I have quite a few Zeiss scopes, all in the 3-12x56 range bar 2 in the 6-24x56 range. The Victories in the 3-12x56 are not Parallax Adjustable but I have had no problem shooting from dawn until dusk and at distance. The glass is crystal clear for my eyes and they are better than my S&B PM11 5-25x56. I also have a 3-12x56 *T that was made in the 90s which is still perfect and used to good effect. I have no doubt they will last a lifetime. For the last two years, I have been using 3-12x56 Diarange on a .308: knowing your range to the meter allows for clinical shot placement.