Hỏi đáp, Tư vấn Kỹ thuật về Máy ảnh và các thiết bị về ảnh.

Có lẽ vì em chọn Canon ngay từ đầu. Nhưng quả thật Canon có những ưu điểm của nó so với Nikon, ví dụ như USM và IS. Còn Nikon F5 thì cũng ngang với Canon 1v thôi.
Các bác có thể tham khảo bài viết dưới đây phân tích về Nikon và Canon (rất tiếc là không có thời gian dịch ra tiếng Việt)
+++++++++++++
Which is better? Canon or Nikon or Minolta or Pentax, etc?
This is a religious question, and most people have strong feelings about it that mainly depend on whichever system they?Tve bought into already. However, it?Ts complicated by the fact that there are definitely strengths and weaknesses of each system.
Note that I say system here - I believe it?Ts far more important to consider all the elements of a given camera system (lenses, flash units, etc) than a specific camera model. You often see posts online from people agonizing over whether they should buy the Canon Elan 7 or the Nikon F80 or the Minolta Maxxum 5 or whatever, but I think they?Tre missing the point. Unless you really really love a specific camera model for some reason, or just want to buy a single camera and lens, it?Ts wiser to consider the features available to you in the whole system.
So I think the question only becomes meaningful when you ask, ?owhich manufacturer makes a system which best suits my particular photographic needs??
Now since this is meant to be a beginner FAQ for users of Canon EOS cameras I?Tm not going to get into a long discussion about the merits of drawbacks of each manufacturer. But I will mention a few points to consider.
? Do you want to be able to use both manual-focus and autofocus lenses on the same camera? If so, many modern Nikon cameras (though not their cheaper models) fit the bill. Canon?Ts old manual-focus system (eg: the FD-mount series of cameras) is not compatible with its autofocus system (the EOS series of cameras).
? Do you want to buy affordable fast and quiet lenses with ultrasonic motors or image stabilization? If so, Canon is your better choice. Nikon sell lenses containing such technology but only really expensive ones.
? Do you have specialized requirements such as the need for interchangeable finders or fully compatible macro bellows or high-capacity film backs? If so, Nikon is probably a better choice.
? Do you want a really lightweight camera? Canon?Ts low-end SLR gear is some of the lightest around.
? Do you have a good friend or relative with lots of camera equipment? If so, and they?Tre willing to lend you it from time to time, you should probably get the same system that they use. They can also be a valuable resource when you have questions and problems.
? Do you want to start out with cheaper products and slowly build up the system with time? If so, Canon?Ts a good choice since they sell cheap, midrange and expensive gear that?Ts all compatible.
Luu Nguyen

Có lẽ vì em chọn Canon ngay từ đầu. Nhưng quả thật Canon có những ưu điểm của nó so với Nikon, ví dụ như USM và IS. Còn Nikon F5 thì cũng ngang với Canon 1v thôi.
Các bác có thể tham khảo bài viết dưới đây phân tích về Nikon và Canon (rất tiếc là không có thời gian dịch ra tiếng Việt)
+++++++++++++
Which is better? Canon or Nikon or Minolta or Pentax, etc?
This is a religious question, and most people have strong feelings about it that mainly depend on whichever system they?Tve bought into already. However, it?Ts complicated by the fact that there are definitely strengths and weaknesses of each system.
Note that I say system here - I believe it?Ts far more important to consider all the elements of a given camera system (lenses, flash units, etc) than a specific camera model. You often see posts online from people agonizing over whether they should buy the Canon Elan 7 or the Nikon F80 or the Minolta Maxxum 5 or whatever, but I think they?Tre missing the point. Unless you really really love a specific camera model for some reason, or just want to buy a single camera and lens, it?Ts wiser to consider the features available to you in the whole system.
So I think the question only becomes meaningful when you ask, ?owhich manufacturer makes a system which best suits my particular photographic needs??
Now since this is meant to be a beginner FAQ for users of Canon EOS cameras I?Tm not going to get into a long discussion about the merits of drawbacks of each manufacturer. But I will mention a few points to consider.
? Do you want to be able to use both manual-focus and autofocus lenses on the same camera? If so, many modern Nikon cameras (though not their cheaper models) fit the bill. Canon?Ts old manual-focus system (eg: the FD-mount series of cameras) is not compatible with its autofocus system (the EOS series of cameras).
? Do you want to buy affordable fast and quiet lenses with ultrasonic motors or image stabilization? If so, Canon is your better choice. Nikon sell lenses containing such technology but only really expensive ones.
? Do you have specialized requirements such as the need for interchangeable finders or fully compatible macro bellows or high-capacity film backs? If so, Nikon is probably a better choice.
? Do you want a really lightweight camera? Canon?Ts low-end SLR gear is some of the lightest around.
? Do you have a good friend or relative with lots of camera equipment? If so, and they?Tre willing to lend you it from time to time, you should probably get the same system that they use. They can also be a valuable resource when you have questions and problems.
? Do you want to start out with cheaper products and slowly build up the system with time? If so, Canon?Ts a good choice since they sell cheap, midrange and expensive gear that?Ts all compatible.
Luu Nguyen

