Đánh giá 5d mark ii

     
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Basic Specifications Full mã sản phẩm name:Resolution:Sensor size:Kit Lens:Viewfinder:Native ISO: Extended ISO: Shutter: Max Aperture:Dimensions:Weight:Availability:Manufacturer:Full specs:
Canon EOS 5D Mark II
21.10 Megapixels
35mm(36.0mm x 24.0mm)
4.40x zoom24-105mm(24-105mm eq.)
Optical / LCD
100 - 6400
50 - 25,600
1/8000 - 30 sec
4.0 (kit lens)
6.0 x 4.5 x 3.0 in.(152 x 114 x 75 mm)
56.0 oz(1,588 g)includes batteries, kit lens
11/2008
Canon
Canon 5D Mark II specifications

21.10MegapixelsCanon EF35mmsize sensor
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5D Mark II Summary

The Canon EOS-5D Mark II raises the standards of the entire EOS line, as it is the first EOS digital SLR camera lớn offer both still and video capture. The Canon 5D Mark II also includes most of the hardware and software upgrades that the company introduced on the Canon 50D.

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Imaging Resource rating

5.0out of 5.0


Canon 5D Mark II Overview

The Canon EOS-5D Mark II raises the standards of the entire EOS line, as it is the first EOS digital SLR camera khổng lồ offer both still and clip capture. The Canon 5D Mark II also includes most of the hardware và software upgrades that the company introduced on the Canon 50D.

Its upgrades are welcome, because though the Canon 5D leads the race for overall image chất lượng for many photographers, it lags behind in a few key areas, most of which improve with the 5D Mark II.


Though no one at quangphucau.com would say that 12.8 megapixels is insufficient, the new 21.1-megapixel sensor will likely be a welcome upgrade, especially lớn professional photographers who already use a 5D. Sony"s latest digital SLR, the A900, raised expectations for high-end digital SLR performance, at least in terms of resolution, và the Canon EOS 5D Mark II indeed outperforms that camera in terms of its noise-to-detail ratio at high ISO.

Canon also takes on the Nikon D3 và D700 with this new high-resolution sensor, as the 5D Mark II also offers an expanded ISO range from 50 lớn 25,600. While the former two cameras achieve 100 lớn 25,600 expanded, they do it at 12.1 megapixels.

Canon has also included the new DIGIC 4 processor, capable of handling the extremely large 14-bit RAW images at the new high tốc độ of 3.9 frames per second.

The new 920,000-dot LCD introduced on the Canon 50D also makes it over khổng lồ the new Canon 5D Mark II, something the new 5D"s competitors also have in their arsenal. The 5D Mark II also shares the Live View features found on the 50D, complete with contrast-detect autofocus và silent shutter modes.

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Many of the other features that debuted on the Canon 50D are included in the 5D Mark II, but one major new feature that probably should have made it into the 50D makes its stand instead in the 5D Mark II: HD đoạn phim capture. That"s right, this high-end digital SLR can capture movies at 1920 x 1080 pixels at 30 frames per second. We"d have expected them to lớn have this in the 50D simply to go up against Nikon"s D90, which can vì chưng 720p video, but that"ll have khổng lồ wait until the next version, perhaps.

The Canon 5D Mark II is quite a camera, one that seems to lớn trump the other two full-frame digital SLR cameras in this price range. Indeed, the fact that its expected body-only pricing will be $2,699, $300 less than the Sony A900 & Nikon D700, makes the 5D Mark II that much more appealing. The Canon EOS-5D Mark II is slated khổng lồ ship at the over of November 2008. Canon will also offer a kit that includes a 24-105mm Canon L lens for a price tag of $3,499. See the User Report below for the full story.


 

Canon 5D Mark IIUser Report

by Shawn Barnett, with Mike Tomkins

Called a Premium digital SLR at its introduction, the original Canon EOS 5D has aged significantly over the last three years. Nevertheless, it"s still regarded by many as the best image-maker on the market in its class, with a remarkably smooth tone curve. Indeed, I said that images from the EOS 5D had an intangible quality that was difficult to quantify. Everything has a more "real" look to lớn it, a truer representation, such that you feel like you could reach out & touch the object or person photographed.

