p.1 #1 · Roger posted "Autofocus Reality" Part 3B. The final saga!
Roger Cicala of LensRentals, posted the final chapter 3B on his "Autofocus Reality" series.
In previous articles, he concluded:
1. Phase-detection autofocus (even using still targets and center-point only) wasn’t nearly as accurate as contrast detection.
2. The contrast-detection autofocus was about as accurate as the most careful manual focusing.
3. A few newer lenses did focus as accurately as contrast detection on 5D Mark III cameras but not on 5D Mark II cameras.
4. the newest Canon lenses (40mm f/2.8, 24mm f/2.8 IS, 28mm f/2.8 IS, 70-300mm L IS and 300mm f/2.8 IS II) focus more accurately when mounted to 5D Mark III camera but not on 5D Mark II cameras.
Here is an excerpt from this the latest Autofocus Reality Part 3B:
"Since we knew that the newest lenses autofocused accurately on 5DIII but not on 5DII cameras, the next step was obviously to compare an accurate AF lens on different camera bodies to see with which ones it was capable of accuracy."
p.1 #3 · Roger posted "Autofocus Reality" Part 3B. The final saga!
Thanks for posting the articles Fred, must reads indeed. Guess I'll struggle with me old gears for awhile...at least until someone produces a list of lenses that have rotation detectors built into them
p.1 #4 · Roger posted "Autofocus Reality" Part 3B. The final saga!
wow, amazing read to quantify what some others have expressed. many thanks for posting the articles & to Roger for taking the time to get to the bottom of everything!
p.1 #8 · Roger posted "Autofocus Reality" Part 3B. The final saga!
Thanks for posting this. I wonder if the increased precision of new lenses + new body is limited to those lens with f2.8 or faster maximum aperture? In other words, would say the new 500L or 600L have the same advantages?
p.1 #11 · Roger posted "Autofocus Reality" Part 3B. The final saga!
".... the newest Canon lenses (40mm f/2.8, 24mm f/2.8 IS, 28mm f/2.8 IS, 70-300mm L IS and 300mm f/2.8 IS II) focus more accurately when mounted to 5D Mark III camera but not on 5D Mark II cameras"
Hmm
Does that mean that my existing L lenses will also focus more accurately on a 5D3 and subsequent bodies? I have a 24L Mk2, 135L, 24-105 and non IS 70-200 f4. I really don't want to upgrade these lenses, I expect them to be reasonably future proof? Should I be concerned?
p.1 #12 · Roger posted "Autofocus Reality" Part 3B. The final saga!
Thanks for the linky, Fred, and a BIG thanks to Roger for this series of articles & the countless hours it must take to setup and do this testing work!!!
