đánh giá canon 24-70 f2.8

Note: The Canon EF 24-70mm f/2.8L USM Lens has been replaced by the Canon EF 24-70milimet f/2.8L II USM Lens.

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The Canon EF 24-70mm f/2.8L USM Lens is an impressively high performing zoom lens.I regard it as one of the best general purpose lenses available & for the same reasons, it is one of the most-professionally-used Canon lenses.The 24-70 L is as good as it gets in this focal length range.

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The 24-70 L shown above is mounted lớn a Canon EOS-1D Mark III.

The Canon EF 24-70milimet f/2.8L USM Lens is a very sharp lens - few zoom lenses reach this cấp độ of sharpness.The 24-70 L is sharp in the center at f/2.8 at all focal lengths & performs very well in the corners.Some corner softness is visible at the wide over of the focal length range and more softness is apparent in the 50-70mm corners.As usual, stopping down (selecting a narrower aperture) lớn f/5.6 makes a big difference in the longer focal length corners.

The wide open 24mm corners are most-affected by vignetting.Vignetting is very well controlled, but apparent in the corners at f/2.8 at 24mm on a full frame body.Vignetting improves as the focal length increases và the aperture is narrowed.At comparable apertures, the 24-70 L shows less vignetting than the also-excellentCanon EF 24-105milimet f/4L IS USM Lens- a typically-expected result when comparing a fast lens khổng lồ a slower lens.

Like most 24-xx zoom lenses, the 24-70 L shows some barrel distortion on the wide over.More specifically, a bulge in the middle of the frame.Barrel distortion disappears around 35mm.A very slight pincushion distortion begins at 50mm and becomes moderate by 70mm.

màu sắc, contrast và saturation are excellent.CA (Chromatic Aberration) is very well controlled - especially for a zoom lens.The wide 8-blade aperture produces a nice quality background blur & a nice amount of it.

Prime lenses (fixed focal length lenses) are often compared favorably to lớn the 24-70 L.They are generally less expensive sầu, smaller, lighter, faster (aperture) và very sharp.My personal preference is for zoom lenses for my photography applications in this focal length range.To me personally, the ability to change framing instantly far outweighs the slight image quality advantages fixed focal length lenses offer over the 24-70 L.

I"m often asked - can images shot with a consumer zoom lens be post-processed lớn result in images similar lớn 24-70 L images?The answer is: you can adjust contrast và saturation, but you cannot add missing detail.And, color can be very difficult lớn match later.So, using a better lens will usually result in better post-processed images.Most primes and L lenses are noticeably better than consumer zooms.

Image chất lượng is not the only pro-grade feature of the Canon EF 24-70mm f/2.8L USM Lens.Excellent AF is part of the equation.A Ring USM (Ultrasonic Motor) AF system delivers quiet, fast and accurate autofocus.The 24-70 L"s f/2.8 aperture enables the enhanced-sensitivity of many Canon EOS DSLR body"s AF points.As usual for a Ring USM AF system, FTM (Full-Time Manual) focusing is enabled.The 24-70 L does not extkết thúc with focus & the 77mm filter ring does not rotate.

ModelMFDMM12mm ET25mm ET
Canon EF 16-35milimet f/2.8L II USM Lens0.92"(0.28m)0.22xn/c - 0.62xn/c - 1.11x
Canon EF 17-40mm f/4L USM Lens0.92"(0.28m)0.25x0.83 - 0.32x1.02 - 0.40x
Canon EF-S 17-55mm f/2.8 IS USM Lens1.15"(0.35m)0.17x0.45 - 0.23x0.71 - 0.51x
Canon EF-S 17-85milimet f/4-5.6 IS USM Lens1.15"(0.35m)0.2x0.43 - 0.14x0.72 - 0.33x
Canon EF 24-70mm f/2.8L USM Lens1.25"(0.38m)0.29x0.63 - 0.18x1.25 - 0.40x
Canon EF 24-105milimet f/4.0L IS USM Lens1.48"(0.45m)0.23x0.60 - 0.40xn/c - 0.61x
Canon EF 28-135milimet f/3.5-5.6 IS USM Lens1.64"(0.50m)0.19x0.53 - 0.09x1.09 - 0.21x

