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            LAOWA老蛙 GF 17mm F4 D-Dreamer使用說明書

            瀏覽次數: 發布時間:2019/04/18 返回

            一:前言

            地感謝您選購LAOWA(老蛙) GF 17mm F4 D-Dreamer 中畫幅系統超廣角鏡頭。為了操作上的安全,使用本產品前請務必詳細閱讀使用手冊與注意事項,并將手冊放在需要時容易取得的地方。如遇到不能解決的問題請通過售后電話獲取技術支持。

            二:主要特色

            1.  LAOWA老蛙 GF 17mm F4 D-Dreamer無反中畫幅G卡口鏡頭,等效全畫幅約13.5mm,視場角115°,讓中畫幅系統無需轉接既可捕捉寬廣的畫面,增加了中畫幅用戶的更多廣角鏡頭選擇。    

            2.   老蛙鏡頭延續對于超廣角鏡頭的極致要求,保持了近似零畸變的光學設計,采用1421片光學鏡片,內含1枚大口徑非球面鏡以及3枚異常分散鏡片,有效的解決了像差和畸變,為中畫幅苛刻的要求帶來了更高標準的畫質和體驗。

            3.  前方第一片鏡片采用了蛙眼仿生FEC (Frog Eye Coating)防水鍍膜層,使水滴、臟物不宜附著,且每塊鏡片均采用低反射多層膜,消除了攝影中易出現的鬼影和眩光。

            4.  此鏡頭擁有全金屬鏡身設計,精度更高的同時也確保了耐用性,為中畫幅用戶帶來更加堅實可靠的拍攝體驗。

            5.  鏡頭前端采用非燈泡鏡頭設計,自帶圓形遮光罩,無需另配。且鏡頭前端可裝86mm口徑的圓形濾鏡,讓攝影師擁有更輕便的拍攝體驗。

            三:注意事項

            切勿自行拆解、修改或改裝。當產品由于外力原因破損,切勿觸碰外露部分或破損邊緣處。

            切勿放置于直射陽光“下、封閉車輛中或其余高溫處,否則過高的溫度會使鏡片和其他部件產生伸縮變形。

            不使用鏡頭時,請將鏡頭前蓋蓋上或置于沒有陽光照射處。凸透鏡反射出的光線可能會聚集在附近物體上,導致發生火災。

            在逆光拍攝時,切勿將太陽置于畫面中心,應該使太陽充分偏離畫角,否則陽光會在相機內部聚集并導致火災或灼傷眼睛。

            在使用相機內置閃光燈拍攝時,由于鏡頭本身會遮擋光線而產生漸暈,因此建議您使用外設閃光燈拍攝。

            長期使用保養注意事項

            避免觸摸鏡頭表面,應用專用鏡頭布或氣吹去除鏡頭表面的塵埃,也可加裝UV鏡保護。不使用鏡頭時,應將鏡頭蓋蓋上。

            使用鏡頭紙或鏡頭布清潔時,以螺旋的方式從中間向外擦拭鏡頭上的污垢以及指印。

            鏡頭從寒冷的環境突然轉移至溫暖的環境時,鏡頭的外部以及內部鏡片將會凝結水霧,所以在轉移時應采取防潮保護措施。

            四:各部件名稱

            1. 遮光罩(不可拆卸)

