Jump to content

Sony A7S: lock-on autofocus

dr.clocton
 Share

Recommended Posts

dr.clocton Newbie

dr.clocton

Posted
Posted

Hello,

 

I would like to ask if is it possible, to track an object using autofocus, while recording video on a7s?

I have canon 50mm 1.4 lens mounted via commlite adapter and can't figure out, how to do this... I even can't choose continous AF, because it says: it's not available with this lens... Strange. Is there any way around? Can sony lenses track a subject while recording video?

Link to post
Share on other sites
  • 2 weeks later...
George Explorer

George

Posted
Posted

I have the same question. I have a canon 24-105 f4 lens. I think when they say that autofocus is working while you have a lens from another brand, i think they mean that if u press the button for autofocus it will work. Well it does. It is veeeeeeery slow autofocus but it works. The only thing that will NOT work is continuous focus. I believe that this only works with Sony lenses.

Link to post
Share on other sites
  • 2 weeks later...
alastc Enthusiast

alastc

Posted
Posted

I think all the auto focus features apart from the basic are not available via adapter until the A7R2, that is one reason the new camera is a big deal.

 

It is the phase detection as part of the sensor that enables the features, otherwise it can only use contrast focusing.

Link to post
Share on other sites
RRRoger Contributor

RRRoger

Posted
Posted

Not with a Canon lens.

It will not keep up with action.

So, if you insist on using them, learn to focus manually.

 

Even native FE lens are slow with the A7s so it depends on what you are trying to track.

Shooting at higher f-stop can help (8-11) a lot.

Link to post
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now
 Share
Go to topic listing

  • Posts

    • NewSonyUsER
      Looking for an a7R mk I, (second generation)

      By NewSonyUsER · Posted

      I'd really like to find a package deal for an a7R (mk I, second generation) which includes the neckstrap and box. I've searched Ebay and currently no one is listing what I'm looking for. They either have the camera only or a first generation a7R and a lot of them don't offer the Sony neckstrap or box it came in. I know your site doesn't have a formal 'Equipment For Sale' thread and granted Ebay is a better place to sell gear but I thought I'd see if any of the members have one and would like to upgrade to a newer model but don't think anyone would be looking for one that old. The cameras I've been using are in the 20 megapixel range and rather than jumping to a 40mp camera due to file size, the 36mp that the first a7R has was appealing to me and wouldn't break the bank. I've been using Canon and Nikon but really want experience a Sony. If a post like this is undesirable for this website, I understand but I thought I would ask. Thank you. 
    • SonyFF32137
      Any A7R iv A issues with 200-600 zoom?

      By SonyFF32137 · Posted

      Here's a good thread on the issue.... https://www.dpreview.com/forums/thread/4571046 And here is the info on the A7RIVA that maybe explains why I don't see the issue...  The change in wording that caught my attention is that the new A7RIVA brochure says the structure has been "re-examined and redesigned." Don't know, but given the text of other parts of the brochures are copied word for word, the change in text here seems significant. My reading of this is that it is a redesign of the A7RIV. In that case, perhaps the 200-600 issues are less severe with the new body.
    • XKAES
      2 Primes or 1 Zoom?

      By XKAES · Posted

      I'd opt for a small zoom, but I must admit that there seems to be a dearth of lenses in the e-mount in the 24-50mm range -- for some reason.  I have a small 24-70mm, but that's an a-mount Tamron.  Maybe you can find something by looking at lenses slightly longer.  I have a heavy, but small 24-100mm a-mount, and Tokina made a 24-200mm a-mount.  Maybe there are similar lenses in the e-mount.  Kill three birds with one stone.

  • Topics

×
×
  • Create New...