The Canon EF 24-70milimet f/2.8L USM Lens" MFD (Minimum Focus Distance) is about best (shortest) in class even without an extension tube.This short focus distance provides a very nice MM (Maximum Magnification).While not cthua trận lớn a 1:1 macro lens, the 24-70 L can take nice flower shots, sản phẩm pictures ...Although it is not compatible with Canon"s extenders,extension tubes will extover the 24-70 L"s macro capabilities.Canon"s extension tube offering are the FE 12mm extension tube andEF 25milimet extension tube.The Canon 500D is a close-up lens that attaches lớn the filter threads -it also allows closer focusing distances - sorry, I don"t have sầu the spec for this one.

Sporting a red Canon L Series Lens ring,the 24-70 L"s build chất lượng is also, as expected, top of the line.Though not light, the 24-70 feels solid, is comfortable lớn handle & has a logical layout.The focus và zoom rings are nicely-sized & operate smoothly.Weather sealing (when attached lớn a weather sealed body) completes the physical unique package.

ModelWeightDimensions w/o HoodFilter
Canon EF 16-35mm f/2.8L II USM Lens22.4 oz(635g)3.5 x 4.4"(88.0 x 112.0mm)82mm
Canon EF 17-40milimet f/4L USM Lens17.5 oz(500g)3.3 x 3.8"(83.5 x 97.0mm)77mm
Canon EF-S 17-55mm f/2.8 IS USM Lens22.8 oz(645g)3.3 x 4.4"(83.5 x 110.6mm)77mm
Canon EF-S 17-85mm f/4-5.6 IS USM Lens16.8 oz(475g)3.1 x 3.6"(78.5 x 92.0mm)67mm
Canon EF 24-70milimet f/2.8L USM Lens33.6 oz(950g)3.3 x 4.9"(83.2 x 123.5mm)77mm
Canon EF 24-105mm f/4.0L IS USM Lens23.6 oz(670g)3.3 x 4.2"(83.5 x 107.0mm)77mm
Canon EF 28-135milimet f/3.5-5.6 IS USM Lens18.9 oz(540g)3.1 x 3.8"(78.4 x 96.8mm)72mm

The Canon EF 24-70mm f/2.8L USM Lens tips the scales at 33.6 oz (950g) - about 50% more than it"s closest Canon competitors, theCanon EF-S 17-55milimet f/2.8 IS USM Lens và theCanon EF 24-105milimet f/4.0L IS USM Lens.Of course, the 17-55 gains its advantage by not delivering a full frame 35milimet image circle (being an "EF-S" lens) và by having a lesser build chất lượng.And the 24-105 allows only một nửa as much light through its body at wide open aperture (f/4 vs. f/2.8).

The 24-70 L"s 77mm filter diameter makes sharing filters(such as a circular polarizer filter)with most of Canon"s other L-Series zoom lenses easy (và more affordable of course).

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Pictured above from left lớn right are theCanon EF 28-135milimet f/3.5-5.6 IS USM Lens,Canon EF 17-40milimet f/4L USM Lens,Canon EF 24-105milimet f/4L IS USM Lens andCanon EF 24-70mm f/2.8L USM Lens.

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Pictured fully extended above sầu from left lớn right are theCanon EF 28-135milimet f/3.5-5.6 IS USM Lens,Canon EF 17-40mm f/4L USM Lens,Canon EF 24-105mm f/4L IS USM Lens andCanon EF 24-70mm f/2.8L USM Lens.Of note is that the 24-70mm L reverse extends - it becomes longest at 24milimet as shown above.Most lenses including the 24-105 L become fully extended at their longest focal length setting.

