After a lapse of 8 years, Canon’s 70-20mm f/2.8L IS finally ushered in another update. The 3rd generation EF 70-200mm f/2.8L IS enables a new coating style and is further optimized for optical performance. As the most signature lens product of Canon, the new 70-200mm f/2.8L IS III USM continues its professional flagship positioning.
Lens focal length: 70-200mm
Lens structure: 19 sets of 23 pieces (including 1 piece of fluorite lens, 5 pieces of UD lens, ASC coating technology)
Aperture range: f/2.8 – f/32
Recent focusing distance: 1.2m
Maximum magnification: 0.21x
Filter size: 77mm
Lens size: about Φ88.8×199mm
Lens weight: 1480g
The biggest change in the optical design of the camera is the introduction of a new ASC coating that further enhances the lens’s anti-glare capability. Based on the original good image, the improvement of the new generation lens mainly allows the new lens to maintain better stability under different shooting conditions, and reduce the influence of glare and other factors.
Appearance & Control
First look at the appearance, the biggest change in the new generation of Canon EF 70-200mm f/2.8L IS III USM is the color of the body of the mirror. The white color of the new lens is cooler, and it is significantly different from the previous two-generation products. Therefore, the two-generation lens can be well distinguished from the color alone.
In terms of handling, the control interface of the new generation EF 70-200mm f/2.8L IS III USM lens is exactly the same as that of the previous generation. From the focus to the anti-shake function selection, users familiar with the previous generation can easily get started with this new generation of 3 lenses. To complete the operation and shooting.
As far as I am concerned, I don’t use this lens a lot. My dad prefers to use this lens.
Today I am going to talk about an antique-grade camera, which can be said to be antique, for me, because it is my first SLR camera.
The 40D uses 10.1 effective megapixels, APS-C CMOS, and uses Canon’s latest DIGIC III digital image engine. The nine cross-shaped focus points and a continuous shooting speed of 6.5 frames per second give the 40D a greater potential for high-speed response than its predecessor. In addition, the EOS integrated dust removal system was introduced and there were some changes in the fuselage design.
The EOS 40D’s top line is quite similar to the EOS 30D, while the EOS 5D has no built-in overhead flash, and the top line is more rounded. Turned to the back of the machine, it is immediately attracted to the EOS 40D’s 3-inch LCD screen, and includes a number of buttons such as MENU, which are moved above or below the screen. Please note that the addition of an “AF-ON” button in the upper right corner of the EOS 40D will enhance the choice of starting AF.
LiveView Instant Preview is the first Olympus to be used on the digital SLR body, allowing users to enjoy the convenience of similar DC composition, and also save the purchase cost of the right angle viewfinder, which is convenient for special angle framing. Press the “SET” button in the center of the shuttle jog dial to turn on the instant preview. At this time, the reflector will rise and the CMOS will be powered on for live view. The LCD can choose to display grid lines for easy composition. However, during the instant preview viewing, the camera will perform automatic metering, but the lens should be manually focused.
In general, the Canon 40d is an old machine that lags behind most SLRs now. I am still using it, but it is not so frequent.
With the continuous development of modern computer information technology and the Internet, more and more personal brands are gradually emerging through the Internet economy.
As the personal brands are being popular in nowadays, Network protection and security of personal brands have become very important. For online security, an account is often used in the form of a password to ensure security. This password is often only set and remembered by the brand account owner.
Although saving your password will help you log in the next time, it carries a lot of risk. Clear history and cookie records on a regular basis. When we log in to the mailbox and some personal homepages, our account and password will be forgotten. This way, hackers can access your information.
Also, we need to care about the Privacy level. We can increase the privacy level of regular browsers according to their individual needs and adjust the privacy level of their favorite computers.
After almost 1 month in this community， I found even I have 11 years experience of the photography， I still can learn so many things from this community members.
I always can see many awesome photos in this community and I will give some comments, and the photographers/ posters are always very friendly will give me answer. Sometimes I do not know how can I take the photos as good as they did it, I will ask how can they do that, and they are very happy to share the ideas. In this community, everyone can say quite friendly and warm-heart, even only been here for 1 month, I learned a lot of things.
Intellectual property is the invisible creation by our mind. It can be invention, design, name, logo and so on. There are so many things like these that you may think they are your intellectual property.
The role of intellectual property in international economic competition is increasing. We need a full understanding of intellectual property
To say Intellectual Property in the legal sense, Intellectual Property requires copyright, patents and trademarks.