Và cả đây nữa:
Canon and new technology.
Canon take a very different approach to new technologies. On the whole they include their new technology first in their midrange gear.
As they refine the tech they introduce bulletproof implementations in their high-end gear, and as they simplify the manufacturing process they then include it in their low-end gear. There are exceptions to this, of course. The new diffractive (DO) lenses are insanely expensive, for example. But on the whole this is the pattern they follow.
What does this mean for me? Well, it means that I can afford a lens with a fast and silent ultrasonic motor, for example. Canon?Ts ECF (eye control) cameras and IS (image stabilization) lenses are similarly relatively affordable. As I?Tm neither a professional photographer nor a highly wealthy amateur with money to burn, affordability is crucial to me.
Another factor comes into play. Both Canon and Nikon build expensive pro cameras, midrange cameras for advanced amateurs and consumer cameras. Canon differ in that they also sell really cheap mass-market cameras that use the same lens system as all of their other gear. This means they can spread development costs over a much larger product base.
It also means you can easily pick up dirt cheap low-end bodies to pack around for fun or as inexpensive backups and maintain compatibility with your higher-end gear. Or it means you can start out with a super-cheap inexpensive camera and build a system from there. The financial bars to entry are much lower.
Finally, Canon is a much larger and more diverse company than Nikon. This means that they can justify the research costs of a new technology by incorporating it into products across their product lineup. Image stabilization, for example, is built into their SLR cameras, binoculars and camcorders. This is probably the reason why Canon have been the first to introduce a number of significant new camera technologies over the past 15 years or so.
Benefits of Canon EOS.
So those are some of the decisions that made me choose Canon. And I?Tm generally very pleased. Here are the main benefits as far as I?Tm concerned.
Affordable yet useful cameras.
Canon include a lot of features in all their products. Even their low end Rebel 2000/EOS 300 camera has depth of field preview, multiple focussing points and 35 metering zones, for example. Mirror prefire lockup is standard on the midrange gear, as are IR remotes. Ultrasonic lenses are available at every price point on the scale.
Excellent user interface.
I really like the ergonomics of Canon?Ts modern (post EOS 600 series) user interface. Functions are usually sensibly arranged and well thought out. Cameras feel comfortable to hold - nice handgrips and rounded designs. The rear command dial on midrange and higher cameras is a fabulous feature - being able to adjust shutter speed and aperture with the same hand that?Ts holding the camera is brilliant. (at least, it is from the point of a view of a right-handed person - this feature is probably pretty bad if you?Tre lefthanded)
Fully electronic lenses.
Canon abandoned their old mechanical manual-focus FD lens mount when they introduced EOS, which is unfortunate. I do envy Nikon users with their access to manual-focus lenses. But even then it?Ts not that simple. Low-end Nikons, for example, aren?Tt compatible with manual focus lenses. There are all kinds of exceptions. But any Canon EF lens will work with any EOS camera. Autofocus is rapid, thanks to the positioning of the motors inside the lenses and not the bodies. Ring ultrasonic lenses give you silent operation and full-time manual override. All EOS lenses have electronic aperture control, so you can adjust the aperture without having to reach down to the lens barrel with one hand.
Huge range of lenses.
Not as big a range as Nikon?Ts if you include manual-focus lenses. But Canon make the biggest range of autofocus lenses. If you need a lens it?Ts out there. And if you can?Tt buy it there?Ts a reasonable chance you can rent it. Canon do make a lot of mediocre lenses in terms of optical quality - all their bottom-end stuff. But at least those cheapies allow beginners a first step into the field. And later if you want to buy an L series lens which competes with the best any other 35mm manufacturer makes, you can do so.
Disadvantages.
Are there disadvantages with Canon? Of course - every system has its compromises. I do regret not being able to pick up inexpensive manual-focus lenses the way Nikon users can. It?Ts frustrating to me that most cameras in the EOS lineup fog high-speed infrared film. That only high-end Canons have true spot metering. That Canon viewfinders are really lousy if you wear glasses. That EOS cameras are clearly not built for longevity and have to be thought of as devices with maybe a 15-20 year lifespan - look at the disintegrating shutter bumpers in EOS 600 series and Elan/100 cameras. That Canon do seem to put more emphasis on flashy technology (eg: ECF) rather than getting the basics right (eg: AE metering and flash metering, particularly on the digital EOS cameras).
Nikon cameras are also arguably superior when it comes to macro photography, and many people claim that Nikon still have the edge over Canon in the area of flash photography, even with E-TTL. Nikon are also more modular in some regards - their high-end cameras have interchangeable finders, for example.
And so on. But on the whole, I?Tm quite satisfied with my decision.
Conclusion.
So there you go. Those are the factors which shaped my decision. I?Tm not, however, saying anything stupid like Canon make the best gear out there. Of course they don?Tt - because there?Ts no such thing. Each system has its pros and cons, and what?Ts best for one user isn?Tt necessarily the best for another.
And yes, I do focus somewhat on questions of technology. Obviously - the point of this document is moving from older manual-focus equipment to autofocus. If I wanted to stay with manual gear, I would have. Autofocus isn?Tt superior for everything, but it was a switch I was ready to make. Having all my manual-focus gear stolen in one proverbial fell swoop did, I admit, make it a little easier.
If you?Tre looking for a camera, ignore the diehard fans, as they?Tre usually totally blind to the faults and disadvantages of a given camera system. Spend some time with the gear before buying, if you can. Rent a camera and a lens or two and see if they work for you. Make a quick list of the type of photography you want to do and see which system is likely to fit your needs. Find out what your friends and relations use - you might be able to borrow lenses you need on occasion if they have compatible gear to yours. And have fun
Chúc vui vẻ,
Luu Nguyen

