PDF (Adobe Acrobat) Documents
and other downloadable files on

Focus, Depth of Field
and other Photo Topics


Harold M. Merklinger

To view the following articles you will need to download the files and open them with Adobe Acrobat Reader (available free from the Adobe Web Site). The Acrobat 3 plug-in for Netscape (and some other Web Browsers) can also be used. We continue to recommend Acrobat Reader 2.1: if nothing else it's faster on both Mac and PC machines. This is especially important if one has an older, slower computer.

Note about QuickTime: In some ways older versions (version 2.5 is good) of the Apple QuickTime Movie Player are better for viewing these files than newer versions. The older versions let one set "play all frames" and "loop back and forth".

Patent Documents:

  • CARPNTR.pdf (218k) is a copy of Jules Carpentier's 1901 British Patent which is referenced in Scheimpflug's patent three years later. Carpentier's patent indicates that what we now call the "Scheimpflug Principle" was known before Scheimpflug's more complete work was published - in the UK, at least.

  • Here are a number of Portable Document Format files containing the text and illustrations from articles originally published in SHUTTERBUG    Magazine. These articles are not true reprints from Shutterbug. They contain essentially the same material but are based on the author's original submissions, and with a few errors corrected.

    From the LHSA Viewfider:

    From VIEW CAMERA magazine:

  • VCFaDOF2.pdf (273k) "View Camera Focus and Depth of Field - Part II" covers depth of field for View Cameras. Originally published in the September/October 1996 issue.
  • From Photo Techniques magazine:

  • SHSPAT.pdf (112k), "Scheimpflug's Patent", describes some of the information contained in Theodor Scheimpflug's 1904 British Patent. Originally published in the Nov/Dec 1996 issue.

    Copyright Notice

    The contents of the above HTML, portable document format and movie files (or printed versions thereof) are copyright Harold M. Merklinger of Halifax, Nova Scotia, Canada. With appropriate attribution, either to "Harold M. Merklinger" or to "http://fox.nstn.ca/~hmmerk/", personal or not-for-profit use may be made of these materials. That is, providing individuals or organizations acknowledge the source of the information and do not charge for its use or distribution, they may copy and use the materials provided. Without the express permission of the author, the material may not be used in or included with printed or formatted-for-computer records offered for sale. Individual photographers, professional or amateur, are free to make personal use of this information in their work. Information on how to contact the author is provided at How to get these books.

    Return to Merklinger's Photo Books: History of Additions.

    Return to HM Books Table of Contents.

    (20 Feb 2000 - End).