Cactus V5 Sync Speed with Studio Strobes?

I was thinking of ordering the Cactus V5's but I thought I read somewhere that they won't sync higher than 1/60sec on Studio Strobes. Can someone confirm or deny this information?
I would like to use those triggers on a Mettle Brand 600 WS Studio Strobe but want to be able to sync up to my 7D's 1/250 sync speed.

Well, with my travelite 750, it's fully sync'ed just 1 stop under speed.... ie, 1/200 for 7D and 1/160 for 5D2.

Thanks for the reply mellofelow, I do find it odd that you can't sync at 1/250th though with the 7D. Maybe someone that knows more than myself (just about everyone I'm afraid) about triggers and strobes can offer a reason as to why not?

I used mine at 1/250 with my genesis strobe and 7d.

mnaz wrote in post #12294719
I used mine at 1/250 with my genesis strobe and 7d.

Thanks for the reply mnaz. I just may go ahead and order a set just to try with the Studio Strobe at 1/250 and if it works I'll go ahead and order more.

Mine works fine at 1/200 on my alien bees with my T2i.

Thorrulz wrote in post #12291742
I was thinking of ordering the Cactus V5's but I thought I read somewhere that they won't sync higher than 1/60sec on Studio Strobes. Can someone confirm or deny this information?

If someone had that problem it would be an issue with their strobes and not the V5. I did some timing measurements and posted them on my blog. The V5 has only a 725 microsecond delay from trigger input to slave output.

rudy_216 wrote in post #12298580
If someone had that problem it would be an issue with their strobes and not the V5. I did some timing measurements and posted them on my blog. The V5 has only a 725 microsecond delay from trigger input to slave output.

Very informative blog rudy_216. I'll be ordering 2 sets in the morning and hopefully they'll arrive by the family reunion towards the end of next month.
Next question, hopefully someone can mention a good retailer for purchasing the V5's.

they only sell them at gadgetinfinity

k.CHU wrote in post #12299067
they only sell them at gadgetinfinity

Thanks.

As with all triggers, put new batteries in them when you get them. They often ship with low powered tester batteries which cause them to act erratically.

A day late, but I finally have them ordered plus the shutter release cable. I paid a total of $150 with 5 Day FedEx just to make sure they are here in time for the next family get together.

Keep in mind that normally a wired connection allows the camera body to close the circuit triggering the flash immediately, and then the flash has to react to the closure of the circuit...and any propogation delay has to fit within the fully-open shutter curtain time. That is where the 1/200 or 1/250 time limit comes from. But some studio flash units cannot react in time to the wired trigger, so that even when the camera body has a 1/200 X-synch time, it is necessary to use a 1/125 max shutter speed.


Now add a radio transmitter/receiver to the middle...the transmitter has to react to the camera, it has to send a radio signal, the receiver has to receive the radio signal, the receiver has to react to the signal and close the circuit to the flash...and all of this ADDS propogation delays. So even if you could previously use 1/200 with a wired connection, it might entail now needing 1/125. This is more true with budget radio triggers, who might add propogation delays that a more expensive radio trigger might not.