I think the writer said coma is not the main problem, and did?acknowledge that there is some. But he wandered?between the?photographic and visual perspective, with not a lot of warning. The eye is much more forgiving.
I agree with you, coma is an issue photographically, which accept for the small chips, would be immediately apparent?doing a?with/without CC comparison.?A either the Baader MPCC or TeleVue's Paracor made my native f6.3 SCT usable over 2/3 of a full frame DSLR, instead of less than 1/2
