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Re the 106ED (and the 85ED), I found that the colour DOES need more bosting than the N fluorites, but in PI it's a simple job.
Optically, the blue halation endemic in the N is practically gone, and I also feel the red/orange vibrancy is better. Sharpness of the ED's seems quite a lot better, as is the ability to use the reducer etc, making it an f/3 beast (you cannot use the reducer on the N).
Only thing I really dislike of the ED over the N is the weight/heft and the OTA size - they should have kept it at 114, but I am sure they had some specific reason (baffling, throttling/vignette or somesuch)
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