# Physical Defocus - Problem with animated Far Defocus

**URL:** https://forum.logik.tv/t/physical-defocus-problem-with-animated-far-defocus/3384
**Category:** Flame Questions
**Tags:** batch
**Created:** [July 6, 2021, 12:09pm UTC](https://forum.logik.tv/t/physical-defocus-problem-with-animated-far-defocus/3384 "2021-07-06T12:09:38Z")
**Posts on this page:** 2
**Page:** 1

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### Author: ![ChrisKasten](https://sea2.discourse-cdn.com/flex020/user_avatar/forum.logik.tv/chriskasten/32/150_2.png) [@ChrisKasten](https://forum.logik.tv/u/ChrisKasten)
#### Post date: [July 6, 2021, 12:09pm UTC](https://forum.logik.tv/t/physical-defocus-problem-with-animated-far-defocus/3384/1 "2021-07-06T12:09:38Z")

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Hi folks,

anybody experiencing the same behaviour?  
When animating Far Defocus there’re some frames where the defocus doesn’t work.  
Bug or feature?

Flame 2021.2.2  
macOS

[https://us1.discourse-cdn.com/flex020/uploads/thedepartmentofexternalservices/original/2X/7/75e28284d52d2b99902a93798a062c2c83fb4b6d.mov](https://us1.discourse-cdn.com/flex020/uploads/thedepartmentofexternalservices/original/2X/7/75e28284d52d2b99902a93798a062c2c83fb4b6d.mov)

Cheers,  
Chris

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<div class="post-metadata">

### Author: ![DannyYoon](https://avatars.discourse-cdn.com/v4/letter/d/a3d4f5/32.png) [@DannyYoon](https://forum.logik.tv/u/DannyYoon)
#### Post date: [July 6, 2021, 8:19pm UTC](https://forum.logik.tv/t/physical-defocus-problem-with-animated-far-defocus/3384/2 "2021-07-06T20:19:52Z")

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Why is the far defocus animated?

Maybe keep the far defocus to the max you need it without keyframes. Also adjust your Distance to something longer.

As last resort…set batch to 32bit float…at least for this section and convert back 16bit for rest