Originally posted by peterh337 Just looked up the TW-282.
It appears to use the same 3-pole 2.5mm plug as the RF-602, so how can it do all those extra functions?
Surely, all it can do is operate the trigger, and the extra modes are simply set up on the camera itself, and then when you press the trigger, it just happens, no?
Why the RF-602 does not work for burst mode is bizzare, because it only needs to trigger the camera, no? Or does the camera shutter button have to be hold down for the duration of the whole burst?.
The remote shutter port has 3 contacts: ground, AF and shutter. Short ground and AF, and the camera will AF (as if you half-pressed the shutter button). Short ground and shutter, and the camera will take a photo (as if you fully pressed the shutter button). All the extra functions of the TW-282, or say the
JCC TM-C Multi-Function remote which I have, are due to the remotes themselves, which basically short the ground and shutter contacts in the remote shutter port at the specified time. Say you set the remote with a 15 second delay, and to fire 3 shots, with a 3 second delay between the shots. What happens is:
so at Time T0 - you press the remote, it internally counts down
At T+15 seconds - the remote shorts the ground and shutter contacts. (I'm not 100% sure, but it might actually short both the AF and shutter contacts to ground). A shot is taken. The remote internally starts a 3 second counter
T+18 seconds - the remote shorts the ground and shutter contacts. The 2nd shot is taken. The remote internally starts a 3 second counter
T+21 seconds - the remote shorts the ground and shutter contacts. The 3nd shot is taken.
All that, done with a 3-pole 2.5mm stereo plug.
Originally posted by peterh337 Why the RF-602 does not work for burst mode is bizzare, because it only needs to trigger the camera, no? Or does the camera shutter button have to be hold down for the duration of the whole burst?.
For the RF-602 to work in burst mode, you have to set the camera drive mode to continuous shooting. And then the camera should fire for as long as you press down on the TX button. Let go of the TX button, and the camera should stop. Burst mode with the RF-602 works 100% with my K10D, K-7 and K-5.
Note that the JCC remote I linked to earlier isn't listed as K-5 compatible, or K-7 compatible either, but works perfectly with both of these bodies. From my experience, if a device that plugs into the remote shutter port is listed as being compatible with the Canon 350D/400D/1000D/50D, or anything that uses the 2.5mm stereo plug, then it will be compatible with the K10D, K-7 or K-5.