Has Canon maintained that ethereal quality? So much has changed in the market since 2004, it"s a good question. Nikon has thrown down the gauntlet in several areas of image quality, especially in terms of high ISO performance, that it would be understandable if Canon had lớn abandon the surprisingly good tone curve exhibited by the 5D.

Since there is no way lớn measure the unmeasurable, I"ll have to lớn leave it to you whether the Canon 5D Mark II maintains the same màn chơi of magic, but what"s sure is that Canon"s attention to lớn the high ISO issue has produced a camera whose high resolution images stand up lớn substantial enlargement even at the highest settings. The 5D Mark II also gives you plenty of freedom to lớn play confidently with ISO settings, moving with confidence up khổng lồ ISO 800 with nearly no loss of detail and ridiculously low chroma noise, especially considering the 21.1-megapixel sensor size.

The Canon 5D Mark II is aimed at the high kết thúc of the enthusiast market, less so at the "doctor/lawyer" crowd we placed the 5D with. It"s also aimed at the professional photographer looking for a smaller body. Today there are far more photographers willing to lớn pay for a serious digital SLR camera, & the Canon EOS 5D delivers.

The Canon 5D Mark II is also a pleasure lớn use, feeling every bit a premium digital SLR, yet with the ease of a Canon 50D.


Look & feel. The appearance of the Canon EOS 5D Mark II is all business, just like the rest of the cameras in this enthusiast lineup. Controls are almost perfectly placed, and will be familiar to lớn owners of just about any Canon camera in its class dating back khổng lồ the Canon 20D.

The body-only weight of the 5D Mark II is 1.78 pounds (810g), và dimensions are 6 x 4.5 x 3 inches (152 x 113.5 x 75mm). These measurements are essentially identical to the original Canon 5D.

The camera is substantial, but not so bulky that it"s hard to lớn hold for those with medium-sized hands. The heft definitely adds to lớn the 5D Mark II"s stability when shooting, và the big grip has a notch to help guide your hand to lớn the perfect position every time. Those with smaller hands might find the 5D Mark II a bit cumbersome.

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From the front, the 5D Mark II has a slight redesign, with less of a nod to lớn the 1D aesthetic, particularly around the pentaprism housing. Three new elements stand out, though. The first is the new infrared remote control sensor that appears right below the self-timer light (between the grip và the lens mount). This feature has been missing from all of Canon"s high-end digital SLRs until now, confined khổng lồ the Rebel series. So instead of purchasing a rather limiting cable or an expensive remote control unit, you can buy an RC-1 or RC-5 remote control for under $30.

Just beneath the 5D badge are three holes for the Movie mode"s monaural microphone. Below that is the Mark II hình ảnh sản phẩm that clearly distinguishes this mã sản phẩm from the last. I also like the grippy surface on this side of the camera, combined with a flat front, which makes it easier lớn hold the camera with the left when checking images or making settings.


One other thành phầm to consider when looking at the front of the Canon 5D Mark II is that big mirror inside. It"s a full frame camera, equal in kích thước to 35mm film. As great as that is, existing owners of more recent Canon hardware will have to leave their EF-S lenses out of the equation when considering a Canon EOS 5D Mark II as their next camera, because EF-S lenses won"t even mount on the Mark II. Their short back focus design sticks into the camera body toàn thân so much that it would get hit by the large mirror; as such, the camera won"t accept the lenses at all.

Notably missing from the Canon 5D Mark II is a pop-up flash, something we were happy lớn see on the Nikon D700 full-frame digital SLR. Even for pros, a small flash in a pinch is a welcome option.

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The larger 3-inch LCD pushed only a few items around on this decidedly large camera: the four buttons lớn the left have moved closer to lớn the edge, & they"re joined by the delete button (marked by a trashcan icon). The power nguồn switch, too, got nudged right a bit. Just right of the optical viewfinder are four holes for the speaker, where you can listen to audio recorded in Movie mode. The Print/Share button just left of the optical viewfinder also serves as the Live View mode toggle button. And the AF-ON button that first appeared on the Canon 40D arrives on the 5D Mark II. Also cảnh báo the seal around the hot shoe, designed khổng lồ mate with the Canon 580EX II lớn keep water out.

One bit that puts the Canon 5D Mark II into the premium category is the small light sensor that appears just right of the power nguồn switch, which adjusts the LCD brightness based on the ambient light.

