Yongnuo RF-603N Funny story

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Mfrankfort

Senior Member
So I picked up a set of these, to use primarily as a remote shutter control. I was curious to see how they would work with my flashes. I was told that they are non TTL, and flash can only be used in M mode. Well, thats not true. I threw them on my 568, and 565, set them to TTL, and they fired, in TTL. I wasn't sure if it was actually getting TTL, so I switched it to M, and got a white image due to the over-powering of the flash. So TTL does work.... You can't control it through the commander mode, but TTL does work for me. Anyone else have experience with these?

Edit- TTL does not work.
 
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carguy

Senior Member
I thought I read somewhere those were initially supposed to support TTL, but the functionality may have been 'turned off'? Not sure. Cool that you are able to do that :)
 
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Mfrankfort

Senior Member
hmm. I have the one 603 on the camera, and the other on the 565ex (also tried with 568ex), and had that set to ttl, and the mode set to on camera. (The picture with the flash on the camera), and it worked in TTL and M. I tried both, and the TTL gave me a normal exposure, and tried to M 1/1 and it was blown out. So it def metered something right. Did you have the mode on the flash set to where it thinks it's on the camera? I had slave off on the 565, and the picture of the flash on the camera for the 568. So weird...

Edit- TTL does not work
 
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Mfrankfort

Senior Member
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Mfrankfort

Senior Member
Not sure why... but it's working still. Mode is set to "Slave off" and switching between TTL and M does what it says.


Edit- TTL does not work
 
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Mfrankfort

Senior Member
If anyone gets a chance to try this, let me know.

RF-603n, with a 565/568ex mounted on top. 565 set to slave off and ttl. 568 mode set to the picture of the flash on camera (not s1 or s2) in ittl. Other RF-603 on the camera. Let me know. Thanks

Edit- TTL does not work
 
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rocketman122

Senior Member
had the 603's. the most basic thing is missing which is a locking wheel. dont know what the hell those people there were thinking. my flash/slave came out quite a few times. luckily I was fast enough to catch it until I wasnt and the 568 crashed to the floor. what garbage. couldnt get rid of them fast enough. for the same money I got commlite G430. $25 shipped. fantastic slaves. ttl pass through hot shoe. locking wheel with pin. also have 4x622n.

My 603's never worked in ttl. I had to bounce the flash up cause it was was burning every photo with the head down.
 
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Mfrankfort

Senior Member
We figured this out in another thread... they don't work in TTL. Well.. they function while in TTL mode, but doesn't actually do TTL. I pretty much use them as a wireless trigger for now, just waiting on the YN-622 TX to come out so I can get some 622's.
 
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Mike D90

Senior Member
I read that they do actually work in TTL but will only work TTL, with a TTL capable flash gun, when using a single flash. Does not work using multiple flash units.
 
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Mfrankfort

Senior Member
I did a few experiments with this. I had the flash (568) set to TTL and it fired via in fared to give me a good exposure. However, when I moved it back further away, and tried to bounce it, it was giving me WAY underexposed images. So it was basically chance that when I was trying it, it was giving me a proper exposure.
 
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Mike D90

Senior Member
I would like to play with the TTL capability of these but none of my flash units are TTL capable (old Vivitar 283's and 2800's).
 
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WayneF

Senior Member
Mfrankfort said:
hmm. I have the one 603 on the camera, and the other on the 565ex (also tried with 568ex), and had that set to ttl, and the mode set to on camera. (The picture with the flash on the camera), and it worked in TTL and M. I tried both, and the TTL gave me a normal exposure, and tried to M 1/1 and it was blown out. So it def metered something right. Did you have the mode on the flash set to where it thinks it's on the camera? I had slave off on the 565, and the picture of the flash on the camera for the 568. So weird...
Click to expand...

Again? Don't confuse everyone. No, cannot possibly be right. Said again more plainly, there is absolutely no way in hell the flash can do TTL on a simple radio trigger. Radio trigger requires flash Manual mode. (yes, there are expensive alternatives which are different, but the 603 is not among them).


TTL requires communication between camera and flash, first to request TTL preflash, to meter preflash, and to set the power level of the TTL flash unit, and then trigger it. Only the hot shoe (one flash) and commander (a couple of flashes) can do this. The radio trigger uses a single wire communication (PC sync or hot shoe center pin), and this TTL job cannot be done without the full communication.

TTL mode will trigger from the single pin, but not at a metered power level. I'd guess probably always at 1/16 power, same as the Test Button in TTL mode (because the proper TTL level is simply not metered then).

So again, before you tell us this stuff, do verify your "TTL" with multlple tries at different levels, requiring minimum power and maximum power, to verify it does it. I think it only does one middle power, always, without any control, which is NOT TTL.

Another method to make you believe it. Set Rear Curtain sync with a long shutter speed, at least one second.
TTL flash on the hot shoe will flash twice, the TTL preflash just before the shutter opens, and the final TTL flash at the end of the shutter duration. This method allows you to see and differentiate these.

Your false TTL assertion will only flash once at the end of the shutter duration, no TTL preflash.
 
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Mike D90

Senior Member
WayneF said:
Again? Don't confuse everyone. No, cannot possibly be right. Said again more plainly, there is absolutely no way in hell the flash can do TTL on a simple radio trigger. Radio trigger requires flash Manual mode. (yes, there are expensive alternatives which are different, but the 603 is not among them).


TTL requires communication between camera and flash, first to request TTL preflash, to meter preflash, and to set the power level of the TTL flash unit, and then trigger it. Only the hot shoe (one flash) and commander (a couple of flashes) can do this. The radio trigger uses a single wire communication (PC sync or hot shoe center pin), and this TTL job cannot be done without the full communication.

TTL mode will trigger from the single pin, but not at a metered power level. I'd guess probably always at 1/16 power, same as the Test Button in TTL mode (because the proper TTL level is simply not metered then).

So again, before you tell us this stuff, do verify your "TTL" with multlple tries at different levels, requiring minimum power and maximum power, to verify it does it. I think it only does one middle power, always, without any control, which is NOT TTL.

Another method to make you believe it. Set Rear Curtain sync with a long shutter speed, at least one second.
TTL flash on the hot shoe will flash twice, the TTL preflash just before the shutter opens, and the final TTL flash at the end of the shutter duration. This method allows you to see and differentiate these.

Your false TTL assertion will only flash once at the end of the shutter duration, no TTL preflash.
Click to expand...

This makes sense. Yongnuo does make a set of triggers that claim TTL communication but it is not the RF-603's.
 
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Mfrankfort

Senior Member
WayneF, why do you hate me so much? :( That was my post from November last year before I did the tests that you quoted. My most recent post from earlier today verifies they do NOT do TTL.
 
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WayneF

Senior Member
I am sorry then, my apologies, I did think the subject was being raised again. What I do hate is to see wrong stuff offered as true, because some might try to believe it. :)

Is edit still possible? Maybe a note added to first message in thread stating "EDIT: TTL capability is of course incorrect, disclaimed below" ?
 
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Mfrankfort

Senior Member
I did say that, haha. In my last post on the first page. And again the post right before yours. Apology accepted. haha. Still friends? However, I did order some 622n's and the 622tx that DO do TTL. Pretty excited to try those out.
 
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