Raspberry Pi Camera read speed too slow

Question

I'm trying to write image frames from Raspberry Pi camera 1.3v. I'm using PiCamera library. When I run simple code to preview the camera, it shows frames almost real time.

import time
import picamera
with picamera.PiCamera() as camera:
    camera.start_preview()
    time.sleep(10)
    camera.stop_preview()

But following code doesn't write frames at real time. There is about 1 second delay between frames. When using USB webcam with openCV imwrite(), it writes much more than that rate.

import time
import picamera
with picamera.PiCamera() as camera:
    camera.start_preview()
    try:
        for i, filename in enumerate(camera.capture_continuous('image{counter:02d}.jpg')):
            print(filename)
            if i == 59:
                break
    finally:
        camera.stop_preview()

Answer 1

Use os.system(raspistill), I'm using it a lot in python To get it use import os and to use put os.system("put bash command here") try not to use sudo in your commands though