            2. 濾鏡安裝螺紋

            3. 對焦環

            4. 距離刻度

            5. 景深指示刻度

            6. 光圈刻度

            7. 光圈環

            8. 安裝卡口及標記

            五:使用說明

            鏡頭安裝

            取下鏡頭后蓋。將鏡頭卡口上的安裝標記⑧對準相機座圈上的對應標記,隨后將鏡頭插入機身座圈,根據所購買卡口的安裝方向旋轉鏡頭,直至咔嚓聲鎖緊鏡頭。

            鏡頭拆卸

            關機后按下相機上的鏡頭釋放按鈕,依照所購買卡口的安裝方向反向旋轉鏡頭,隨后將鏡頭從座圈中拔出。

            裝上鏡頭后,請嘗試旋轉鏡頭確認是否已將其固定在相機上。

            由于此為非CPU鏡頭,無法提供數據信息,所以請在相機內開啟“無鏡頭釋放快門”功能。

            對焦

            此款鏡頭是全手動對焦鏡頭,合焦時,緩慢旋轉對焦環③,直至合焦。

            不要過猛過快地旋轉對焦環,避免用力過度損壞對焦環部件。

            鏡頭上的距離刻度④與景深刻度⑤是出于指導目的。實際焦點與景深可能同刻度標記稍有不同。

            如需要非常精確的對焦,請在固定好相機位置的情況下使用最大光圈對焦,對焦完成后再旋至所需要的光圈值。

            為了對焦的方便性,請開啟相機內的峰值對焦功能(視所使用相機功能而定)。

            光圈使用方法

            光圈在鏡頭上調節,根據拍攝環境和與所需要的景深,轉動光圈環來選擇對應的光圈。

            由于此鏡頭無CPU數據,所以暫時無法記錄光圈參數。

            由于光圈為手動調節,無法較好的使用快門優先模式,但可以使用光圈優先模式(測光準確度視相機型號而定)。

            規格表


            Preface

            Thank you very much for purchasing Laowa GF 17mm F4 D-Dreamer lens. For operational safety, please read this instruction manual thoroughly and place the manual where it is easy to obtain when needed. Please contact customer service for technical support in case of any unsolvable problems.

            Features

            1.  Laowa 17mm F4 D-Dreamer is a mirrorless lens designed for Fuji medium format system cameras. It gives a focal length of 13.5mm (35mm-equivalent) and 115°angle of view. It provides a native lens option for medium format users without the need to adapt lenses from other system.

            2.  Laowa lenses keep up with the highest requirements of ultra wide angle lenses with the close-to-zero distortion design. It includes 21 elements in 14 groups with one piece of aspherical glass and three extra-low dispersion glasses to eliminate chromatic aberration and distortion. It also helps to deliver corner to corner sharpness for the medium format sensors.

            3.  The Frog Eye Coating, known as ”FEC”, is applied to the front element of the lens, protecting it from water droplets and smudges. Multi-layer low-reflective coatings are applied to each glass element to eliminate ghosting and flare.

            4.   The metallic build design increases the durability of the lens, providing a more reliable shooting experience for medium-format users.

            5.   A lens hood is attached to the front of the lens and a 86mm circular filter thread is equipped.

            Precautions

            Do not disassemble or modify the lens by yourself. If it is damaged by external force, do not touch any exposed part of the lens.

            Dont expose the lens to excessive heat such as direct sunshine or a parked car as this may deform the lens elements and other mechanism.

            Close the front cap of the lens or prevent the lens from exposing sunlight when it is not in use. The light reflected by the convex lens gathering on a nearby object can cause fire.

            Do not place the sun in the center of the frame when shooting with backlight, sunlight focused on the camera when the sun is in or close to the frame could cause a fire or damage to your eyes.

            When shooting with the camera's built-in flash, the lens itself may block the light and cause vignetting, an external flash is recommended in such case.

            Maintenance Instructions

            Avoid touching the lens surface and apply lens cloth or air blow to remove dust from it, you can also install UV lens for protection purpose. Close the lens cap when it is not in use.

            Gently remove any dirt and fingerprints by rubbing the lens surface in spiral motions (from center to the periphery) with lens tissue or cleaning cloth.

            When the lens is taken from a cold environment into a warm one, condensation may develop on the surface and internal parts of the lens, so moisture protection should be taken when transferring.

            Nomenclature

            1. Lens hood (non-detachable part)

            2. Filter thread

            3. Focusing ring

            4. Distance scale

            5. Depth-of-field scale

            6. Aperture scale

            7. Aperture ring

            8. Installation mount and mark

            Direction for use

            Mounting the lens

            Remove the lens rear cap. Align the Mounting indexon your lens with the matching mounting index mark on the camera. Insert the lens into the camera and turn the lens in the attachment direction until it locks with aclick

            Detaching the lens

            Turn the camera off and press the lens release button on the camera, turn the lens in the direction opposite to that for attaching, and pull it out.

            Gently turn the lens back and forth to ensure that the lens is fully attached to the camera.

            Turn on the "lens-free shutter release" function in the camera, as it is a non-CPU lens, data information cannot be provided.

            Focusing Instructions

            Focus by turning the focusing ring as it is a manual focus only lens.

            Do not apply too much force when turning the focusing ring or moving it too quickly in case of any damage.

            The distance scaleand the depth-of-field scaleon the lens are for instructional purpose. Actual focus and depth-of-field may be slightly different from the scale.

            For the need of extremely precise focus, please fix the camera position and focus with a wide-open aperture. Get focus first and then set the required aperture.

            To facilitate focusing, please turn on [Focus peaking] in the camera setting (depending on the function of your camera ).

            Aperture Instructions

            Turn the aperture ringon the lens to choose the corresponding aperture according to the shooting situation and desired depth-of-field.

            As a Non-CPU lens, the camera cannot record the actual aperture value.

            Since this is a manual lens, aperture-priority mode is recommended to be used. (Metering accuracy will depend on the camera)

            Specifications


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