Originally posted by littledrawe I ordered the Apurture brand with the package with one receiver and one trigger from Amazon and the receiver/trigger had labels marked "for Canon" the label on the outside of the package put on after the fact said Pentax compatible. Its pretty frustrating that they got this wrong, I wanted to take them out of the package and test to see if they worked with my cameras but instead what I wanted more was what I actually ordered so I called them to have them send me the right one and I'll send this one back. I didn't look at the pins to see if they were the same.
ATTENTION:
What happened to littledrawe happened to me, but I will explain some good detail here:
Camera Gear used: 2 each Pentax K5 cameras, one Metz 58 AF2, one Yongnuo AF 560 ii
I ordered a set of Aputure Trigmaster 2.4Ghz for Pentax (listed as for Pentax on Amazon.com). I received a package that said "for Canon" also. I called Fotodiox support and they said the trigs are for Pentax also, though labeled for Canon. SO, I continued to test them out, but they did not work!!!
First issue: they will NOT sync faster than 1/100. Try to shoot 1/125 and there will be a dark fade on part of the image, 1/160 is a black out, but these advertise 1/250: NOT SO!!!
Second issue: Initially they work right after turning them on (at 1/100), but then they go to sleep after about 2 minutes. Press the test button on transmitter, first flash fires, second flash fails, press a second time, they both work. THEN you can take a picture. Pain in the Friggin' Butt!!!!!!!!!! If you try to just hit the shutter, nothing wakes. You will get black images if you shoot since the flash will not fire. ( AND YES, I TURNED OFF SLEEP MODES ON BOTH FLASHES!) I also tested these without being mounted to the flash and cameras. There are confirmation lights on the transmitter and receivers themselves so you know if they communicate. These things do not even communicate with each other: the issue is the same with or without gear attached.
SO, I called and emailed a tech support rep at Fotodiox. He shipped me a second set of Aputure Trigmaster 2.4Ghz transmitter+2 recevier combo package. He said he would test them first. NOT SO. I received the package 2 days late and obviously untested for the batteries that came with the package were dead and the package was unopened. FORTUNATELY, I had a spare A23 battery.
Well, I tested the second set. SAME PROBLEMS. I have the package sitting at my feet to return with a prepaid label going back to Amazon. The other set was returned directly to the manufacturer.
BOTTOM LINE: APUTURE TRIGMASTER 2.4Ghz do NOT work with Pentax Cameras!!!