I like the Radians, some do, some don't. There is a slight off color at the edge or on a very bright object like the full Moon when looking at the limb.
Konig EPs are fine at f/8-f/10 but ar f/5 they are not too great at the edge, so FOV suffers as far as useful FOV is concerned.
The Radian is sharp over the entire FOV.
The 12mm Nagler T-4 is another fine EP. Wide field at 82° and very nicely corrected, but it too uses the Insta-Adjust, which I happen to like.
But some people just don't like using the Insta-Adjust. Why? I just don't know.
Konig EPs are fine at f/8-f/10 but ar f/5 they are not too great at the edge, so FOV suffers as far as useful FOV is concerned.
The Radian is sharp over the entire FOV.
The 12mm Nagler T-4 is another fine EP. Wide field at 82° and very nicely corrected, but it too uses the Insta-Adjust, which I happen to like.
But some people just don't like using the Insta-Adjust. Why? I just don't know.
[SIZE="Large"][/SIZE][COLOR="Blue"][/COLOR] Floyd Blue
Amateur Imager