The thumbgrip on the back is also large & textured for an excellent hold.


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From the vị trí cao nhất we get a view of the finest kit lens Canon has ever bundled with a camera, the image-stabilized Canon EF 24-105mm f/4 L IS zoom lens. (Click here lớn see our reviews of this lens on SLRgear.com). The Canon 5D, lượt thích its competitors, has no Scene modes, though it does have three custom modes where you can store your own settings. Another new addition from the Canon 50D is the new Creative tự động mode, which allows the web7_user lớn adjust the Flash, resolution, drive mode, và Picture Style, as well as shoot RAW. A special thực đơn lets you adjust aperture settings in terms of desired background blur, & exposure times in terms of whether you want the image darker or brighter.

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The control buttons to lớn the right, appearing above the Status LCD have been reshuffled và regrouped from their positions on the original 5D, with Metering và White balance bundled on the first button, AF và Drive modes on the second button, & ISO and EV compensation on the third button. The Status LCD light button has been moved from first position near the pentaprism to lớn fourth. It might be that the larger pentaprism inside made this move necessary, as the Canon 50D"s illumination button didn"t move.


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Larger viewfinder. Click for callouts.


Viewfinder. The viewfinder in the Canon 5D Mark II has a bigger pentaprism, & now offers 98% coverage instead of 96%, along with a 21mm eyepoint instead of 20mm. Owners of the original Canon 5D will also need to know that along with the viewfinder improvements comes a change to lớn a newer series of interchangeable screens.

I still find that the 5D Mark II"s viewfinder vignettes somewhat when I look through it, but it is indeed larger than the original 5D. It"s also surprisingly larger than the Nikon D700; though the D700"s viewfinder is more comfortable to lớn use. Finally, the 5D Mark II"s viewfinder is smaller than the 1Ds Mark III & Sony A900, by about the same amount.

LCD. The Canon EOS 5D Mark II"s LCD display has also been upgraded khổng lồ the same unit used in the Canon 50D, which has a resolution of 920,000 dots, a 160-degree viewing angle, & Canon"s triple coatings that aim to reduce glare, smudges, và scratches. Though at first the xanh reflection is unfamiliar, it is superior in sunlight khổng lồ some other displays on the market, including the original 5D"s clear LCD glass.


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Extra AF points.


Autofocus system. The autofocus sensor from the original Canon 5D has been carried over in the new 5D Mark II, still offering nine user-addressable autofocus points (one cross-type) and 6 non-addressable assist points, but the 5D Mark II autofocus system does include the lens micro-adjustment và light source detection functions we"ve seen on the company"s other recent digital SLRs, so there are AF improvements even if the sensor itself hasn"t been overhauled.

In use, I found the AF system to lớn be quite good for portraits & other work, though it"s hard to get used to the array"s concentration in the center of the frame. The same AF-array dimensions are used in the Canon 50D, where the array seems huge, but on the 5D Mark II, most of the 35mm frame area remains uncovered.

Autofocus is fast, though, with full autofocus và image capture taking only 0.206 second. Focus speed varies by lens, of course, but the 5D Mark II"s computation & slewing speed is among the fastest I"ve used. There"s an advantage to having fewer AF points when it comes to lớn computational speed, khổng lồ be sure, as the 51-point AF system on the Nikon D300 và D700 can delay while the camera analyses the scene, while the 5D Mark II is quite a bit snappier.


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Live View. Click image for callouts.


Live View. The Canon 5D Mark II also bests the original 5D by offering a live view function which is similar to lớn that seen on the recent Canon 50D digital SLR, including a face-detection mode.

Though I advocate using the optical viewfinder most often when shooting the Canon 5D Mark II, Live View still has its uses, particularly when working on a tripod. But lượt thích other recent digital SLR offerings, the Canon EOS 5D Mark II offers two modes for focusing in Live View mode, one of which is faster than the other. Note that both modes are quite a bit slower than autofocusing via the optical viewfinder, hence my recommendation to use the optical viewfinder by default.

In both modes, you have to press the AF-ON button on the back of the 5D Mark II khổng lồ autofocus. If you only press the shutter release, the camera will not focus. This takes some getting used to.


