEO vệ tinh là những site con có nội dung cùng chủ đề hoặc có liên quan tới chủ đề – sản phẩm mà site chính cung cấp. Nhưng site vệ tinh lại tách biệt hoàn toàn với site chính mục đích khi tạo ra các website vệ tinh là để thu hút khách hàng, có thêm khách truy cập và phục vụ một phần cho mục đích làm seo.

Các Site vệ tinh thường nhắm vào một thị trường ngách với một hoặc vài từ khóadài. Nó có thể là các trang Landing Page (Các trang giới thiệu về một sản phẩm hoặc dịch vụ cụ thể) hoặc là các blog chia sẻ kinh nghiệm và thủ thuật về các lĩnh vực liên quan tới site chính.

VD: Tôi có một Website chuyên cung cấp Rượu Vodka Nga thì tôi có thể tạo các site vệ tinh dạng landing page giới thiệu và cung cấp các loại rượu Vodka như:Vodka Akvadiv, Belenkaya, Dovgan, Flagman… hoặc cũng có thể tạo ra các trang blog chia sẻ về kinh nghiệm chọn rượu vodka, thưởng thức rượu vodka nga hoặc văn hóa rượu vodka…

2. Tại sao phải xây dựng hệ thống Site vệ tinh

Có rất nhiều lý do để xây dựng Website vệ tinh nhưng chúng ta có thể liệt kê các mục đích chính khi tạo hệ thống site vệ tinh như sau:

– Giới thiệu các sản phẩm riêng biệt của công ty nhắm vào một đối tượng khách hàng cụ thể.
– Tăng lượng truy cập tới Website chính thông qua site vệ tinh
– Tăng thứ hạng của Website trên các công cụ tìm kiếm bằng cách đặt backlink trỏ về site chính.
– Tạo các kênh bán hàng riêng biệt và tận dụng khách hàng từ các kênh riêng này.

3. Ưu điểm của Website vệ tinh

Website vệ tinh có ưu điểm là dễ xây dựng, không nhất thiết phải cầu kỳ hoặc dành quá nhiều thời gian cho việc xây dựng nội dung. Các bạn chỉ cần duy trì hoạt động của site vệ tinh bằng cách đăng bài theo lịch một tháng từ 5-7 bài.

Chi phí thấp hơn rất nhiều hoặc có thể là miễn phí nếu sử dụng các hệ thống web 2.0 miễn phí như WordPress, Blogger, Tumblr…

4. Nhược điểm của Site vệ tinh

Nếu xây dựng và quản lý không tốt, đặt backlink không hợp lý các bạn rất dễ bị dính Google Sandbox và tất nhiên site chính của bạn sẽ biến mất khỏi công cụ tìm kiếm luôn. Khi đó thì thật là thảm hại.

5. Các mô hình Site vệ tinh nên tham khảo

Có rất nhiều mô hình site vệ tinh nhưng hiện tại chúng ta nên quan tâm tới hai mô hình site vệ tinh sau:

a. Mô hình bánh xe (Link Wheel) trong xây dựng hệ thống Website vệ tinh:

Mô hình Link Wheel là một dạng xây dựng liên kết dạng bánh xe, chúng ta sẽ có một hệ thống các site con được xây dựng nội dung chuyên biệt và có liên kết với nhau theo dạng bánh xe chứ không liên kết chéo. Site chính sẽ ở trung tâm và nhận liên kết từ các site con.

Thông thường mô hình link wheel sẽ được xây dựng trên hệ thống web 2.0 miễn phí như Blogger – WordPress -Quizilla…

b. Mô hình Kim tự tháp (Link Pyramid) trong xây dựng hệ thống Site vệ tinh:

Link Pyramid là chiến thuật xây dựng backlink theo hình kim tự tháp trong đó Site chính sẽ là đỉnh của Kim Tự Tháp, và các site con sẽ phân theo các tầng riêng biệt. Ở hình ví dụ bên trên là mô hình link pyramid 4 tầng:

Tầng 1: Cũng là đỉnh của kim tự tháp là site chính.
Tầng 2: là các site vệ tinh được xây dựng từ hệ thống web 2.0, các website trên host riêng.
Tầng 3: Là các site wiki, các site tự xây dựng
Tầng 4: Là các liên kết đổ về từ các bình luận trên các website khác ngoài hệ thống, từ các Profile…

6. Lưu ý khi xây dựng Site vệ tinh

Trong quá trình xây dựng hệ thống site vệ tinh bạn nên lưu ý các điều sau:
– Không nên đặt liên kết từ site chính ngược về site con
– Không nên đặt liên kết chéo giữa các site con với nhau
– Không nên đặt liên kết dạng Full trang (đặt liên kết ở footer hoặc sidebar).
– Kiểm soát lượng link trỏ về site chính và phân bổ anchor text, banner, hình ảnh hợp lý.

Lưu ý: Khi đặt liên kết chéo giữa các trang các bạn sẽ rất dễ rơi vào mô hình link farm là mô hình liên kết mà các công cụ tìm kiếm gần như coi đó là spam.
Và bạn cũng nên thử những cách riêng của mình để mang lại hiệu quả cao nhất.

Chúc các bạn thành công.

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