Recent content by SeedyBee

Source: Some Canon patents. The Master flash mounted on the camera is in an unlabelled fourth group. It is not "in" group A. It borrows the settings of group A when it is set to fire for the shot, as there is no human interface on the camera to make such settings for the Master. Firing groups...

One user on a different forum has been having problems with same gear and HSS, where it prevents fast shutter, as yet unsolved. http://www.dpreview.com/forums/post/57273751

Thanks - I was not aware that a locked-up C-TX could produce a failed identification in the camera.

It is not how Canon cameras are programmed to work. Especially if the camera tells you it cannot communicate with the mounted device. (A micro-switch in the shoe tells it "something" is there.

If when you try to see the external flash control menu on your 5DII is says "Not available" or something similar, then your C-TX is NOT properly mounted. Nothing else matters until this is fixed. Half-shutter makes the camera go through its ID and setup routines, at which stage, as it is UNABLE...

Agreed - but as a diagnostic step it revealed definitively that the camera was not recognising the C-TX. (And checking what is displayed can reveal other mis-settings.)

With Canon, HSS sync cannot be set if the camera thinks it does not have an HSS-capable device mounted in its hot-shoe. The data stream involved passes through the pin 4 of the Canon hot-shoe. Which is why a PC-Sync cable will not work - that conveys only the sync/Fire! signal.

So the 622C-TX is not mounted correctly. At least it is a simple, cheap fix.:)

This phrase "dialled in about 1/1000th to start off with but the camera keeps reverting to the max sync speed of 1/200th." shows that the camera thinks that it's HSS requirements are not being met. That could be due to something as simple as dirt/incomplete insertion of foot/poor clamping...

Which camera body? The camera controls the generation of HSS signals, not the triggers or how any remote devices are set. The quote you have is for non-Canon environments, where you are working on the fringes of design for the product. The YN622C-TX has no problem handling HSS, providing...

An UK friend accidentally (he said with a chortle) upgraded his YN622C-TX with a Nikon .dfu firmware file. It apparently completed ok, but the 622-TX would no longer function on a Canon! He quickly used the correct file, and he had a working upgraded C-TX back again. It's the pinout. what can...

You are right about the patents influencing what we get. I have a copy of the 2002 patent (lodged 1999), and it has explained several aspects that Canon doesn't discuss. There was a hint early on about 2CS with no remote control, and it is a logical explanation to their implementation. The...

Hoppy, I am certainly not trying to talk down the RT system. My solution was driven by pension restrictions and the possession of 622 components that the O/P had. In that environment my solution works well, but it is a work-around of a 622C-TX limitation as you say, and should be taken into...

They are not exactly new, being based on the earlier YN600EX-RT, and the evidence is that there has been a step up in quality. But yes, an extra YN685 and 622C-TX ARE prudent. It is much quicker to swap over a 685 (ready-to-go battery case) than change the batteries when a battery fails!

I would not delay acting now in the hope that a Master 685 might be produced! That is an excellent principle - there's a time to experiment, and a time to consolidate.