Quick mode. The first Live View focusing mode uses the traditional SLR method of flipping the mirror back down to use the phase-detect autofocus sensors for focusing. This can indeed be quicker so long as you put one of the nine AF points over an area with good contrast that enables fast focusing.


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New to the system is that the selected AF points light up after the mirror flips back up lớn tell you which areas are in focus, rather than leaving that to guesswork as the Rebel XSi does. Autofocus in this mode is quite a bit slower than with the optical viewfinder, but faster than Live mode.


Live mode. Contrast-detect mode is called Live mode, because the Canon 5D Mark II does its focusing with the data that comes live from the sensor. You get a rectangle that you can move around the screen with the Multi-controller. When you press the AF-ON button, the Canon 5D Mark II focuses and changes the gray rectangle to green. You can zoom in either five or 10 times khổng lồ confirm focus, the zoom following the AF point. It takes many seconds khổng lồ focus in this mode, between 2.24 khổng lồ 7.32 seconds in our testing. A histogram can also be overlaid over the image, though it"s a shame that the histogram is still opaque, blocking so much of the image, rather than translucent as other companies have managed.


Live Face mode. We"ve all seen face detection by now, & if you"ve seen Canon"s face detection on a simpler digital camera, you know about how well it detects faces on the Canon 5D Mark II: quite well. Autofocus is a lot slower on the 5D Mark II, however, as it has khổng lồ process a lot more data to lớn judge focus, & move far larger optics than are found in a digicam; but it"s not bad. It"ll take a few seconds to focus at times, especially when handheld. Sometimes faster, sometimes slower. The system can track far more faces than other systems we"ve seen at this point, though, at up khổng lồ 35 forward-looking faces.

If the Canon 5D Mark II detects more than one face, it adds two arrows around the frame it"s placed around its top-priority face, telling you that you can turn the Quick Command dial to select another face as the priority.

Interface. The Canon 5D Mark II"s interface is mostly inherited from the Canon EOS 50D. It includes a tabbed thực đơn that you can navigate with either the Main dial & the Quick Control dial or the Multi-controller joystick. The Main dial moves among tabs regardless of your position in the menu, và the Quick Control dial moves up và down through the thực đơn items. The Multi-controller moves through the tabs when pressed left & right, and moves up and down when pressed up and down. Pressing down on the Multi-controller or mix button (in the middle of the Quick Control dial) confirms selections.

It"s a well-evolved menu system that is easy khổng lồ learn.

Canon kept the đứng đầu deck status display, which is good for me, because I still use that by default; but the new rear menu is also handy for making changes as well, especially when the camera is mounted on a tripod. I"m not always happy with it, as it doesn"t always respond how I think it should. Sometimes moving down doesn"t take you to the place you think it should, instead requiring several different direction changes to lớn reach the control you need. But overall, I"m glad it"s there as a live menu, rather than just a static display.

Modes. Lượt thích the original 5D, the 5D Mark II has no special Scene modes as are found on the Canon 50D và Rebel series cameras. Instead, the 5D Mark II emphasizes the basics: Program, Shutter (Tv for Time Value), Aperture (Av for Aperture value), Manual, và Bulb.

In addition khổng lồ the green zone mode, or Full Auto, there"s a Creative auto mode as seen on the EOS 50D. The CA mode is a cross between the tự động hóa and Program modes. When set to lớn CA mode, the Canon 5D Mark II allows the web7_user to lớn adjust the Flash, resolution, drive mode, và Picture Style. Setting aperture and exposure are converted to lớn easier concepts of background blur (blurred or sharp), và exposure màn chơi (darker or brighter) with a slider that"s adjusted with the Quick Control dial. The more complex exposure decisions remain under automatic control in CA mode. The exposure slider is the more useful, standing in as a more comprehensible EV adjustment for new users.

Canon has also improved upon the single Custom mode offered on the 5D to lớn include three Custom modes on the 5D Mark II. All of these new modes can be accessed directly on the camera"s mode dial.

