show us a full screenshot of your Ae interface so we can see what's going on
How do I post a screenshot from my Android device on this discussion?, I have the images of the A.e. interface but this is my first time using a forum and I don't see an Icon that let's me attach a file or screenshot from my gallery.
Maybe I'm missing something and it is really difficult to help you without a screenshot of your interface. Anyway, the first thing to get DOF effect is to have a 3D Camera in your composition with the Depth of Field Option enabled. Once you do this, the nest step is to use the parameter Aperture in the camera settings to get DOF.
I was actually able to insert the screenshots of the A.E. Interface from my laptop instead of my phone i just need an internet connection cause at the moment earlier i didn't have one, I did like you said and enabled DOF but the only thing i don't know is how to mess with the parameter aperture settings to get DOF, how do i use that?, but also here's the images hopefully this helps out.
It is a bit technical to explain how the DOF work. Basically, you need to let the light to pass through the camera, so with a higher value in Aperture you will get more blur, but you need to set up Zoom and Focus Distance. In these two parameters have the same value, you will never get DOF. Try to move Focus Distance to activate DOF. But also, you need to have your layers with some variation in Z Space. If all your layers are located in the same Z Value and, they will be on focus except if you move your camera.
This is something that is not related to GPU or CPU
A couple of additional suggestions:
In your camera settings:
1. Reduce your f stop value. It's currently 5.6 - try 1.4 or lower.
2. Increase your blur level past 100% - try 1000%
I adjusted the zoom, focus and aperture parameters like you said. everything else work fine when i create the camera and use the unified camera tool to rotate my templates around in the DOF, but when i try to move my second/duplicated template with some variations in Z-Space behind my first template it doesn't move behind it still to create that 3D look, instead they stay stuck together like they are one single layer. I've been watching a tutorial video on YouTube to the "T" on how to create the project i'm working on and the layer still doesn't move back in Z-Space. But when i create a different Composition and make a Text layer and duplicate everything to test out if it works the same way as the other project it actually works and i see the second template layer in the back of Z-Space the way it should be.
Thank you for the extra suggestions Mike, i did give it a shot with everything else i was suggested but still nothing unfortunately , I'm going to keep trying to see if i missed some things. If not i might just scrap the whole project and start over again and get back to you guys. I did respond back to to Jose Panadero's reply if you want to read that and see if you have any other suggestions that might help in this case still. it would be much appreciated.
If you have the Collapse Transformations option turned on for your duplicated comp, it will pull the 3d values form the layers inside rather than taking the new value.
IF that's not it, the answer is likely that there is a 2d layer somewhere in your layer stack. 2d layers will break the rendering order of 3d layers. You will need to move that 2d layer out from between the 3d layers.
Did you ever get your depth of field issue working? If so, let us know how you pulled it off.