Cactus V4 problems

vizjerei · 12-29-2009, 09:09 AM

Originally posted by StarDust

I assure you that they are temperature sensitive. They always work accordingly when not cooled down (or not at all i.e. misfire) but when under a certain temperature, about 8 degrees Celsius they go down to 1/15 s.

I have been using them while snowing, both the older gen. flashes AF280T & AF200T works great and sync. Only the 540 give me 1/15 sync.

I just try put the 540 set on the heater outlet, when I just put it there it doesn't sync, but after 1 min, it sync at 1/180... so is that mean the new gen. flash need a warm up?

attack11 · 12-29-2009, 09:52 AM

my 540 acts up as well in conditions that don't affect my trusty viv 285hv. a power cycle or two seems to fix it. i'm assuming battery power is the issue, anything less than a full charge seems to cause it.

StarDust · 12-29-2009, 02:45 PM

But why would the optical sync work perfectly then? When I use the built in flash as a remote it works just fine.

vizjerei · 12-29-2009, 07:13 PM

Originally posted by StarDust

But why would the optical sync work perfectly then? When I use the built in flash as a remote it works just fine.

so as putting 540 on K10D hotshoe and it sync 1/180...

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12-29-2009, 09:09 AM	#16
vizjerei Veteran Member Join Date: May 2007 Location: Toronto Photos: Gallery Posts: 1,418	Originally posted by StarDust I assure you that they are temperature sensitive. They always work accordingly when not cooled down (or not at all i.e. misfire) but when under a certain temperature, about 8 degrees Celsius they go down to 1/15 s. I have been using them while snowing, both the older gen. flashes AF280T & AF200T works great and sync. Only the 540 give me 1/15 sync. I just try put the 540 set on the heater outlet, when I just put it there it doesn't sync, but after 1 min, it sync at 1/180... so is that mean the new gen. flash need a warm up?

12-29-2009, 09:52 AM	#17
attack11 Veteran Member Join Date: Apr 2007 Location: Ottawa, ON - Canada Photos: Gallery Posts: 658	my 540 acts up as well in conditions that don't affect my trusty viv 285hv. a power cycle or two seems to fix it. i'm assuming battery power is the issue, anything less than a full charge seems to cause it.

12-29-2009, 02:45 PM	#18
StarDust Veteran Member Join Date: Apr 2008 Location: Uppsala, Sweden Posts: 400 Original Poster	But why would the optical sync work perfectly then? When I use the built in flash as a remote it works just fine.

12-29-2009, 07:13 PM	#19
vizjerei Veteran Member Join Date: May 2007 Location: Toronto Photos: Gallery Posts: 1,418	Originally posted by StarDust But why would the optical sync work perfectly then? When I use the built in flash as a remote it works just fine. so as putting 540 on K10D hotshoe and it sync 1/180...