Is there a tendency that the performance of LX2 vary?

As a characteristic of LX2-257AG, is there a characteristic that the variation of distance appears on the + side (long distance side)?
When the distance is 1500 mm or more, the variation on the + side will occur, and when the distance is 1500 mm or less, the variation occurs on the - side.

Since the variation varies depending on the product, it is difficult to judge whether the variation in distance is a characteristic that appears on the + side. There is no problem considering that the above variation is an individual difference.

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