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Canon EF 17-40mm f/4.0L USM SLR Ultra-wide lens 黑色

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Canon
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EF 17-40mm f/4.0L USM
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8806A014
種類
The light-gathering device of a camera, typically containing a group of compound lenses. Lenses come in different lengths, with very long lens used for long-distance photography.
相機鏡頭
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建立者: Canon: 一個資料規格表是從製造商的官方來源匯入的。但是這個資料規格表尚未被 Icecat 編輯器標準化。
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發佈日期: 06 3月 2007
Icecat 第一次注意到該產品被列入通路合作夥伴的價格清單的日期
產品瀏覽次數: 12273
這個統計數字是根據 71891 利用電子商務網站 〈網路商店、代理商、比價網站、電子商務平均價格、採購系統,等等〉下載此 Icecat產品規格表,從 06-03-07 免費的 Open Icecat 內容發佈只有包含贊助品牌,被使用在 70223 免費開放给 Open Icecat 使用者.
訊息修訂於: 30 3月 2017 10:10:41
此產品規格表在 Icecat 系統內最近更新的日期
簡短說明 Canon EF 17-40mm f/4.0L USM SLR Ultra-wide lens 黑色 :
簡短的編輯描述Canon EF 17-40mm f/4.0L USM SLR Ultra-wide lens 黑色

EF 17-40mm f/4.0L USM
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Canon EF 17-40mm f/4.0L USM SLR Ultra-wide lens 黑色:
由製造商提供正式的市場行銷文檔%%title%% 
The EF17-40mm f/4L USM is a lightweight ultra wide angle Canon EF zoom lens. It is especially well suited for use with digital EOS SLR cameras with a focal length conversion factor higher than 1.

Ultra wide lens for analogue EOS SLR cameras
The EF17-40mm f/4L USM is an ultra wide angle Canon EF zoom lens meant for professional and high amateur SLR EOS camera users.

Standard zoom lens for digital EOS SLR cameras
While it is an excellent lens when used with an analogue SLR camera, the EF17-40mm f/4L USM is especially well suited for digital SLR cameras with an imaging sensor size smaller than the 35mm format. Indeed on such digital SLR cameras these focal lengths can give an angle of view approximately equivalent to that of a 28-70mm lens used on a 35mm camera, which makes it the ideal standard zoom lens.

Superior optical performance
The EF17-40mm f/4L USM has 12 lens elements arranged in 9 groups. Super Spectra Coating on the elements ensures excellent colour balance and minimises ghosting and flare. To provide superb image quality over a 17-40mm zoom range the lens uses three aspheric elements of two different types, while Super UD (Ultra-low Dispersion) glass is used to prevent the chromatic aberrations that often can degrade the subject edge clarity.

Extensive set of high-end features
Minimum focusing distance is just 28mm throughout the entire zoom range.

The Auto-focus works silently and quickly thanks to a fast central processing unit with an improved AF algorithm. You can override AF mode with manual focus should you wish.

Controlled by an electromagnetic diaphragm, the EF17-40mm f/4L USM’s circular aperture can achieve a more attractive appearance to out of focus background areas in a picture.

The front of the lens does not rotate as you focus. This means, for example, that polarising filters still function effectively as you zoom in and out. At the rear of the lens there’s a drop-in gelatin filter holder.

Highly resistant to moisture and dust, the EF17-40mm f/4L USM is ideally suited for use in harsh environments. Environment friendly lead-free glass is used throughout its construction.
簡短摘要說明 Canon EF 17-40mm f/4.0L USM SLR Ultra-wide lens 黑色:
這個 %%title %%規格表的簡短摘要是自動生成的,並使用產品標題和前6個關鍵指標。
Canon EF 17-40mm f/4.0L USM, SLR, 12/9, Ultra-wide lens, 0.28 m, Canon EF, 17 - 40 mm
完整摘要描述 Canon EF 17-40mm f/4.0L USM SLR Ultra-wide lens 黑色 :

Canon EF 17-40mm f/4.0L USM. 零組件應用範圍: SLR, 鏡頭結構(元素/組): 12/9, 鏡頭類型: Ultra-wide lens. 自動對焦: USM, 最高放大倍率: 0.24 倍數. 產品色彩: 黑色. 直徑: 8.35 cm, 濾波器大小: 7.7 cm, 長度: 9.68 cm

這是一個根據前五個產品規格組的前三個規格來 Canon EF 17-40mm f/4.0L USM SLR Ultra-wide lens 黑色 的自動生成的完整摘要。

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鏡頭系統
零組件應用範圍 *
SLR
鏡頭結構(元素/組) *
12/9
鏡頭類型 *
Ultra-wide lens
最近對焦距離 *
0.28 m
最大光圈 *
22
鏡頭安裝接口 *
Canon EF
焦距範圍
17 - 40 mm
光圈葉片數
7
性能
自動對焦
USM
最高放大倍率
0.24 倍數
設計
產品色彩
黑色
重量及尺寸
直徑 *
8.35 cm
濾波器大小 *
7.7 cm
長度 *
9.68 cm
重量 *
扣除包裝的產品重量(淨重)。如果可能的話,淨重包含標準配件和耗材。請注意,有時製造商給予產品重量太商業化的解釋,而扣除配件和/或耗材的重量。
500 g
資源 Testseek 概述 平均評價
評價
Updated:
2011-08-14
Testseek 廣收 20 關於 Canon EF 17-40mm f/4.0L USM 的專家意見,專家評鑑出來的平均分數為 78,滿分為 100 分。此分數反映出專家群對於此產品的看法,請按以下連結來使用 Testseek 觀看所有評鑑內容、產品獲獎記錄與結果。...
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