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Hi, thank you for sharing this fantastic code! I've been playing around the lens parameters in main.py. I noticed that the original code used an F/16 lens. However, when applied an F/4 lens, I observed a defocused PSF. Have you encountered a similar issue? Is paraxial approximation applied in the code? Or do you know how to fix this issue? Thanks a lot!

Traceback (most recent call last):
File "D:\pycharm\paper\ASASM-publish\ASASM-publish\main.py", line 77, in
prop2 = LeastSamplingASM(Uin, x, y, z, device)
File "D:\pycharm\paper\ASASM-publish\ASASM-publish\LSASM.py", line 109, in init
if any(1 - (wavelength * fxmax)**2 - (wavelength * fymax) ** 2 <= 0):
File "D:\anaconda\envs\pytorchcuda\lib\site-packages\torch_tensor.py", line 723, in iter
raise TypeError('iteration over a 0-d tensor')
TypeError: iteration over a 0-d tensor