#7. "RE: Ready to Left Focus Test my Newer Batch D800e" In response to In response to 6
I'm thinking the traditional advice is still pertinent - if you don't see a problem PATTERN, then no need to scurry into focus tuning.
I went probably 6 weeks without tuning, but felt a bit naked about it, so have now tuned and am keeping a critical eye open. I recently added the focus-tune software into my tuning regime. I think though there is growing recognition that there is variability in PDAF results. That's why I say keep and eye out for a consistent pattern, not just an outlier result,