Forgot Password
Pentax Camera Forums Home
 

Reply
Show Printable Version Search this Thread
03-22-2016, 04:48 AM   #1
Pentaxian




Join Date: Dec 2011
Posts: 2,128
Acon R930 multi flash setup HSS fun fact using Metz-Canon flash as second unit

I stumbled upon the following fun fact.

Setup:
Pentax K-3 II with Acon R930 trigger on top. Camera set tp 1/1000 shutter time, well into HSS territory.
5 meters away the Acon receiver with Pentax AF540 I flash in HSS mode.

So far: As usual works nicely in wireless PTTL-HSS mode.

Now I also happen to own an Metz 58-2 for Canon (!). Turned it on off camera and it starts in slave mode 1/1 power. Fine.
Since at shutter speeds beyond 1/180 the center trigger contact in pentax doesnt send a signal, only optical slave works.

Now the fun part:
The optical slave Metz will actually fire at the right time (no issues with Pentax preflash)!
And: There is no shutter shadowing in the image at 1/1000.


So I now have the option to fire two flashes in HSS speeds using just one Acon pair and that with a "non-compatible" off brand flash.
Obviously the power on the Metz needs to be adjusted manually.

Since I also have a Canon Yongnuo 568EX I guess I'll try three flashes later.

No idea why it works but it does.


Last edited by beholder3; 03-22-2016 at 05:09 AM.
03-22-2016, 05:03 AM   #2
Pentaxian




Join Date: Jun 2009
Location: GMT +10
Photos: Albums
Posts: 11,517
QuoteOriginally posted by beholder3 Quote
I stumbled upon the following fun fact.
Whatever works, works. No need to understand how or why.

I think the Acon triggers make a lot of interesting flash combinations possible.
I haven't even tried them with my Cactus v6 yet.
03-22-2016, 05:11 AM   #3
Pentaxian




Join Date: Dec 2011
Posts: 2,128
Original Poster
Tried the YN568EX and it semi works, so there is no shadowing, but seemingly the burndown rate is not good so it only sheds much less light than the Metz.
03-22-2016, 06:36 AM   #4
Pentaxian
Class A's Avatar

Join Date: Aug 2008
Location: Wellington, New Zealand
Posts: 9,988
QuoteOriginally posted by beholder3 Quote
So I now have the option to fire two flashes in HSS speeds using just one Acon pair and that with a "non-compatible" off brand flash.
You should find that choosing anything less than 1/1 (full power) on the Canon will lead to only part of the frame being illuminated by the Canon (-> black bar effect).

The Canon will not emit an HSS pulse burst so you are using it in a HyperSync-like fashion.

03-29-2016, 03:29 AM   #5
Veteran Member
awaldram's Avatar

Join Date: May 2008
Location: Hampshire
Photos: Gallery
Posts: 732
QuoteOriginally posted by beholder3 Quote

No idea why it works but it does.
Strobist: Rise (and Fall) of The Machines: Understanding t.5/t.1 Times

Its nothing to do with you triggers the requirements are only
1 camera able to provide flash trigger faster than 1/180
2 flash 1:1 t.5 greater than shutter period.
Reply

Bookmarks
  • Submit Thread to Facebook Facebook
  • Submit Thread to Twitter Twitter
  • Submit Thread to Digg Digg
Tags - Make this thread easier to find by adding keywords to it!
acon, acon r930 multi, flash, fun, hss, lighting, metz, mode, pentax, photo studio, shutter, slave, strobist
Thread Tools Search this Thread
Search this Thread:

Advanced Search


Similar Threads
Thread Thread Starter Forum Replies Last Post
Acon R930 P-TTL radio trigger and 1/8000 Sync rawr Flashes, Lighting, and Studio 163 02-12-2019 09:49 PM
Pentax & Cactus Multi-Flash Wireless HSS Demo mcgregni Flashes, Lighting, and Studio 20 04-21-2016 10:41 AM
Will using canon flash? Rob wright Flashes, Lighting, and Studio 6 12-17-2014 07:16 AM
Strange Happening Wth Metz Flash In P-TTL/HSS. tabl10s Pentax K-3 11 04-05-2014 12:05 PM
Second Flash HSS dane.dawg Flashes, Lighting, and Studio 4 05-12-2013 05:43 AM



All times are GMT -7. The time now is 10:42 PM. | See also: NikonForums.com, CanonForums.com part of our network of photo forums!
  • Red (Default)
  • Green
  • Gray
  • Dark
  • Dark Yellow
  • Dark Blue
  • Old Red
  • Old Green
  • Old Gray
  • Dial-Up Style
Hello! It's great to see you back on the forum! Have you considered joining the community?
register
Creating a FREE ACCOUNT takes under a minute, removes ads, and lets you post! [Dismiss]
Top