online since 1994 https://heikkisiltala.net/wiki/ 2026-04-03T21:24:41+00:00 https://heikkisiltala.net/wiki/ https://heikkisiltala.net/wiki/_media/wiki/logo.png text/html 2023-02-22T22:37:31+00:00 Anonymous (anonymous@undisclosed.example.com) https://heikkisiltala.net/wiki/en/photography/camera_stuff/canon_ec_s?rev=1677105451&do=diff Canon Ec-S Written in 2010. I switched the focusing screen of my Canon EOS 1D Mark III in order to make it easier to focus manually. I have used various manual focus lenses and all the help for that is welcome. The Canon Ec-S fosucing screen makes it a little easier to use manual focusing. The con is that it makes the viewfinder darker. Changing the screen was easy (clear instructions were provided) and currently keep Canon Ec-S screen on all the time instead of the standard screen. text/html 2023-02-22T22:37:31+00:00 Anonymous (anonymous@undisclosed.example.com) https://heikkisiltala.net/wiki/en/photography/camera_stuff/kenko_ef_extension_tubes?rev=1677105451&do=diff Kenko EF Extension Tubes Written in 2012. I have a set of Kenko extension tubes to be used with my EF/EOS lenses. These tubes do have EF electronics coupling so the camera will at least try to focus automatically. These same tubes are available under different brands.