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Originally Posted by rmcpb
It would appear that these eyepieces are most useful in f6 and above scopes. Mine is a beauty in my f6 with about 90% of the FOV good. Not bad for the price  and we have to remember the price when comparing these beasts. |
Rob,
Mine does very well at F5. I know several guys who own F5 scopes that are also very happy with them. I think the problem is they are not all created equal.
CS-John B