Incorrect DoF Distance calculation #51151

New Issue

bouam sidi abderrahmane · 2017-04-07T20:10:49+02:00

2017-04-07 20:10:49 +02:00

System Information
Windows 8.1 X64, Intel HD 4600. CPU Rendering

Blender Version
Broken: 2.78c and 2.78.4 b16fd22
Short description of error

Exact steps for others to reproduce the error
1-Create a sphere.
2-Put camera exactly in the center
3- Set DoF distance the same as the sphere's radius.
4- add a cycles material with emissive checker texture to check the focus.

Expected:
Everything should be sharp because every vertex has the exact same distance from the center where the camera is located.
what happens:
Only the center is in focus.

DoF.blend

**System Information** Windows 8.1 X64, Intel HD 4600. CPU Rendering **Blender Version** Broken: 2.78c and 2.78.4 b16fd22 **Short description of error** **Exact steps for others to reproduce the error** 1-Create a sphere. 2-Put camera exactly in the center 3- Set DoF distance the same as the sphere's radius. 4- add a cycles material with emissive checker texture to check the focus. **Expected:** Everything should be sharp because every vertex has the exact same distance from the center where the camera is located. **what happens:** Only the center is in focus. ![DoF.jpg](https://archive.blender.org/developer/F538540/DoF.jpg) [DoF.blend](https://archive.blender.org/developer/F538542/DoF.blend)

bouam sidi abderrahmane commented

2017-04-07 20:10:49 +02:00

Changed status to: 'Open'

bouam sidi abderrahmane commented

2017-04-07 20:10:49 +02:00

Added subscriber: @AbdouBouam

Germano Cavalcante commented

2017-04-07 23:16:16 +02:00

Added subscriber: @mano-wii

Germano Cavalcante commented

2017-04-07 23:16:16 +02:00

Hi @AbdouBouam,

Could it be that the result is so because the focus is due to the depth of a plane (focal plane)?

Hi @AbdouBouam, Could it be that the result is so because the focus is due to the depth of a plane (focal plane)?

bouam sidi abderrahmane commented

2017-04-08 01:00:26 +02:00

Could it be that the result is so because the focus is due to the depth of a plane (focal plane)?

Yes, exactly, a plane is perfectly on focus.
So is this a normal behavior ? if yes, is this how real cameras work?

> Could it be that the result is so because the focus is due to the depth of a plane (focal plane)? Yes, exactly, a plane is perfectly on focus. So is this a normal behavior ? if yes, is this how real cameras work?

Aaron Carlisle commented

2017-04-11 00:42:19 +02:00

Added subscriber: @Blendify

Aaron Carlisle commented

2017-04-11 00:42:19 +02:00

Changed status from 'Open' to: 'Archived'

Aaron Carlisle closed this issue

2017-04-11 00:42:19 +02:00

Aaron Carlisle self-assigned this 2017-04-11 00:42:19 +02:00

Aaron Carlisle commented

2017-04-11 00:42:19 +02:00

This is correct, the depth defined is the distance to a plane particular to the camera. I would suggest looking up how a real camera works before reporting a bug.

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Incorrect DoF Distance calculation #51151