Jump to content

Help on A7ii Video AF


Recommended Posts

Hi,
I just recently bought an A7ii (switched from a dslr). I have set my focus mode on AF-C but I'm having trouble on figuring out how to change the AF Point/area while on video mode: it is always fixed on the center. What if my subject is on the left/right of the frame (which is 80% of the time).

I tried setting the Focus Area on "Flexible Spot" and the Focus point on either sides but it continues to focus just on the center ignoring my AF area settings. I tried pushing down the focus button (Shutter half press or back focus) which actually makes the camera to focus on my chosen focus point but it just locks on it like it's on AF-S and as soon as I release it, the camera returns on focusing on the center.

In other words I would simply like to fix my focus area (while on AF-C) on either the left or right of the frame.

Can anybody please help me.

Thank you!

P.S. I'ts my first Sony camera so please be patient with me ^_^

Edited by Alter Prospective
Link to post
Share on other sites

  • 5 months later...

What you want to do is called spot focus. Which is where you can move the location of the focus point.

or

Use center focus and then move to the location of object you want to focus on and hold the lock focus button ( the big black button on your camera or the buttons located on your lens body ( if it has ). Sometimes the camera disables the camera lock-focus button.

Another mode is focus tracking. Which tracks the moving object without you moving or locking the camera focus. However few lens support this feature.

AF continues is not meant for video and will not give you that Canon ( mufti-focus affect* ).

* Canon has a system where you could focus on two planes at the same time and give you a shot similar to focus infinity. JPEG mode only I believe.

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

  • Posts

    • Hi, Last year I switched from Nikon to Sony (A7Cm2) and this situation surprised me in an unpleasant way. When I travel, I record rather short 8-30 seconds clips, a lot of such clips. And found that these files are rather big because of rounded up to the nearest ~32MB. Different SD cards (64GB) fill up very quickly because of that behavior. Sample sizes for different durations of those clips, for example I have 700 clips with these "distinctive" sizes +/-, nothing in between 33,592,255 67,149,921 100,706,705 134,367,160 167,821,451 201,378,823 234,936,491 268,594,590 302,050,059 335,709,042 ... and so on +/-1000 for the smaller files up to +/-100,000 for the bigger ones rounded up to the nearest ~32MB  Different 64GB cards were formatted inside the camera with exFAT (allocation unit size is 128KB) Why is that? Is there some setting for that?  -- Piotr
    • In short: AF micro adjustment isn't needed in mirrorless cameras, so the option is irrelevant. In DSLRs, the focus module is in a different light path than the photosensitive plane. Minuscule differences in the lengths of these paths can be compensated for with AF Micro adjustment. In mirrorless cameras, the photosensitive plane also contains the focus points. So whenever the camera detects proper focus acquisition, the focus is also exactly on the photosensitive plane. That is, until you use an LA-EA4 adapter to mount your 500mm f/4 onto your A1, which uses its own AF module instead of the cameras AF system. I would strongly advise against going this route: you'll have a state of the art camera with an insanely good AF system, and then you dismiss it 'in favour of' a very dated and compromised AF mechanism. Better try the LA-EA5 if you really want to keep using your old lens.   Edit: apparently autofocus doesn't even work with the LA-EA4 on the A1. https://support.d-imaging.sony.co.jp/www/cscs/accessories/compatibility.php?area=gb&lang=en&mdl=ILCE-1&cat=7
    • Hi Everyone !! I intend to move to Sony A1 from Sony A99 ii. I plan to continue to use the Sony F4 500 G lens (A mount lens) with an adapter on the Sony A1. However, I cannot find the menu option to do the AF Micro Adj in the Sony A1.  In the Sony A99ii it was under the AF3 menu. 
  • Topics

×
×
  • Create New...