Và cả đây nữa:
Canon and new technology.
Canon take a very different approach to new technologies. On the whole they include their new technology first in their midrange gear.
As they refine the tech they introduce bulletproof implementations in their high-end gear, and as they simplify the manufacturing process they then include it in their low-end gear. There are exceptions to this, of course. The new diffractive (DO) lenses are insanely expensive, for example. But on the whole this is the pattern they follow.
What does this mean for me? Well, it means that I can afford a lens with a fast and silent ultrasonic motor, for example. Canon?Ts ECF (eye control) cameras and IS (image stabilization) lenses are similarly relatively affordable. As I?Tm neither a professional photographer nor a highly wealthy amateur with money to burn, affordability is crucial to me.
Another factor comes into play. Both Canon and Nikon build expensive pro cameras, midrange cameras for advanced amateurs and consumer cameras. Canon differ in that they also sell really cheap mass-market cameras that use the same lens system as all of their other gear. This means they can spread development costs over a much larger product base.
It also means you can easily pick up dirt cheap low-end bodies to pack around for fun or as inexpensive backups and maintain compatibility with your higher-end gear. Or it means you can start out with a super-cheap inexpensive camera and build a system from there. The financial bars to entry are much lower.
Finally, Canon is a much larger and more diverse company than Nikon. This means that they can justify the research costs of a new technology by incorporating it into products across their product lineup. Image stabilization, for example, is built into their SLR cameras, binoculars and camcorders. This is probably the reason why Canon have been the first to introduce a number of significant new camera technologies over the past 15 years or so.
Benefits of Canon EOS.
So those are some of the decisions that made me choose Canon. And I?Tm generally very pleased. Here are the main benefits as far as I?Tm concerned.
Affordable yet useful cameras.
Canon include a lot of features in all their products. Even their low end Rebel 2000/EOS 300 camera has depth of field preview, multiple focussing points and 35 metering zones, for example. Mirror prefire lockup is standard on the midrange gear, as are IR remotes. Ultrasonic lenses are available at every price point on the scale.
Excellent user interface.
I really like the ergonomics of Canon?Ts modern (post EOS 600 series) user interface. Functions are usually sensibly arranged and well thought out. Cameras feel comfortable to hold - nice handgrips and rounded designs. The rear command dial on midrange and higher cameras is a fabulous feature - being able to adjust shutter speed and aperture with the same hand that?Ts holding the camera is brilliant. (at least, it is from the point of a view of a right-handed person - this feature is probably pretty bad if you?Tre lefthanded)
Fully electronic lenses.
Canon abandoned their old mechanical manual-focus FD lens mount when they introduced EOS, which is unfortunate. I do envy Nikon users with their access to manual-focus lenses. But even then it?Ts not that simple. Low-end Nikons, for example, aren?Tt compatible with manual focus lenses. There are all kinds of exceptions. But any Canon EF lens will work with any EOS camera. Autofocus is rapid, thanks to the positioning of the motors inside the lenses and not the bodies. Ring ultrasonic lenses give you silent operation and full-time manual override. All EOS lenses have electronic aperture control, so you can adjust the aperture without having to reach down to the lens barrel with one hand.
Huge range of lenses.
Not as big a range as Nikon?Ts if you include manual-focus lenses. But Canon make the biggest range of autofocus lenses. If you need a lens it?Ts out there. And if you can?Tt buy it there?Ts a reasonable chance you can rent it. Canon do make a lot of mediocre lenses in terms of optical quality - all their bottom-end stuff. But at least those cheapies allow beginners a first step into the field. And later if you want to buy an L series lens which competes with the best any other 35mm manufacturer makes, you can do so.
Disadvantages.
Are there disadvantages with Canon? Of course - every system has its compromises. I do regret not being able to pick up inexpensive manual-focus lenses the way Nikon users can. It?Ts frustrating to me that most cameras in the EOS lineup fog high-speed infrared film. That only high-end Canons have true spot metering. That Canon viewfinders are really lousy if you wear glasses. That EOS cameras are clearly not built for longevity and have to be thought of as devices with maybe a 15-20 year lifespan - look at the disintegrating shutter bumpers in EOS 600 series and Elan/100 cameras. That Canon do seem to put more emphasis on flashy technology (eg: ECF) rather than getting the basics right (eg: AE metering and flash metering, particularly on the digital EOS cameras).
Nikon cameras are also arguably superior when it comes to macro photography, and many people claim that Nikon still have the edge over Canon in the area of flash photography, even with E-TTL. Nikon are also more modular in some regards - their high-end cameras have interchangeable finders, for example.
And so on. But on the whole, I?Tm quite satisfied with my decision.
Conclusion.
So there you go. Those are the factors which shaped my decision. I?Tm not, however, saying anything stupid like Canon make the best gear out there. Of course they don?Tt - because there?Ts no such thing. Each system has its pros and cons, and what?Ts best for one user isn?Tt necessarily the best for another.
And yes, I do focus somewhat on questions of technology. Obviously - the point of this document is moving from older manual-focus equipment to autofocus. If I wanted to stay with manual gear, I would have. Autofocus isn?Tt superior for everything, but it was a switch I was ready to make. Having all my manual-focus gear stolen in one proverbial fell swoop did, I admit, make it a little easier.
If you?Tre looking for a camera, ignore the diehard fans, as they?Tre usually totally blind to the faults and disadvantages of a given camera system. Spend some time with the gear before buying, if you can. Rent a camera and a lens or two and see if they work for you. Make a quick list of the type of photography you want to do and see which system is likely to fit your needs. Find out what your friends and relations use - you might be able to borrow lenses you need on occasion if they have compatible gear to yours. And have fun
Chúc vui vẻ,
Luu Nguyen