Speed boost. The Canon EOS-5D Mark II gets a mild tốc độ boost over its 3 fps predecessor, being rated as able to lớn shoot images at 3.9 frames per second. Our measurements come up with 3.89, which is close enough for us. That"s not bad considering how many bits it"s moving thanks lớn its 21.1-megapixel sensor. Burst depth varies depending on whether you"re using a standard or UDMA CompactFlash card. & since the 5D Mark II is compatible with UDMA through mode 6, the buffer clearing speeds could get faster. For UDMA cards, the 5D Mark II allows unlimited burst depth when shooting large / fine JPEGs, or as many as 14 Raw files; slightly shorter than the 17 Raw tệp tin burst possible in the original 5D, but then that"s perhaps understandable given the higher burst speed và vastly higher image resolutions and resulting file sizes. Non-UDMA CompactFlash burst depth in Raw mode is only just slightly shorter, at 13 frames.

Variable RAW. The Canon 5D Mark II also offers a Variable Raw mode as seen in some of the company"s past cameras. Given the huge 21.1-megapixel resolution, it"s likely to lớn be used quite often by photographers who don"t need the vast file sizes but want the 5D Mark II"s other features. The reduced Variable RAW sizes are approximately ten and five megapixels respectively, và are assembled from the full image frame without any cropping.

A few other useful features seen on Canon"s past EOS 50D & carried over here are High ISO Noise Reduction (adjustable in four steps), an auto Lighting Optimizer (again offering four steps), & perhaps most importantly for a full-frame digital SLR, Lens Peripheral Illumination Correction, or vignetting correction.

Sensor. Compared lớn the image sensor from the original Canon 5D, the px pitch in the 5D Mark II"s imager has dropped from 8.2µm to lớn 6.4µm -- the same as that of the 1Ds Mark III"s sensor, as well as the EOS 20D"s sensor, & the hardware architecture is also identical khổng lồ that of the pro camera. However, the Canon 5D II"s sensor sports new RGB color filters with an improved transmission rate.

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A couple of improvements from the Canon 50D"s image sensor also make their way into the 5D Mark II"s imager: an improvement in the per-pixel, light-sensitive area, và nearly gapless microlenses. They"ve also improved the output đầu ra amplifier khổng lồ enable faster transfers, as well as a 30 fps HD movie đầu ra without heating up the sensor, và Canon tells us that there are other unspecified improvements to lớn the way the image is developed on-chip. These changes are all said lớn come together to mean a cleaner signal that requires less amplification. According lớn our chạy thử results, Canon"s engineers got it right, as the Canon 5D Mark II produces impressive images.

Storage và battery. The Canon 5D Mark II uses a standard CompactFlash Type I and II slot, but it supports UDMA Mode 6, which isn"t even available on the market yet. Current UDMA cards tư vấn data transfer of up khổng lồ 45MB per second, but when the Mode 6 cards arrive, they"ll tư vấn up khổng lồ 133MB per second.

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The bigger web7_news for the entire EOS line is the 5D Mark II"s new Intelligent lithium-ion battery pack. Though it looks a lot like the old BP-511A that"s still in the 50D, the 5D Mark II"s LP-E6 has greater capacity (1,800mAh) và intelligence built in. While Sony has had these types of packs for some time, Canon"s cameras have been quite a bit less informative about the battery status until the camera was close to lớn running out.

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The LP-E6 is even more informative than past systems, reporting battery life with six levels on the battery icon, và one percent increments in the Battery Info menu. The number of shots fired since last recharge is also recorded và accessible through the same menu, & the overall expected battery life is also tracked, giving an indication of when a battery has reached the end of its usable life. Since each battery has a unique serial number, this status can be displayed on the Canon 5D Mark II, making it easier to lớn pick the best batteries from your arsenal on an important or longer shoot. It"s quite a leap for the EOS system, & I"m hoping we"ll see it on all future EOS cameras.

The new battery also has new recessed contacts, so it requires a new charger, the LC-E6 in the Americas, which includes the flip out prongs, and the LC-E6A which instead includes a power cord matched lớn the common power supplies in other regions.

Battery & Wireless grips. There"s a new vertical battery grip, the BG-E6, which can accept either two LP-E6 batteries or a tray of AA batteries. There"s also a new WFT-E4A wireless transmitter, which is essentially a clone of the WFT-E3A unit compatible with the Canon 40D và 50D, but with updates to tư vấn the power and connection requirements of the EOS 5D II camera body. This wireless transmitter allows you lớn attach either a GPS or a USB storage device.