Youngo RF 602 - will it work TTL?

locostbob

locostbob

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Hey up...

pondering on a new flash and would like TTL for my canon.

As i dont have a TTL flash i cant try it out... just wondering if the Youngo RF 602 triggers will work with the TTL and communicate correctly? Looking at them i guess they will work with TTL as there are lots of conections on both the trigger and reciever...

Anybody tried them with a TTL flash and had much luck?? if they work can you dial in flash power ok from the camera?

cheers for your time

bob :)
 
No, the 602s only tell the flash to fire, they don't do the TTL bits. To do that wirelessly you need far more expensive triggers or do it optically with a master unit in the camera shoe.
 
RF-602 are really good, and great value :thumbs: They will also wake up the gun with first pressure on the shutter release, if it's gone to sleep, which is quite handy.

I think I've discovered why they have all those contacts on the foot, but it would be interesting if others could confirm. Basically, I think the RF-602 picks up its firing signal not from the central firing pin, but from one (or more) of the others. In this way, you can get a faster x-sync out of them. With Canon anyway.

For example, when I put the RF-602 transmitter directly in the hot shoe of my 5D2, I can pretty much get a clear frame at 1/200sec - which is the nominal max x-sync. You're not supposed to be able to do this, because of the slight delay that the RF processors introduce to the system. But if you fire them off the hot shoe via an adapter, or off the PC socket, then I need to drop to 1/160sec.

In other words, the RF-602 picks up on an E-TTL firing signal which, for reasons only Canon knows, is issued fractionally ahead of the regular PC trigger signal. Presumably in anticipation of other delays inherant to the Canon E-TTL system. Has anyone else noticed this? Might be just a 5D2 quirk. David?

Edit: absolutely no E-TTL auto flash exposure control though. That'll cost you £400 ;)
 
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a good combo is sticking with canon guns and using the built in ttl backed up with good radio slaves, they are both useful for different conditions and a working knowledge of manual is really really useful in sorting out ttl compensations and gun ratios
 
david1701 said:
a good combo is sticking with canon guns and using the built in ttl backed up with good radio slaves, they are both useful for different conditions and a working knowledge of manual is really really useful in sorting out ttl compensations and gun ratios
Click to expand...

David - post #4?
 
missed that :D

erm not really noticed tbh I'll do some testing when I get home but I've defo seen trails at 1/160 though it could be a battery thing
 
david1701 said:
a good combo is sticking with canon guns and using the built in ttl backed up with good radio slaves, they are both useful for different conditions and a working knowledge of manual is really really useful in sorting out ttl compensations and gun ratios
Click to expand...

+1

I think optical ttl (which can also remotely control guns in manual mode) gets quite an undeserved bad reputation. Indoors it always works perfectly for me, and outdoors there are always workarounds.

I wouldn't be without both.
 
HoppyUK said:
You don't need any cables to fire a hot-shoe gun. TX goes in the hot-shoe, RX goes in the softbox cold-shoe, and the gun slots into the RX.
Click to expand...

but sometimes its easier to do it the other way....

no it doesn't come with that cable as pc cables are outdated and should die :p It comes with the cables to hook it up to studio flash and to cameras

nb mine did I didnt check the link :s will check the link
 
that one comes with the studio flash cable only,

they list the rx-pc cable for like a fiver ditto the camera cable if you want them
 
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