Topics

Optical stabilisation issues?

 

Hi all.

I have been messing about with my A7s on a Zhiyun Crane with my new 24 - 105 which has optical stabilisation and I am amazed how much of a difference it makes.  AF is still a bit hit and miss though.

Watching this clip back i noticed a weird artefacts on the van on the right hand side of frame.  My initial thought is it’s the stabilisation working against the crane.

Would really appreciate anyone’s thoughts..  


(Also my son wants me to mention he looks a bit zombie like as he is in the middle of exams!).



Michael

Michael J Sanders: Director of Photography 
  

Mobile: +44 (0) 7976 269818   
Linkline Diary: +44 (0)20 8426 2200

Mako Koiwai
 

The Sony A7S has poor, old fashion Contrast Detection AF. Back then you should have gone with the A7R for it’s Phase Detection AF. NOW you would go with the A7 mk3 or A7R mk2. Phase Detection makes a huge difference! It’s much more responsive, fast and decisive.

Makofoto, S. Pasadena, Ca

 

Thanks Mako.

I bought the camera primarily for video use so did not really think about AF performance.  Over time I have been converted and now use it as my stills camera as well (actually sold my 5D a few months ago) and it’s only since I got the Sony 24 to 105 that I’ve started properly playing with AF with video as I previously had EF zooms and a Metabones on it.

So far the stills I have shot with AF have been spot on but I have not tried it at night yet.

Would like an A7 or an R...

Michael

Michael J Sanders: Director of Photography 
  

Mobile: +44 (0) 7976 269818   
Linkline Diary: +44 (0)20 8426 2200

On 4 Jun 2018, at 16:51, Mako Koiwai <mako1foto@...> wrote:

The Sony A7S has poor, old fashion Contrast Detection AF. Back then you should have gone with the A7R for it’s Phase Detection AF. NOW you would go with the A7 mk3 or A7R mk2. Phase Detection makes a huge difference! It’s much more responsive, fast and decisive.

Makofoto, S. Pasadena, Ca

 

Fernando,

I was just trying to work out what it could be and thought one might be compensating for the other - and getting it wrong.  

I now think its more of a resolution issue as its just that bit of the picture that seems affected as the van gets smaller in frame.

Thanks.

Michael Sanders
London Based DP.

+ 44 (0) 7976 269818




On 4 Jun 2018, at 19:05, Fernando Alves <alves.fernandobr@...> wrote:

Why do you think "stabilisation working against the crane"? For me, stabilisation itself works fine.