6D AF behaviour
Today I had to wait for some minutes, and I was chimping around with my 6D and the 24-70mm f2.8 lens. I own it for a few months now and I am quite satisfied so far. Technically I consider myself to be quite experienced, so I am well aware of what an horizontal and vertical AF sensor point is.
Please look at the following picture. It shows plain cupboard locks and handles. I was about 2m away, at 70mm.
There was absolutely no way my 6D could acquire focus with the scene above and all 11 focus points set to auto. Instead it was constantly focusing back and forth very fast in the macro-range(!) of the 24-70mm lens, the image in the viewfinder was completely blurry at all times. Funny thing is, when I switched to single AF field (center, as in the image above) the camera instantly acquired focus lock. I also checked other single af points, which seemed to work correctly, depending on their alignment (horiz/vert).
Any explanations/suggestions for this behaviour? I know that this is not a very scientific test, and I'm not a big fan of test charts and the like. But this confused me.
- Canon EOS M58.8%
- Panasonic G85/G803.3%
- Panasonic FZ2500/FZ20001.9%
- Panasonic LX10/LX151.2%
- Panasonic GH5 development3.6%
- Sony a99 II15.9%
- Nikon KeyMission 170 and 801.0%
- Fujifilm GFX 50S development28.3%
- Olympus E-M1 II development18.7%
- Olympus E-PL80.1%
- Olympus 25mm F1.2 Pro1.5%
- Olympus 12-100mm F4 IS Pro1.9%
- Olympus 30mm F3.5 Macro0.1%
- Sigma 85mm F1.4 Art3.6%
- Sigma 12-24mm F4 Art2.6%
- Sigma 500mm F4 DG OS HSM Sport2.4%
- YI M12.2%
- GoPro Hero50.8%
- GoPro Karma drone2.2%
|Sadiqur_Rahman by Sadiqur Rahman|
from Ain't Going to Work on Maggie's Farm no More
|Airborne by John Beavin|
from - How to respect the Flag and Anthem - (Portrait in Full Colours + A Border)