Copyright
With material rights, no other person may sell or manufacture the same article without the permission of the obligee. It dose not include rational use.
patent
Own the right to an idea, which can be a business idea, new engine technology, or anything that doesn’t yet exist, and is a new technology to improve an existing approach.
Trademark
The right to own a brand, logo or slogan that no one else can use or make.
Copyleft is a way to protect program copyright. This does not mean giving up copyright; in fact, it is not copyleft. The word “left” in Copyleft has nothing to do with the verb “away” – it’s just the opposite of “right”.
Copyleft is a general method of free programs or other work, and requires all modifications and derivatives of programs (or other work) to be free.
The easiest way to make free software is to put it in the public domain without copyright restrictions. If they are smart enough, they should be allowed to share plans and improvements. But it also allows those who are reluctant to cooperate to turn the project into proprietary software. They can make changes more or less and distribute them as proprietary software. Those who have obtained a revised version of the procedure will not have the freedom granted to them by the original author because the intermediary cancelled it.
Copyleft allows anyone to make any changes to the program, but anyone who wants to distribute the program can get the original code. According to the Copyleft principle, all free software allows users to copy, modify and distribute freely, but the original code must be left to each user so that others can get the modified original code to ensure the distribution and development of free software. People who modify free software can certainly charge for providing modified software for other people’s use, but they can’t hide the original code to protect the original created intellectual property for public use, rather than a person’s profit tool.
How the Permissions system help to protect/open IP For my understand of this part, how can the permissions system help to protect IP is not an easy thing to explain. When we created an object in the second life, this means we are already to be the creator and the owner of this object. We can make permissions in our blog post about it. Such as not allow anyone to copy, modify or change it, not allow anyone do any illegally shared or sell without permission with it.
Creative Commons The user can clearly know the owner’s rights, and it is not easy to infringe the copyright of the other party, and the work can be effectively spread.
Four core rights
Attribution (BY): The original author must be mentioned.
Noncommercial, (NC): Not for profitable purposes.
No Derivative Works, (ND): The original work may not be modified and may not be recreated.
Share Alike, (SA): Allows modification of the original work, but must be published using the same license.
The design of the M.Zuiko Digital ED 45mm f/1.2 PRO is designed to specifically direct light through the outer edge of the lens to form an image in the foreground while at the same time moving the spherical aberration towards the outer edge of the lens. Gradually tilt the lens to form a feather-like softening effect.
The use of a large number of special lenses creates high resolution performance The three combined ED lenses can effectively correct the color overflow (axial color difference) and the image edge color overflow phenomenon of the extra-focus portion common to the large aperture lens by optimizing the installation position. In addition, the aspherical lens near the aperture and the four HR lenses can effectively suppress the appearance of coma aberration. For a medium telephoto lens, optimizing the position of the lens, successfully created a feather-like feminine blur effect and accurate high-sharp imaging performance under the maximum aperture setting.
Olympus has created a lightweight focusing unit. The mechanism consists of a screw drive mechanism as the core drive system and a stepper motor as the drive motor for fast autofocus. M.ZD 45mm F1.2PRO has excellent close-range shooting performance of the PRO series, and its closest focusing distance and shooting magnification are 50cm and 0.1x respectively (35mm equivalent: 0.2 times). The ability to take close-ups alone is extremely good for “85mm”.
The M.ZD 45mm F1.2PRO has few side buttons and only one L-Fn (custom function) button. Users can customize it through the body, such as AF stop (default), AE-L/AF-L, preview, custom white balance, AF area selection, MF, RAW switching, test images and other functions. Once the customization is successful, simply press the button to activate or deactivate the target function.
Obviously for Olympus, the high-end models of the OMD series have become the focus of the camera department’s profit, and in order to attract high-end users, the F1.2 large aperture lens group is also a successful thing. Now 17mm, 25mm, 45mm have been released, can meet the high-end user humanities, portraits. For Olympus, the “F1.2 Legion” will either develop to the wide angle or develop towards the telephoto. I thinks that Olympus has a wide angle of M.ZD 12mm F2.0 and Panasonic LEICA DG SUMMILUX 12mm f/1.4 ASPH. The size of the front should be lower than the first one. It is likely that M.ZD 12mm F1.2 Pro will appear in the future.
First, I am going to talk about the Evaluation of the Community.
What is community?
Community is a group of like-minded people who discuss what they like and share their own lives and good things.
Why do we create communities?
