I'm no optics expert by any stretch of the imagination. I don't even know what chromatic aberration is. I only know what I see through my own eyes. I wound up buying a slightly used pair of Tract Torics in 8x42 off of archerytalk for a good price. Optically, TO ME, these are the best binos I have ever owned, and I had some Swaro 8x42 SLC's a couple of years ago, which I wound up trading. Again, TO ME, these were better in my eyes than the Swaros, especially in low light situations. The only complaint I have, and it is minor, is that the twist up eyecups, don't really lock in very well in the intermediate positions. I like them in what I consider position 3, and too often when I pick them up to look through them, one of the eyecups is out of position, and has to be readjusted. If there is a fix for that, these would be the perfect hunting binos, for these 63 year old eyes. That's my unprofessional take on the Tract Torics.