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图丽(Tokina)AT-X PRO SD11~16mm F2.8(IF)DX镜头(图1),可用于APS-C画幅佳能数码单反相机,其等效焦距为16.5~24mm,能全程实现F2.8光圈拍摄。镜头内部采用了多片非球面镜片和超低色散镜片,可以实现高画质的记录拍摄。该镜头结构上,在保持全程F2.8光圈的前提下,采用内变焦方式,使得镜身体积更小,镜头结构更紧凑,多项光学成像指标位于同类镜头的前列。这款镜头的常见故障是光圈组件上的排线损断,造成镜头光圈大小无法控制,需要进行维修。
The Tokina AT-X PRO SD11 ~ 16mm F2.8 (IF) DX lens (Figure 1) can be used with APS-C format Canon digital SLR cameras with an equivalent focal length of 16.5 ~ 24mm and full F2. 8 aperture shooting. The lens uses a multi-piece aspherical lenses and ultra-low dispersion lenses, enabling high-quality recording and recording. The lens structure, while maintaining the full F2.8 aperture under the premise of the use of internal zoom, making the smaller lens body, the lens structure is more compact, a number of optical imaging targets in the forefront of similar lenses. The common fault of this lens is the cable assembly on the aperture assembly is broken, resulting in the lens aperture size can not be controlled, need to be repaired.