12-17-2015, 10:34 PM
Quote:Your denial is quite baffling.You are spreading FUD. Have I said anything outrageous about mirrorless or contrast detect AF? No. I simply state the facts: that it is easily possible with a modern DSLR to get good AF accuracy results. Not with a defective lens, of course, or a lens with e very crappy AF implementation.
Roger Cicala at lensrentals.com is probably the person who has the most objective and extensive testing experience in the industry. That's what they do for a living: testing body + lenses combinations in controlled environments.
Anyone wanting real hard fact about AF accuracy must read this article: Autofocus Reality Part 1: Center-Point, Single-Shot Accuracy
Here is what he says about AF microadjustments with fast lenses: The conclusion is pretty obvious: If you want to shoot wide aperture prime lenses and you don't want to use microfocus adjustment, you just refuse to cope with reality.
And here is the conclusion of the article:
Now, who is spreading FUD?
- LiveView (contrast-detection) AF on a still target is more accurate than phase-detection AF. It should be so. Contrast detection is using the actual sensor to determine focus; phase detection is not. Overall we found about one shot in 10 was out of focus with phase detection.
- LiveView AF is as accurate as Roger View MF. You may be better than this, or you may not.
- Phase-detection AF has more shot-to-shot variation than contrast detection. It's not huge, but it's real. This shouldn't surprise anyone. Phase detection was developed for fast AF speed and to detect subject movement. It wasn't developed to be more accurate.
- Microfocus adjustment pulls good phase-detection AF results up to a par with LiveView, but it doesn't eliminate the small amount of shot-to-shot variation that phase-detection AF has.
Why is it so difficult for you to admit that AF on a mirrorless camera is more reliable than AF on a DSLR?
Why are you disregarding people's experiences with the 5D mk III, 1D-X for example, and Foto Magazin's well done test? Because it does not suit your story.