聚焦系统
| 固定焦距 |
50 mm |
| 最大光圈 |
22 |
| 最近聚焦距离 |
0.45 m |
| 光阑叶片数量 |
7 |
| 组件应用 |
SLR |
| 最小光圈 |
1.8 |
smc DA 50mm F/1.8, 122g
Designed for exclusive use with PENTAX K-mount interchangeable-lens digital cameras, this unifocal, medium-telephoto lens features a large maximum aperture and a round diaphragm to produce a natural, beautiful bokeh (out-of-focus) effect, making it ideal for portraits and casual snapshots. Its outstanding performance and compact, lightweight design also make it handy for photographers of all levels — from interchangeable-lens digital camera beginners to discerning, experienced photographers.
<b>High-quality image description</b>
Thanks to state-of-the-art PENTAX optical design technology, the image circle of the lens has been optimized for K-mount interchangeable-lens digital cameras to effectively compensate astigmatism for sharp, clear images.
<b>Easy-to-handle medium-telephoto lens</b>
When mounted on a PENTAX K-mount interchangeable-lens digital camera body, this medium-telephoto lens offers a focal length of approximately 76.5mm in the 35mm format, offering a moderate-telephoto perspective perfect for portraiture with a smooth, beautiful bokeh effect in the background and snapshots cropping a part of the subject. Its front surface is treated with the PENTAX-original SP (Super Protect) Coating to not only repel dust, water and grease, but also allow easy removal of grease adhering to the surface. This means worry-free use in all kinds of shooting locations.
<b>Large maximum aperture</b>
Thanks to its large F1.8 maximum aperture, the lens can easily produce images with a very shallow depth of field. Its round diaphragm produces a natural, beautiful bokeh effect, while minimizing streaking of point light sources. The large aperture also makes it possible to use faster shutter speeds under poor lighting conditions to minimize the risk of camera shake and subject shake.
<b>Compact, lightweight design</b>
Measuring a mere 38.5 millimeters in length and weighing just 122 grams, this lens has the compact, lightweight design that lets it come along on every outing. Its solid, refined appearance matches the design of a top-class camera body.
