35mm Telephoto Lens for Pi
来自Waveshare Wiki
说明
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使用说明
这是CS/C 镜头,需要配合IMX477 12.3MP Camera 或者 Raspberry Pi HQ Camera使用
镜头参数
镜头型号 | 6mm 广角镜头 |
16mm 长焦镜头 |
25mm 长焦镜头 |
35mm 长焦镜头 |
8-50mm 变焦镜头 |
镜面尺寸 | 1/2" | 1" | 2/3" | 1" | 1/2.3" |
通光孔径 | F1.2 | F1.4-16 | F1.4-16 | F1.7-16 | F1.4 |
镜头安装接口 | CS-mount | C-mount | |||
视场角 | 63° | 1″ 44.6° × 33.6° 2/3″ 30.0° × 23.2° 1/1.8″ 24.7° × 18.6° 1/2″ 21.8° ×16.4° |
2/3" 20.2°×15.1° 1/1.8″ 16.5°×12.4° 1/2″ 14.5°×10.5° |
1″ 20.9°×15.8° 2/3″ 14.4°×10.8° 1/2″ 10.5°×7.9° |
45°-5.35° |
后焦距 | 7.53mm | 17.53mm | |||
光学总长 | - | 67.53mm | - | ||
畸变 | - | 1″(-0.7%) 1/2″(-0.5%) 1/3″(-0.15%) |
0.05% | 0.35% | - |
最近物距 | 0.20m | 0.20m | 0.25m | 0.30m | 0.20m |
外形尺寸 | Φ30.00 × 34.00mm | Φ39.00 × 50.00mm | Φ34.00×34.00mm | Φ35.00×34.00mm | Φ40.00×68.30mm |
操作方法 | 手动光圈 | ||||
产品重量 | 53g | 133.7g | 82g | 78g | 148g |
资料
相关链接
FAQ
- 在不同的拍摄环境下,可能会出现白平衡效果不正常的情况。用户可以自己根据实际使用情况调节白平衡参数。
- 以下opencv的调节代码只作参考。(该代码由RPi Camera (G)使用用户分享)
import picamera import picamera.array import cv2 from time import sleep import numpy as np def test_gcamera(): cv2.namedWindow("img",0) with picamera.PiCamera() as camera: camera.resolution = (1920, 1080) camera.awb_mode = 'off' rg, bg = (1.8, 1.4) camera.awb_gains = (rg, bg) with picamera.array.PiRGBArray(camera) as output: for foo in camera.capture_continuous(output, 'rgb', use_video_port=True): img = cv2.cvtColor(output.array, cv2.COLOR_RGB2BGR) cv2.imshow("img", img) cv2.waitKey(1) cv2.imwrite("test.jpg",img) r, g, b = (np.mean(output.array[..., i]) for i in range(3)) if abs(r - g) > 2: if r > g: rg -= 0.1 else: rg += 0.1 if abs(b - g) > 1: if b > g: bg -= 0.1 else: bg += 0.1 camera.awb_gains = (rg, bg) output.seek(0) output.truncate(0) if __name__=="__main__": test_gcamera()