Pocketwizard Hypersync!!!holycrap

[Snook]

is this with a PW?  i was doing a test shoot yesterday with my brons and using PW plus. i could only get 200th sec, and some days when shooting light bgs (so the dark band can be seen), only 125. pretty stink, when PW claim 250th flash sync with focal plane shutters!
when i use the sync cord to trigger, i get a full 250th sec sync.

paul

You need to know I shoot with the Pocket wizard MAX which supposedly has a higher flash rating.
I get 250th and sometimes clean 320 with Canon and Profoto 7A and acutes

Snook

[rljones]

Gabriel, posting at DPR, worked out a hypersync method using a Sony A700 and A900, obtaining syncs from 1/250 to 1/8000 sec:

http://forums.dpreview.com/forums/readflat...0308&page=1

His work has been verified by others with several flash units including Quantums, Interfit, Elinchrom, Broncolor (this unit with 1/250 for the flash duration setting on powerpack) and Profoto (this unit with 1/750 for the flash duration setting on powerpack).

David Kilpatrick at PhotoClubAlpha had ideas as to why some flashes worked and other may not:

http://www.photoclubalpha.com/forum/viewto...f=10&t=1881

[paul_jones]

paul, no this is not true.
I shot with 2 Elinchrom 600s monoblocs with a D70 at 1/1000th of a second before.
It worked. After that I couldn't find another dslr that did the same trick. If you can find a friend with a d70 you can give it a shot

thats cool. i was just saying how i understood how things work. not sure how the d70 can do that, unless the flash duration covers the whole shutter cycle of the d70.

paul

[paul_jones]

You need to know I shoot with the Pocket wizard MAX which supposedly has a higher flash rating.
I get 250th and sometimes clean 320 with Canon and Profoto 7A and acutes

Snook

pw claims 250th for the plus, but i havnt managed that. but i do use the h1 up to 800th and can hardly notice any drop off (i loose maybe 1/4 stop).

paul

[paul_jones]

Gabriel, posting at DPR, worked out a hypersync method using a Sony A700 and A900, obtaining syncs from 1/250 to 1/8000 sec:

http://forums.dpreview.com/forums/readflat...0308&page=1

His work has been verified by others with several flash units including Quantums, Interfit, Elinchrom, Broncolor (this unit with 1/250 for the flash duration setting on powerpack) and Profoto (this unit with 1/750 for the flash duration setting on powerpack).

David Kilpatrick at PhotoClubAlpha had ideas as to why some flashes worked and other may not:

http://www.photoclubalpha.com/forum/viewto...f=10&t=1881

i thought you would need to reduce the duration of a bron for it to work (duration can be dialed in on a bron grafit). but will it  still be good for freezing action. i guess so at 8000th. i wonder what the power gets cut down to on the flash.
this is cool, i shots a lot of action, it would be nice to mix flash and ambient at a high shutter speed.

paul

[Juanito]

I was just at the WPPI show. The Mac Group rep mentioned the new PW when we ran into each other. Unfortunately, I never made it by the booth to check it out. He told me that it could do 1/500 on my 5D with my Profoto 7b strobe. If that's true, that's HUGE news! I'm going to give it a test - if it checks out, I may just sell my MFDB set up and go with the 5D MII. Same MP for a heck of a lot less money.

One of the main reasons I use MF is for the faster sync speed. Usually, I'm at 1/320 to balance strobes to daylight so this would work out very nicely. If true of course.

John

[Adrian Roy]

This is my first post on the forum so I'd like to thank all of you for the information I've picked up here over the years.

I followed the link to dpr that was posted earlier and have adapted GB Software inc' s method with the Sony A900 on my Canon 5d.

I can get the Canon 5d to sync at 1/8000th of a sec with my bowens traveller packs & heads. See the exif in the following picture, this is a picture of one of the heads firing against a wall.
[attachment=11641:IMG_5166_LL.jpg]

The reason this seems to work is that the Bowens has quite a long flash duration, approx 1/700th of a sec.

I place a Canon 430 or 580 ex flash gun on to the hotshoe, set the flash to M and also to the high sync setting. I then connect the elinchrom skyport transmitter and the slave cell as illustrated and connect the skyport receiver to the bowens power pack.
[attachment=11642:IMG_5198_setup_1.jpg]

I fire the flash in the opposite direction as seen on the pic. Sorry it's a bit heath robinson with the elastic bands, I just needed something that would suffice for testing!
[attachment=11643:IMG_5203_setup_2.jpg]

At first I didn't think it was working and then realised that I needed to up the power on the packs. I found I needed between 1000-3000w depending on the shutter speed and aperture. I would imagine this set up would also work with other packs & heads with a slowish flash duration.

Adrian.

[jing q]

wonderful, thanks!
I tested a D70 with Profoto Acute2 packs in the past and managed up to 1/500th of a second before I started losing some exposure value.
I'm going to try this method with my AFd and ProB2 packs.

I think there may be some variation in terms of the brand of flash used and also the brand of slave cell used.
Will be interesting to see what works.

What's interesting to me is that it seems to make alot more sense than the technical information the new pocketwizards seem to be saying which is to trigger the flash EARLIER than the shutter, whereas in this DIY method the flash is trigger slightly LATER so that it allows the shutter time to activate first.

This is my first post on the forum so I'd like to thank all of you for the information I've picked up here over the years.

I followed the link to dpr that was posted earlier and have adapted GB Software inc' s method with the Sony A900 on my Canon 5d.

I can get the Canon 5d to sync at 1/8000th of a sec with my bowens traveller packs & heads. See the exif in the following picture, this is a picture of one of the heads firing against a wall.
[attachment=11641:IMG_5166_LL.jpg]

The reason this seems to work is that the Bowens has quite a long flash duration, approx 1/700th of a sec.

I place a Canon 430 or 580 ex flash gun on to the hotshoe, set the flash to M and also to the high sync setting. I then connect the elinchrom skyport transmitter and the slave cell as illustrated and connect the skyport receiver to the bowens power pack.
[attachment=11642:IMG_5198_setup_1.jpg]

I fire the flash in the opposite direction as seen on the pic. Sorry it's a bit heath robinson with the elastic bands, I just needed something that would suffice for testing!
[attachment=11643:IMG_5203_setup_2.jpg]

At first I didn't think it was working and then realised that I needed to up the power on the packs. I found I needed between 1000-3000w depending on the shutter speed and aperture. I would imagine this set up would also work with other packs & heads with a slowish flash duration.

Adrian.

[paul_jones]

wonderful, thanks!

What's interesting to me is that it seems to make alot more sense than the technical information the new pocketwizards seem to be saying which is to trigger the flash EARLIER than the shutter, whereas in this DIY method the flash is trigger slightly LATER so that it allows the shutter time to activate first.

i think i read that somewhere too. how does a PW trigger the flash before the shutter if you use the cameras shutter button?

i guess PW could control that if you used their product to also trigger the shutter of the camera.

the other day i was testing my shutter sync, and i couldnt get the PW to go over 200th on shutter sync, but when i plugged in the sync cord it was fine up to 250th. wouldnt the sync lead be quicker to trigger the flash than the PW? I need to do some serious testing to figure all this out. high sync on my mk3 is a very powerfull tool

paul