聚焦系统
| 光阑叶片数量 |
9 |
| 对角线视角(最大) |
31.5 ° |
| 最大光圈 |
22 |
另外
| 镜片颜色 |
Transparent |
| 镜头结构(元素 /组) |
7/6 |
smc PENTAX FA 77mm F1.8 Limited
The medium-telephoto perspective makes this lens ideal for many applications including portrait, landscape and still life photography.
High-performance optics ensure outstanding image quality, edge-to-edge sharpness, and depth of field control.
The high-grade aluminum construction of the lens barrel, hood and cap provides this lens with the utmost durability and elegant design.
Developed for PENTAX film SLR cameras, however full-frame optics are also compatible with PENTAX digital SLR cameras.
A fast F1.8 aperture offers outstanding depth of field control in any lighting condition.
PENTAX's exclusive FREE (Fixed Rear Element Extension) focusing system ensures sharp, crisp image reproduction over the entire focusing range.