Cannot read saturation variable unless it is set

[jmangum]

OV5640 in a PiCowbell breakout mounted to a PiCowbell doubler all being run by a RP2350 Pico 2W. Running CircuitPython 9.2.1. When I try the following:

cam = adafruit_ov5640.OV5640(i2c,
        data_pins=(
        board.GP6,
        board.GP7,
        board.GP8,
        board.GP9,
        board.GP10,
        board.GP11,
        board.GP12,
        board.GP13,
        ),
        clock=board.GP3,
        vsync=board.GP0,
        href=board.GP2,
        mclk=None,
        shutdown=None,
        reset=reset,
        size=adafruit_ov5640.OV5640_SIZE_VGA, # 640x480.  Works.  Requires 30720 bytes when quality = 10 (PREFERRED!)
    )
print('Saturation: ',cam.saturation) # Allowed values: -4 to 5 inclusive

...I get the following error...

Traceback (most recent call last):
  File "code.py", line 585, in <module>
  File "asyncio/core.py", line 317, in run
  File "asyncio/core.py", line 276, in run_until_complete
  File "asyncio/core.py", line 261, in run_until_complete
  File "code.py", line 527, in main
  File "adafruit_ov5640/__init__.py", line 1463, in saturation
AttributeError: 'OV5640' object has no attribute '_saturation'

If I first set the saturation before reading it back, I do not get an error...

cam.saturation = 0
print('Saturation: ',cam.saturation) # Allowed values: -4 to 5 inclusive

[relic-se]

The same applies for adafruit_ov5640.OV5640.effect. My temporary solution has been to wrap the property read into a try block.

try:
    value = cam.saturation
except AttributeError:
    value = 0
print('Saturation: ', value)