I have an odd one out lense that strangely the individual facets are convex instead of concave like all the others. We have the original concave lense (pre-2020), and this one lense is the only one that has the facets indenting in a different direction. The curve of the entire lense is still concave, just the individual facets are convex.
Does anyone know why this one would be different, and does it effect the photometry?