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Pictured above sầu from left lớn right with their respective & included lens hoods in place are theCanon EF 17-40mm f/4L USM Lens,Canon EF 24-105mm f/4L IS USM Lens andCanon EF 24-70mm f/2.8L USM Lens.Of note with the lens hoods is that the 24-105 L"s hood extends with the lens while the much larger 24-70 L hood stays in one place.Most lenses including the 24-105 L become fully extended at their longest focal length setting and their lens hoods travel along with this extension,but the 24-70mm L reverse extends - it becomes longest at 24milimet as shown above sầu.

Because the 24-70 L lens hood is in a fixed position (it does not extend/retract), the objective lens retracts deeper into lớn the hood as the focal length is increased.In other words, the 24-70 L lens hood extends much farther from the objective element of the lens at 70milimet than at 24mm.The 24-70 L is using an appropriate-for-the-selected-focal-length lens hood at all focal lengths while the 24-105 & most other lenses are using a made-for-24milimet hood at all focal lengths (lượt thích most zoom lenses).

24-70milimet falls right in the middle of the general purpose lens focal length range.The Canon EF 24-105mm f/4L IS USM Lens Reviews has a helpful focal length comparison that includes this range.

Though not ultra-wide on a 1.6x FOVCF body toàn thân, 24milimet is noticeably wider than the 28mm minimum focal length provided by lenses such as the discontinuedCanon 28-70 f/2.8L Lens & some of Canon"s consumer zooms such as theCanon EF 28-135mm IS USM Lens (a good value lens).

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The real world uses for the Canon EF 24-70mm f/2.8L USM Lens are endless.

The 24-70 L is the bread và butter wedding lens for many professional photographers.The 24-70mm focal length range allows a large group shot or a close-up picture of the bride without a lens change.With a fixed maximum f/2.8 aperture across the entire focal length range, this lens is easy to use & is as fast (wide aperture) as any Canon zoom lens made.Available light shots are possible indoors including in most churches (though a high ISO setting will usually be required).Wide open camera settings vị not change with the focal length - allowing the photographer lớn focus on getting the job done.

As portraits are a staple of wedding photography, the Canon EF 24-70milimet f/2.8L USM Lens makes a great portrait lens.On a full frame body, group, environmental & moderately tight portraits work best.Some pincushion distortion at 70milimet will even slyên your subject a little. :)70mm is too wide for a tight head shot - for my taste at least.Save those for the 70-200 L.On a 1.6x body toàn thân, more space is needed for group photos at 24milimet, but tighter 70milimet portraits are more pleasing due lớn the longer distance they will be framed from.

Since shooting a wedding is not too dissimilar from photojournalism (& many wedding photographers employ similar techniques),the 24-70 L is a great photojournalism lens.

Indoor và low light sports photographers are often working in similar conditions as wedding photographers & photojournalists.Thus the 24-70 L is often employed for sports needs in this focal length range.Since sports action is usually moving fast, the f/2.8 aperture is often the minimum opening necessary khổng lồ stop action at these venues.

The Canon EF 24-70milimet f/2.8L USM Lens will work just as well in your trang chủ as it does in the church or other indoor venue.Capturing the memories of family life is, in my opinion, one of the most important photography pursuits.You can sell the lens later, but those precious family moments will never be baông xã.

The 24-70 L is a very good landscape lens on a full frame toàn thân.It will work fine on a crop body toàn thân, but 24milimet is a little long for the wide end of a dedicated landscape lens.Add a Canon EF-S 10-22mm USM Lens khổng lồ your 24-70 L kit if landscapes are your goal.Or get the EF-S 17-55.

The biggest downside of the 24-70 L (in my opinion) is it"s kích cỡ and weight.Especially with its large lens hood, this lens is not small - or light - when used as a walk-around lens. If you care about your image unique, you will quickly get over this downside after reviewing your results.

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All said, I think the Canon EF 24-70mm f/2.8L USM Lens is one of the best Canon walk-around/all-purpose lenses made.Be sure to lớn read the Canon EF 24-105milimet f/4L IS USM Lens Review &, if you are using an EF-S capable toàn thân, theCanon EF-S 17-55mm f/2.8 IS USM Lens Review before making your decision.


Chuyên mục: Kiến Thức