XL+ said:
Sorry for the problem, Youtube has deleted the videos. I´ll upload them again.
They work great. Thank you very much for the videos!
The AF speed looks to be approximately the same as a A7RIII with various Canon telephoto lenses (or Sigma) adapted with the MC-11.
I clicked on all of them, but couldn't watch very much as the AF hunting is migraine inducing.
The AF kind of reminds me of 90's home camcorders =X
XL+ said:
As non was able to tell me, if it works, I got an nearly new A7RIII to test it before buying. And an Metabone V adapter.
My impressions on using it on the 600mm L ISII:
IQ is very very very good, really fine details even in the corners. AF: hmmmm... this was not satisfying. In bright condition, it worked about 1/2 to 1/4 the speed as the 5D IV. If it is cloudy, or light is not so brigt, or there is low contrast, the A7RIII was "hunting" to get sharp. When I put the 1.4 III extender in, the AF got much slower and in some cases, no sharpness was found. No chance to get BIF.
I tried the A7III for about an hour, and it really doesn't seem any different than the A7RIII, except that the PDAF area is much larger (not with the 600 though!). The large PDAF area is very much appreciated, but more for consistency of behavior than anything else, because really, how often do you want an AF points close to the edges?
With adapted lenses, both seem, as you put it, not satisfying; I mean, if you have a kit >> $5k, you want it to, well, work better than that.
XL+ said:
Could not repeat the last days fastness of the lens. On the A7III the 600mm and the 100-400mm II were sloooooow. Very slow and as longer I used them, the more unsharp pictures I got. Battery was still 60%, so I do not know what happened. AF in video is faster (4k)
For still photos, you may want to consider toying with:
- Reduce the subject tracking lock (whatever they call it) to the minimum value - this seems to speed it up some... even when you're in an AF mode that theoretically doesn't have subject tracking, like single point.
- Make sure AFC, not AFS
- It is critical to set the right range limiter on the lens (like 3m - infinity, etc.)
- Make sure Metabones is in basic (not advanced) mode
- Try a Sigma MC-11; it worked better for me in almost every lens I tried (like, 8+ Canon and 3 sigma).
I found that a frustrating aspect of the Sony AF system is that it behaves differently depending on whether it's in PDAF or CDAF, and you're forced to kind of use both because the featureset for one is different than the other.
Personally, I think that adapted lenses is a waste of time for anything other super-light usage or mostly-manual-focus applications.