Is there a way to record with infinity focus on iPhone 7 ?

DBZmusicboy01

macrumors 6502a
Original poster
Sep 30, 2011
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346
like I want to take videos that can focus on everything at the same time without losing background detail. Like if I was focusing on a person I don't want the background to lose quality.
 

Newtons Apple

Suspended
Mar 12, 2014
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Jacksonville, Florida
Best you can do is take the image in very good lighting so the lens stops down to increase depth of field.

Many prefer the background out of focus to put all the emphasis on the person in the image. This is why Apple brought us the portrait mode.
 

Givmeabrek

macrumors 68040
Apr 20, 2009
3,378
1,046
NY
Difficult to do. The iPhone doesn't have a mechanical aperture. So stopping it down does not change Depth of Field. The wider aperture lets more light in, decreases the Depth of Field and gives the out of focus background. DOF is related to distance to subject so stepping back from your subject may help in your case.
 

bkends35

macrumors 6502a
Feb 24, 2013
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USA
That will be very distracting... anyways, the aperture is fixed so you'll have to move your subject further away to increase your depth of field.
 

Newtons Apple

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Mar 12, 2014
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Jacksonville, Florida
That will be very distracting... anyways, the aperture is fixed so you'll have to move your subject further away to increase your depth of field.
Moving you subject farther away will not increase depth of field. If the aperture is fixed so is the DOF. I do agree that if the subject is closer to the background, both will be in apparent focus.

I learn every day.
 

bkends35

macrumors 6502a
Feb 24, 2013
935
377
USA
Moving you subject farther away will not increase depth of field. If the aperture is fixed so is the DOF. I do agree that if the subject is closer to the background, both will be in apparent focus.

I learn every day.
That is incorrect actually. Your focus distance is directly correlated to the depth of field. Aperture has nothing to do with since it is a constant.

http://www.dofmaster.com/dofjs.html

Play around with this^ only change the subject distance (focal distance) and watch your DOF change. (Camera (sensor size) doesn't matter as long as it's constant)
 

blueflame

macrumors 6502a
Apr 3, 2003
824
25
Studio City
there 3rd party recording apps in the app store that lock the focus field? so pic the target and lock it in, it will keep that focus.