after purchasing you are granted by klaus petritsch (the copyright owner) a nonexclusive, nontransferable license to use, reproduce, modify, publish, display, and distribute the content in accordance with the following statements. you may use the photos (even without showing my copyright):

• for power point presentations, grant applications, patents, documentation, phd/master/diploma or related thesises, lectures
• articles in daily magazines & newspapers, student newspapers
• as design elements on private or company websites, website templates, videos, video games, television broadcasts, daily magazines&newspapers, book covers, interiors of books, posters, calendars, postcards, mouse pads, screensavers
• as decor in an office, lobby, or public area, restaurant, or retail store
• as part of marketing, advertising, or promotional materials, including print ads, mailers, handouts, and packaging
• in connection with your business or entity, eg corporate identity documents, and letterhead

please contact me should you consider another use not mentioned here.
you may not use the photos (or parts of them) for:

• re-selling, distributing or sublicensing the photos except as specifically authorized above
• publication in weekly, monthly or quarterly magazines (please contact me for special licence)
• under any circumstances, use them in connection with any pornographic, obscene, immoral, or illegal materials.

in no event will klaus petritsch be liable for any direct, indirect, special, incidental, economic or consequental damages arising out of the use or inability to use any associated products or decisions based on the klaus petritsch' photographs or other information provided on his website www.solarpassion.com

upon purchase you will receive a link to the licence terms as of date of your purchase.