At age 42 (in 3 weeks), I've been wearing glasses for 30 years. Finally, with the pair that arrived new to my face earlier this week I'm using bifocal lenses. (Yep, it's true, you hit 40 and things start falling apart.) Not for any particular reason, I went with a progressive bifocal lens. Yes, I'm only on day #4 of living with them, and I will "give them time...", but in the short time I've had them I can't say I'd do them again. The best way for me to describe them is that there is a sweet spot on the lens for each type of viewing, and I have to find that sweet spot by moving my head no matter where I need to look. It seems that peripherally, I can't help but wonder why they even bothered polishing the lens- nothing but minor distortion until I turn my head far enough to find the sweet spot. I'm giving them another week or so before I head back to the optical shop (not a quicky chain shop, either) and tell them to try again, likely with a standard lined bifocal. But, if I find that the progressives start working for me, what can I expect for manual focusing performance with the DSLR camera? What if I'm focusing manually on something in a macro fashion and I'm not looking through the right sweet spot of my glasses lens and I end up focusing on the wrong detail? I'll only know this once I download to the computer. Yeah, there's the focus assist light in the viewfinder (I only use the center focus point), but macro typically demands manual focus and if auto focus was so accurate then I'd use it and the corresponding focus point. I mention macro as my example because if I'm going to focus manually, this is usually when I'm doing it. Has anyone that went with progressive lenses gone away from them after finding problems focusing your camera? If so, did you go to standard (lined) bifocals? Any other thoughts or ideas- good, bad, or indifferent? Thanks much for your help with my newly aging eyes.