E-mount lens AF speed on Sony A6000

Discussion in 'Sony Alpha E-Mount Lenses' started by tbyork2014, Jun 21, 2014.

  1. tbyork2014

    tbyork2014 TalkEmount Regular

    84
    Jan 11, 2014
    Hi,
    I read somewhere that the SEL50f18 was one of the slower lenses to AF on the A6000, even with the latest firmware. To test that theory, I used AF-S and center point to focus on two different subjects (indoors during daytime with reasonable lighting about ISO 400 1/60 f4). I compared it to my 24-70/4 at about 50mm, as well as against the 70-200/4 at 70mm. What I found was that the 50/1.8 was definitely slower than the 24-70/4 and 70-200/4 with single point AF and AF-S (at f1.8 and f4 on 50/1.8 and f4 for the other two lenses), and I could see the lens still needing to adjust a few times to get to focus, whereas the new lenses just went straight to the focus.

    Do note that the 50/1.8 focus on A6000 is definitely much better than on the earlier Nex cameras which were significantly slower. And I am thinking that maybe the slower AF with this lens can explain why my hit rates with the 50/1.8 lens when shooting pictures of my puppy outdoors in good light in AF-C had many frames which were not in focus (despite using auto ISO at 1/1000 s shutter speed to 'freeze motion'). Perhaps the choice of lens when shooting AF-C on A6000 is also very important in getting better hit rates. I only have these 3 E-mount lenses, so can't comment on others.

    The other interesting thing is that I also compared AF-S with the 24-70/4 & 70-200/4 A6000 vs A7R and did not feel there was that much difference in AF speed between them with instant movement to the sharpest focus; definitely not to the same level of lag as experienced when comparing these newer lenses against the 50/1.8 on the A6000. I wonder if the Zeiss 55/1.8 has faster AF speed than the 50/1.8? Anyone else noted the same experience with difference in AF speed between their E-mount lenses on the A6000? It would be good to share on which lenses we feel focuses fastest on the A6000.
    Boon
     
  2. tbyork2014

    tbyork2014 TalkEmount Regular

    84
    Jan 11, 2014
    Update: I have just taken delivery of a Sony 20mm f2.8 pancake lens and this also has pretty instant AF with the A6000.
    Boon