This tutorial will allow you to apply the Lens Blur Filter of PhotoShop CS over a sample image using a Depth Map image provided. The main difference is that the 3D programs automatically calculate the Z-Depth Channel upon request and here the user must use subjective criteria to manually build the Depth Map. I recreated for the Depth Map the procedures used by some 3D modeling and rendering programs to calculate what they call Z-Depth Channel. I am not pretending that the method described below is all mine, neither that it is the best nor the easiest, just that I enjoyed creating the effect this way and it yielded an interesting result. Below are the links to the original image (resized), the alpha channel and the final image after applying The Lens Blur Filter:Ĭounterpoint_rpolitsr_OrigPictur_480.jpgĬounterpoint_rpolitsr_AlphaChann_480.jpgĬounterpoint_rpolitsr_gradualDOF_480.jpgĪfter the kind comments written by Bryan Bedell, BottomBracket, MegaTrixel and abat, I decided to post here a step by step description of the method that I used there, but using a photo that allows a clear description.Įarlier, in the hobby contest, abat posted upon my request an extra image of his beautiful scale model of the HM Bark Endeavour, this post is in retribution to his deference. In the contest thread I briefly described the method used to create it using the Lens Blur Filter and a Depth Map reference built on an Alpha Channel. To better fulfil the challenge requirements, I used PhotoShop CS to create the depth of field in my photo, shot with the Pro1. It began in the POTN G-Series Speed Challenge #32: Point – Counterpointhosted by Bryan Bedell. Depth Maps for Lens Blur Filter in PhotoShop CS
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