I am not sure you can get the narrow FOV parts with evaluation boards like the Adafruit or DFRobot ones but they are available as discrete parts that you could use if you have soldering skills. Unless they are surface mounted on the evaluation boards, I am quite certain that one could replace the standard part with the narrow FOV one fairly easily.

If you are interested/curious, you can look at the Melexis datasheet for the MLX90614, www.melexis.com/en/documents/documentati...s/datasheet-mlx90614 .

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