In order to be able to learn new things, improve your vision, and share ideas with like-minded people. If you have a problem, you can help each other. In the community, we can share our own ideas and own experiences. We also can help each other to do somethings in the same community as we have same lifestyle our same hobby.
What characterises a community? (e.g. good things, bad things…)
Good thing: You can ask for help and get happiness in the community.
Bad things: Excessive indulging in community activities can be devastating or overly stimulating.
What are some examples of our local communities?
New Zealand Chinese Association Nelson Branch NMIT
Why did you join?
I am a Chinese student studying in NMIT， also I am enjoy the life to living in the Nelson.
How long have you been part of it?
1 and half years.
How active are you?
I will often participate in activities related to China, and major festivals will also be held together.
What online (not Second Life) communities do you belong to?
Because I am photographer, I joined a photographer group in NZ.
Community Name: New Zealand Photography Group.
Why did you join?
I join this community because I want to learn more experiences from others.
Also I can share my own works and experiences on it. As we know photographer always improve ourselves by find the problem from others feedbacks.
How long have you been part of it?
1 month
How active are you?
I usually just comment on my own point of view. May be I will share some photos on it in the future.
What differences are there between physical and online communities? Online community：More communicative Fast transfer of information Anonymous Privacy More convenient
Physical community：Face-to-face communication Only local friends can attend Organize gathering Not anonymous
As all of my friends know that I have 11 years of photography experience. My camera is like my loved one, my brother, I don’t like to sell it or never use it for a second time because I bought a new one, so I have several cameras but often use them in turn. Even I have many different camera brands’ cameras, I have to say that my favorite one is Olympus OM-D E-M1 Mark II.
This is my favorite camera, It accompanied me through my university time in China.
This retro-style E-M1 is designed with aluminum-magnesium alloy. Almost the entire body is covered with function keys and turntables. Even the front of the fuselage has preset function keys, depth-of-field preview keys and flash sync jacks. The user completes the shooting settings faster. The top shutter button has a turntable 丶 movie recording button 丶 color creation function button 丶 zoom out dial 丶 mode dial 丶 preset function button 丶 HDR / film mode button 丶 focus / metering mode button and switch button, more special It is the mode dial that adds a lock button for unlocking, and does not need to rotate one side to change the mode setting. AEL / AFL keys and controls are added to the back of the machine. Other buttons include Info 丶 arrow keys 丶 menu button 丶 play button 丶 delete button and display button. Of course, there are 2.36 million electronic viewfinders and 3 1.04 million Point flip touch screen.
In order to take care of the user’s long-term camera, the back of the machine and the position of the handle are also rubberized, and the handle of the E-M1 is also thickened to increase the comfort of the hand, mimicking the hand of the SLR, but also the overall shape. Become a mix of vintage and modern, I hope that Olympus can design a better looking model in the future! In terms of interface, E-M1 uses Olympus high-order non-reverse operation, and it is very convenient to set on the shooting interface.
E-M1 is designed with aluminum-magnesium alloy body to achieve dust-proof, waterproof and cold-resistant function. With comfortable handlebars, the solid feel is the same as that of ordinary SLR. The lightweight body is more suitable for long-term use. For photography, it is the time-contested user, the E-M1 button turntables definitely help them speed up the operation. However, for users who are accustomed to one-handed operation settings, the reconfigured button positions take some time to adapt. It is worth mentioning that the rearranged turntable position makes the shooting smoother, the tightness is moderate, it is not too easy to push, and it is not too difficult to rotate. In addition, if the fuselage is used with some long lenses, there will still be a feeling of heavy head and tail, which makes the balance feel a little worse.
Wi-Fi function Although we know that the E-M1 is faster when it starts Wi-Fi, we still appreciate the Wi-Fi control and transmission that Olympus has added to it. First, the camera will display the QR Code on the Wi-Fi startup screen. After the phone scans, enter the password to connect the camera. Next, download the Olympus Image Share program from the Apple Store or Play Store. After launching the program, you will find it provides four functions: Control, Transfer, Photo Editing and Adding Photographs. We can use the following interface to control the camera to shoot in P / A / S / M or iAuto mode, in addition to the shutter 丶 aperture 丶 exposure value 丶 sensitivity 丶 white balance 丶 continuous shooting and touch focus settings, etc. The number of photos stored in the memory card and the focus mode will be displayed!
Thanks for 5 years of companionship, my love, Olympus OM-D E-M1 Mark II.
Jonny's Photography Blog 