I celebrated my connection to broadband last week after a six month wait. This has meant I can return to my Blog . This was difficult to keep up to date using "dial - up". My service supplier Westnet lived up to its reputation for supplying excellent customer service. It is good to be back.

Macro Merging Photos

My friend in the Photo Club referred me to a freeware program that enables the photographer to take macro photographs that focus on particular parts of the subject that you want to appear in focus in the final product. Usually a macro photo places some parts in focus while leaving other key parts slightly out of focus. The software combines all the images taken and seamlessly connects them together to produce a superior end result. I am about to put this to the test.
When looking for the web site I also found this important information relating to Z.
The software is called "CombineZ"http://www.outbackphoto.com/workflow/wf_72/essay.html

23.1.3 Perspective z-Coordinate Transformations

The z value in eye coordinates, z_eye, can be computed from the window coordinate z value, z_window, using the near and far plane values, near and far, from the glFrustum() command and the viewport near and far values, far_vp and near_vp, from the glDepthRange() command using the equation:

The z window coordinate is computed from the eye coordinate z using the equation:

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