ISO测试图：（点击图片可查看原图）
ISO 100 | 1/5 sec | f/5.6 | 48.0 mm ISO 200 | 1/10 sec | f/5.6 | 48.0 mm
ISO 400 | 1/20 sec | f/5.6 | 48.0 mm ISO 800 | 1/40 sec | f/5.6 | 48.0 mm
ISO 1600 | 1/80 sec | f/5.6 | 48.0 mm ISO 3200 | 1/160 sec | f/5.6 | 48.0 mm
ISO 6400 | 1/250 sec | f/7.1 | 48.0 mm ISO 12800 | 1/320 sec | f/8.0 | 48.0 mm
