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I was searching with google about where I can buy this cable until I got some page that show me how easy to build a cable switch by your self. I forgot where the pages are (my very thanks to the people who start tweaking their cable switch F)
But you can find easily with google. I think you can find some information on these pages
http://www.hobbymaker.narod.ru/English/Articles/cable_sw_eng.htm
http://www.digicaminfo.btinternet.co.uk/fswitch.htm
http://www.kajko.wdb.pl/wezyk/e_wezyk.html
The parts you need to prepare :
- two “push on” button switch but not latching, (for metering and shutter switch)
- one “push on” switch, latching type (for Bulb), latching means it keep ON in one position, you need to click to the other position to set it OFF – this switch is replacing the locking mechanism in the cable switch F/CS-205
- one analog audio cable, SOUND CARD cable to your CD/DVD drive (should be easy to find)
- if you want to build a cable switch for *ist D/DS (or a CS-205 cable), try to get a stereo adapter 2.5mm type (usually use for phone cell headset. At least my nokia phone use it, just cut the headset and buy another one J). It is smaller compare to standard stereo adapter in your MP3/CD player (3.5mm type).
- Film plastic tank, as you got when you buy a film. You can use other type of tube/box to suit your hand.
This is the picture of mine and the schematic :
Take the audio cable, usually it has 4 holes with 4 sockets (connector) but some have 3 sockets (the ground is only one) and it’s not in one row. You just need 3 sockets actually, so with your nail/knife take the inner socket to be 3 in the same row. Cut the other plastic that is not in use carefully, now you have the connector to connect to the camera, the same as in the picture above.
Cut the other end of the cable. Make 4 holes in the film tank, one in the bottom for the cable, 2 in the middle part for the push button, and one in the cap for the switch. Put all hole in the nice arrangement fits to your hand (if you have extra big hand, you can use other plastic box. Mine are the simplest thing I can found). Put the cable in, pull a little bit longer, tied once so in will not loose easily from the tank, and solder the other end as shown in the schematic. The B and C switch is connected parallel, both have the same function, but the B switch is a latching one, so you can use it for a BULB switch. For normal one, use the C push button to trigger. 5 minutes work and you have a cable for night exposure.
For CS-205 Cable, use this picture below as your reference :
If you short Meter to Common, Metering & AF system will be activated
If you short Trigger to Common, camera will be triggered to take picture/s
So, just connect the Meter & Common to one push button switch (switch A in the first picture) and Trigger & Common to the other push button (and/or latching switch – switch B & C in the first picture). It is similar with a cable switch F, just differs in the connector.
Shorting Meter to Trigger will not activated anything in the camera. Shorting both Meter, Common & Trigger will activate Metering, AF and the trigger. (Some modes in the camera will try to focus first before trigger the exposure)
My home made CS-205 Switch, without the “Bulb switch”. You can put additional latching switch for the Bulb
2.5mm stereo connector is the bottom one, the top one is 3.5mm connector (CD player, etc)
HOW TO OPERATE :
The original cable switch F is just the same circuit with only one switch (but inside there are 2 contacts, one for metering and the other one for triggering + a locking mechanism to hold them connected to the common line).
So to operate your home build cable switch, just press the Metering switch (AF will work if activated in the camera) and then press the Shutter switch if the metering & focus is fix. You can push one switch at a time, no problem. Event if you press directly the Shutter switch, the camera will take the picture (in case you set the AF of the camera to Continuous/Servo AF or Manual Focus).
To do Bulb exposure, you need to turn ON the Bulb switch which hold the shutter until you turn it OFF.
Have fun, mail me if you have problem. Sorry for the wrong spelling/grammar
BK
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..MX is Beauty, KX is Reliability..
..DS ??? Cool !!!
I used a black tap to cover the connecting point on the "copper button" and stick the copper section to the switch.
