Quote:
Originally Posted by gregbradley
I don't think there is such a thing as a reducer/flattener. That's some false marketing hype. Its one or the other.
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Astro-Physics documentation for their general purpose reducers says: "Finally, the 27TVPH and CCDT67 do not add any field curvature. In fact, they have a little bit of a flattening effect."
In this case I'm inclined to trust Roland though that doesn't necessarily translate to non A-P reducers.
Cheers,
Rick.