I am not a scope connoisseur only owning two decent models, an Athlon Helos BTR and an Aztec Emerald, both FFPs. The glass on these scopes is clear to my old eyes and the reticles very useable at the ranges I shoot at. I’ve use both for target shooting, plinking and pesting. Both have been used throughout their magnification range. Occasionally someone chimes in with words like color shift and chromatic aberration. Which means what, to recreational shooters? I’ve yet to see or notice either. But then again, I’ll admit to not knowing much about scope lenses. I would welcome examples of what these users are purporting to see. And through which scopes? When I’m concentrating on the crosshairs or the center dot on a target or critter. Where exactly do I look to notice chromatic aberration or color shift? Color shift I can somewhat understand, especially if hunting chameleons... but the latter?