Here is my newer own tinkering on photo equipment:
- Carl Zeiss Contax 18mm/4 optimized for Canon EOS, 09.April 2012
- Zeiss-Jena-35mm-Macro-Focus-Stacking lens, 08 April, 2012
- Nikon Nikkor EL 50mm/2.8 Fugus cleaning, 19. Frebruary 2012
- Som Berthiot 75mm/1.8 projection lens converted to EF mount, 19.10.2011
- Canon New FD 24mm/1.4L mount conversion to EF mount, 11. October, 2011
- Apodizationfilter, seems to be first feasible How-To for tinkerers, 02. September 2011
- Canon EOS 1000D / Rebel XS / EOS Kiss F SD card slot repair, 25. June 2011
- Meyer Görlitz Trioplan 100mm/2.8 short review, 24. May 2011
- Vivitar 135mm/2.8 Close Focussing conversion to EF Mount
- Canon EF extension tubes vignetting optimization, 03. April 2011
- Novoflex Noflexar 60mm/4 (German) Fungus and rust cleaning, 02. April 2011
- Monostat monopod repair, (German) 01. April 2011
- 8 mm thick (or thin) manual extension tube with EF-mount, 20. March 2011
- Optimizing EOS 350D / Rebel XT flash housing (German), 17. March 2011
- Cullmann Magic 2 tripod wobbeling repair (German), 17. March 2011
- Compendium for Cokin-P filterholder (German), 17. March 2011
- Samyang 14mm f/2.8 new method of focus scale adjustment, 14. March 2011
- Mount Conversion of the Canon nFD 85mm/1.2L to EF mount (German), seems to be the first full reversible conversion for that lens, 27. January. 2011
- Mount Conversion of Canon New FD 400mm f/2.8 L to EF mount (German), seems to be the first description for that lens, 17. January 2011
- Mount conversion on Canon New FD 500mm f/4.5 L to Canon EF - seems to be the first How To on the web, 12. October 2010
- FD Mount to EF Mount with FD 100 mm f/4.0 macro, (German) seems new to the web, 11. April 2010
- EF Mount for Canon nFD 300 mm f/2.8 L - seems first description of iris coupling of these longer FD mounts, 28. March 2010
- Minolta Rokkor 35/1.8 conversion to Canon EF (German), seems to be new, 24.January 2010
- Fungus cleaning of an Rodenstock Apo Rodagon 50/2.8 (German), 23. January 2010
- Minolta Rokkor 58mm f/1.2 conversion to EF mount, old stuff, 08. January 2010
- Fungus Cleaning example on Vivitar 24mm/2.8 (German), 27. October 2009
- Fungus basics (German page), some thoughts, images and links to this problem, 18.October 2009
- A tilt and shift lens for crop DSLR cameras that could be used for long exposures, out of Canon FD lenses and the housing of an tilt lamp, the later is my innovation - 03.March 2009
- A DSLR with exchangable filter inside - for work with different IR-pass or blocking filters, grey filters.., invention published 14. May 2009