3 Replies Latest reply: May 20, 2011 5:44 AM by Semaphoric RSS

    Telephoto lense effect?

    avpromedia Community Member

      I have a photo where the subjects is in the distance and there is a large expanse of foreground. Think of a door at the end of a long corridor. The door is the subject and the long corridor is the foreground.

       

      Is there a lense effect that allows you to define a rectangular region in the photo that will be scaled up, and the foreground will be non linearly compressed. The net effect is the photo would look like it was re-shot with a longer lense with the same framimg. IOW, the subject in the distance would be larger, and the large expanse of foreground would be compressed smaller.

        • 1. Re: Telephoto lense effect?
          Semaphoric Community Member

          Content-aware scaling with the rectangle protected, maybe?

          • 2. Re: Telephoto lense effect?
            Noel Carboni Community Member

            There's no one transform that's going to do this for you, but depending on your photo could you just make a mask that allows you to "see through" the door, then scale up a second copy of the image so that it's much larger (thus making the depth from the door to the subjects seem compressed, as a telephoto would).  Something like this could be repeated on several planes if the subject material warrants it.

             

            Content Aware Scaling is a neat idea, Semaphoric.  That would be fun to experiment with.

             

            -Noel

            • 3. Re: Telephoto lense effect?
              Semaphoric Community Member

              One thing you'd have to watch out for is, if the technique you use is dependant on the distance from the center of the image, any vertical subject might look like it was bent or leaning in some direction. You'd have to make sure that the whole subject ws scaled by the same factor as where it meets the ground plane.