如果需要星光轨迹，那么使用大光圈和较高感光度(ISO 200 - 400)就能提高每条轨迹的亮度。
If star trails are desired, using a large aperture and higher sensitivity (ISO 200-400) can enhance the brightness of each streak.
新一代红外胶片的特点是具有较高的感光度。
The characteristics of infrared films of a new generation with increased photosensitivity are presented.
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