Bác "tầm chương trích cú" nhiều quá, tớ đọc lùng bùng lỗ tai, vốn tính nông dân tớ chỉ "trăm nghe không bằng một thấy", bác cứ upload lên vài cái ảnh là tớ tin ngay. Tớ công nhận là công nghệ số thì Canon đi trước NIkon một bước dài nhưng về dòng máy SLR thì tớ chưa thấy em Canon nào chụp oách cả.
Tin vui cho SGPB: Trong thời gian tới, em sẽ mua thêm máy DSLR để đú đởn với các bác, chắc phải rủ bác Ducnc, Alô đi chụp chỗ nào cheo leo một tí, nếu may ra thì..... mua được 1DMarkII với giá rẻ (hehe)! Nhưng mà dù thế nào cũng không bao giờ bỏ em F90X cả, chỉ upgrade lên F5 thôi!

Bác "tầm chương trích cú" nhiều quá, tớ đọc lùng bùng lỗ tai, vốn tính nông dân tớ chỉ "trăm nghe không bằng một thấy", bác cứ upload lên vài cái ảnh là tớ tin ngay. Tớ công nhận là công nghệ số thì Canon đi trước NIkon một bước dài nhưng về dòng máy SLR thì tớ chưa thấy em Canon nào chụp oách cả.
Tin vui cho SGPB: Trong thời gian tới, em sẽ mua thêm máy DSLR để đú đởn với các bác, chắc phải rủ bác Ducnc, Alô đi chụp chỗ nào cheo leo một tí, nếu may ra thì..... mua được 1DMarkII với giá rẻ (hehe)! Nhưng mà dù thế nào cũng không bao giờ bỏ em F90X cả, chỉ upgrade lên F5 thôi!

Riêng ở Vn số lượng nhiếp ảnh gia sử dụng Nikon là nhiều nhất ! Hihihi

Riêng ở Vn số lượng nhiếp ảnh gia sử dụng Nikon là nhiều nhất ! Hihihi

Thèm body D-Canon , thèm ống kính Nikon , ước gì hai là một nhỉ !

Thèm body D-Canon , thèm ống kính Nikon , ước gì hai là một nhỉ !