第三版228虚化效果完美,成像好于SSC等1、2两版,是最好的一版。光圈收到F4之后,色彩饱满,层次柔和,德国测评网站给予4.98分的总评,在NEW FD镜头中非L头评分最高的一只,超过100/4微距和50/1.4标头。最佳光圈在F4~F11,全开时分辨率依然很棒。解析度好于 EF 200/2.8,这是佳能官网的 EF 200/2.8测试链接,f2.8全开不太锐(http://www./specialsite/lensbook/ya9/44.html)。
This lens adopts a rear focusing system where only the rear group of the lens is moved for focal adjustments, and has the features of smooth focusing and an unchanged overall length when focusing.
这款镜头采用仅移动后部镜片组进行对焦调整的后部对焦系统,具有平滑对焦以及对焦时总长不变的特点。
Moreover, aberrations at close distances are kept extremely small through the use of unique lens positioning, making it possible to achieve uniform sharp image quality at maximum aperture over the entire zoom range, while offering focusing distance of 1.5m, which is the closest in the class of this lens.
Focal length: 200mm Aperture ratio: 1:2.8
Lens construction: 6 groups, 7 elements Coating: S.S.C (super spectra coating)
Angle of view: Diagonal: 12° Vertical: 7° Horizontal: 10°
Distance Scale: (m) 1.5 (magnification 0.16X) to 20.OO (ft) 5 to 70.oo
Focusing: Rear-group focusing Minimum aperture: f/32 .A Diaphragm: Automatic
Filter Size. 72mm Hood: Built-in Type Cap: C-72
Function: Auto Aperture, Full aperture metering (AE operation when used with ALL Canon automatic SLR cameras.
Length x max. diameter: 134.2mm x 81.2mm
Weight: 735g