picamctrl

import time
from picamera2 import Picamera2, Preview
from picamera2.controls import Controls

# Initialize camera
picam2 = Picamera2()

# Configure for the best quality sensor format
preview_config = picam2.create_preview_configuration()
capture_config = picam2.create_still_configuration(raw={'size': (4608, 2592), 'format': 'SRGGB10_CSI2P'}, main={'size': (4608, 2592), 'format': 'BGR888'})

# Configure preview mode
picam2.configure(preview_config)

# Start the camera
picam2.start_preview(Preview.QTGL)
picam2.start()
time.sleep(1)  # Let the camera warm up

# Set manual controls using the "direct" attribute method
with picam2.controls as ctrl:
    ctrl.AnalogueGain = 1.1228070259094238  # Lowest possible value
    ctrl.ExposureTime = 10000               # Shutter speed in microseconds, e.g., 1/100s
    ctrl.AeEnable = False                   # Disable auto exposure
    ctrl.AwbMode = 6                        # Set to daylight white balance
    ctrl.Sharpness = 0.0                    # Set sharpness level to 0
    ctrl.NoiseReductionMode = 0             # Turn off noise reduction
    ctrl.Saturation = 0.0                   # Set saturation to the lowest possible value
    ctrl.Contrast = 0.0                     # Set contrast level to 0

time.sleep(2)  # Give time for the settings to take effect

# Capture a single image
jpeg_filename = "image.jpg"
dng_filename = "image.dng"

# Capture JPEG first
picam2.switch_mode_and_capture_file(capture_config, jpeg_filename, name="main")
print(f"Captured {jpeg_filename}")

# Reapply settings before capturing DNG
with picam2.controls as ctrl:
    ctrl.AnalogueGain = 1.1228070259094238
    ctrl.ExposureTime = 10000
    ctrl.AeEnable = False
    ctrl.AwbMode = 6
    ctrl.Sharpness = 0.0
    ctrl.NoiseReductionMode = 0
    ctrl.Saturation = 0.0
    ctrl.Contrast = 0.0

time.sleep(2)  # Give time for the settings to take effect

# Capture DNG
picam2.switch_mode_and_capture_file(capture_config, dng_filename, name="raw")
print(f"Captured {dng_filename}")

picam2.stop()