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03-07-2016, 06:18 PM   #1
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Yongnuo RF-603 Compatibility

I saw the Yongnuo RF-603 II N3 transceivers (2) on Amazon for a little under 30 dollars. It lists Pentax as one its compatibility brands. To be more specific, is this considered to be compatible (functional/safe) with the K-5IIS, K-3II, and the Pentax AF360FGZ? I appreciate any information/opinions.

http://www.amazon.com/Yongnuo-Professional-Trigger-RF-603-Olympus/dp/B00KZ9W...ger+for+pentax

03-07-2016, 06:27 PM   #2
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I used them before, and they were fine. As long as you dont get too far from the subject
03-07-2016, 06:34 PM   #3
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I would probably at most be 10-20 feet away. If I could do 30 that would be nice. It says 100 meters in the description.
03-07-2016, 07:04 PM   #4
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I was able to trigger flashes reliably with RF-603s at least 100 feet away. The flashes were indoors, and I was outdoors on the other side of a parking lot with some minor trees between us. The 603 II N (for Nikon) will work with any Pentax body, but the Canon version won't (I've got one unit that will, but others have not been so successful). The 'N3' just indicates which remote shutter cable comes with a pair of transceivers - none of the Nikon cables will work with Pentax bodies; you need a Canon 'C1' cable (go figure).

Bear in mind that the transceivers are just basically a long dumb flash cord, with no P-TTL capability or anything like that. But so long as all you want is a trigger for a manual flash, they work great.

03-07-2016, 07:28 PM   #5
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100 feet was doable. i kept at around 60 to be on the safe side
03-07-2016, 07:31 PM   #6
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So the cable that comes with the Yongnuo kit would not function, and I would have to get something similar to the following? The description in the Yongnuo kit mentions an LS-2.5 shutter cable, and the 2.5 cable spec sort of sounds like the Pentax 2.5 spec for the cable plug in.


http://www.amazon.com/Foto-Tech-2-5mm-C1-Control-PowerShot/dp/B017O8717U/ref...Cajon+c1+cable

Last edited by C_Jones; 03-07-2016 at 07:41 PM.
03-07-2016, 07:36 PM   #7
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QuoteOriginally posted by C_Jones Quote
So the cable that comes with the Yongnuo kit would not function, and I would have to get something similar to the following?

http://www.amazon.com/Foto-Tech-2-5mm-C1-Control-PowerShot/dp/B017O8717U/ref...Cajon+c1+cable
Yep, that's the one!

03-07-2016, 07:44 PM   #8
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So, though the cable in the original kit mentions the 2.5 spec, it is still not Pentax compatible?
03-07-2016, 07:51 PM   #9
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QuoteOriginally posted by C_Jones Quote
So, though the cable in the original kit mentions the 2.5 spec, it is still not Pentax compatible?
The N3 has a 2.5mm on the end that plugs into the trigger, but a square thing that looks like a micro-USB (but isn't) on the other.

http://www.amazon.com/YONGNUO-LS-2-5-RF-603-Shutter-Release/dp/B00IL6CGA2
03-07-2016, 08:42 PM   #10
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So the one end makes the LS-2 incompatible, but the C1 will plug into the Yongnuo transceiver and the Pentax camera (K-3II or K-5IIS) to enable compatible function (flash triggering) for off camera flash units. Does a flash unit that is off camera with a Yongnuo transceiver attached require the C1 (which I sort of doubt)?

Last edited by C_Jones; 03-07-2016 at 08:55 PM.
03-07-2016, 09:12 PM   #11
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You only need the cable to trigger a camera remotely. Off-camera flashes can be triggered either through the hot shoe or the old fashioned PC-sync connector. If you don't plan to use a 603 as a remote shutter release, then you don't need any cable.
03-07-2016, 09:26 PM   #12
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So, if I did not get a C1 cable for release, I would just place the 603 transceiver on my camera hot shoe, and press the shutter button.

I actually already have a Vello wired remote shutter release, so I could use that if I wanted to.

Last edited by C_Jones; 03-07-2016 at 09:31 PM.
03-07-2016, 09:37 PM   #13
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QuoteOriginally posted by C_Jones Quote
So, if I did not get a C1 cable for release, I would just press the shutter button.

I actually already have a Vello wired remote shutter release, so I could use that if I wanted to.
Yep, that would work fine.

This is a short video that I put together showing various 603s, bodies, and flashes - like I said, I can get a version II-C to work, but others can't, so just ignore what I say about the Canon version and stick to the Nikon.

03-07-2016, 10:10 PM   #14
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That was really informative and a good demonstration. I can see how the C1 is useful, and on the other hand it is not completely necessary. I suppose maybe my Vello wired release might wake up the camera with a half press, but am not sure. But it will definitely fire the camera, which in turn will fire the off camera flash (with 603s on both). I doubt that I would use the 603 as wireless remote, but if I need to I will get the C1. I will also stick to the 603II for Nikon version of the transceivers per your recommendation. Well, if I do get them, I will probably just get the two to test with, and if they turn out alright, I would get some more (2). Since I have 3 AF360FGZ flashes and my camera(s), 4 would cover activity. I have AAA rechargeable batteries and a charger, I would have the energy need covered.

Thank you. You have been very helpful.

Last edited by C_Jones; 03-07-2016 at 10:20 PM.
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