645z and High Speed Sync?

MikeKPhoto · 01-21-2016, 11:06 PM

Originally posted by mattb123

It sure looks like it.
The flash they are using is a Phottix Indra 500 TTL which says it's for Canon and Nikon at their site but I wonder if maybe they are working on Pentax compatibility.
It was pretty bright looking for those shots by the plane and with the wind blowing the dress and her hair it seems the exposure must be faster than 1/125, don't you think?

I emailed the company with a link to the video to ask. I'll report back if I hear anything.

I have the Indra 500 and have been unsuccessful using the Odin Transmitter. With the transmitter in the hot shoe the shutter speed is pegged to 1.125th max.

The transmitter show in the Video is not an Odin, probably a Mitros trigger which may work. Hopefully you get a response from Phottix that identifies the trigger.

Cheers

Mike

iancx · 04-27-2016, 01:06 PM

Hello everyone!

Was eagerly reading this thread to see if a solution for High Speed Sync on the 645z can be found using more than just flash units but via strobes with long flash durations (Elinchrom S strobes, Speedotron force 10 or 103's, Prophoto, Einsteins etc...).

If the acon r930 is achieving HSS with the 645z using pentax/metz flash units (the 645z detects the acon trans-sending unit as a PTTL flash when attached to the hotshoe and allowing the camera shutter speed to go beyond 125th).

In that case would attaching any other HSS transmitter systems, like cactus/odin/indra/jinbei hd 600 etc..... on top of the acon receiving unit (instead of metz/pentax flash) trigger the HSS functionality of these other systems as well?

My understanding was that any non PTTL devices on top of the 645z automatically makes the camera restrict the max sync shutter speed to 125th, except for the acon r930.

And yes I do know about the priolites but they are an expensive proposition for me right now.

I would love to get any feedback from the group.

Cheers to all!

iancx · 07-02-2016, 02:33 PM

Here is an update for anyone considering the Acon r930p wireless system to get HSS or High Shutter Sync or Hi Sync (whatever the proper term is lol!) with the pentax 645z and studio Strobes (l used Speedotron 103 heads).

Very happy to share the news that it works all the way to 4000/s with very little or no gradient and or banding. Totally usable with oudoors shoot.

All you need to do is ask the Acon support for a special firmware they have created to be used with 645z and studio storbes.

If anyone has any questions just PM me.

Cheers!

Pentax31 · 07-13-2016, 04:13 PM

I was able to use the ACON R930 transmitter on my 645D and two (from camera separated) AF540FGZ with the ACON R930 receivers, and HSS worked for me up to 1/4000sec in PTTL mode only (manual not possible). Thanks for the info on the firmware for studio strobes, that would be cool!
(Once ON, push "CH" for a few sec, then top button until light no.4 is on, then "CH" again. This is the PTTL/HSS modus...

**clackers** · 07-13-2016, 05:09 PM

Originally posted by Pentax31

HSS worked for me up to 1/4000sec in PTTL mode only (manual not possible). ...

HSS relies on P-TTL in all Pentax cameras.

Pentax31 · 07-14-2016, 06:07 AM

Yes, you have to "select" this (PTTL) mode on the R930...

Goreturist · 07-19-2016, 07:40 PM

I was able to use HSS off camera with my Metz 50AF-1(Pentax version ) and 645z using a new Cactus V6II. Interestingly I could not use HSS with Metz on camera.

iancx · 07-20-2016, 05:16 AM

Originally posted by Goreturist

I was able to use HSS off camera with my Metz 50AF-1(Pentax version ) and 645z using a new Cactus V6II. Interestingly I could not use HSS with Metz on camera.

Hey Goreturist,

That is great new for all 645z users 2 different triggers the ACON and the Cactus v6 II both working with the pentax to get past 1/125th.

Do you think that the Cactus will be able to trigger a studio strobe (using cable) instead of a flash mounted on it? And with the Metz flash/Cactus how fast were you able to go up with the shutter speed?

With the ACON r930p I am able to get all they way to 1/4000th with much issues. Would love to hear from you.

Cheers!

**Digitalis** · 07-20-2016, 06:57 AM

Originally posted by cosmonaut

I have looked at those but they are really costly.

HSS isn't cheap. I just gave up and use my Leica S2 for outdoor on location work, the native 1/1000th synch speed with Leica CS leaf shutter lenses remove the need for mucking about with restrictive flash settings* is rather...liberating.

*HSS places some rather hard limits on flash power levels and with HSS the GN of the flash is a fraction of its typical output. So you need even more power, or move the light source( which isn't always an option) to compensate.

**mattb123** · 07-20-2016, 12:23 PM

The new Priolite Ultra looks interesting and it's not quite as expensive or big as the first generation. Hopefully the price trend will continue downward.
They are having a Kickstarter campaign for it at the moment.

ryankarr · 07-20-2016, 12:49 PM

Originally posted by mattb123

The new Priolite Ultra looks interesting and it's not quite as expensive or big as the first generation. Hopefully the price trend will continue downward.
They are having a Kickstarter campaign for it at the moment.

I bought a MBX500HS light about 6 weeks ago and they're really solidly built. I've been very impressed with it overall so far and signed up for a second light from the kickstarter campaign.

Goreturist · 07-20-2016, 02:33 PM

Originally posted by iancx

Hey Goreturist,

That is great new for all 645z users 2 different triggers the ACON and the Cactus v6 II both working with the pentax to get past 1/125th.

Do you think that the Cactus will be able to trigger a studio strobe (using cable) instead of a flash mounted on it? And with the Metz flash/Cactus how fast were you able to go up with the shutter speed?

With the ACON r930p I am able to get all they way to 1/4000th with much issues. Would love to hear from you.

Cheers!

Up to 1/4000 no problems as well.As far as strobes go,reading from the manual it says you can trigger them using the cable,but would not be able to remotely control the power.So it looks like it would be dumb trigger with the strobes.
Hope this helps.
Vlad

**Digitalis** · 07-20-2016, 04:24 PM

Originally posted by mattb123

They are having a Kickstarter campaign for it at the moment.

Kickstarter is great, but there is a caveat to it: you are basically gambling with your money - there is no promise that the product released will be what it says it will be, there is no release date and there is also a chance the project won't even get off the ground to start with.

**mattb123** · 07-20-2016, 05:02 PM

Originally posted by Digitalis

Kickstarter is great, but there is a caveat to it: you are basically gambling with your money - there is no promise that the product released will be what it says it will be, there is no release date and there is also a chance the project won't even get off the ground to start with.

I know this all too well as a TriggerTrap Ada backer!

**Digitalis** · 07-20-2016, 05:10 PM

Originally posted by mattb123

I know this all too well as a TriggerTrap Ada backer!

ouch, I don't mean to rub it in but I backed MIOPS. Their goals for their product and its design were sensible, functional and modest. Triggertrap overreached with their product design, and also underestimated the funding required to actually go into production. This is also a problem with Kickstarter - sometimes the people managing the project are in over their heads.

07-20-2016, 06:57 AM	#39
Digitalis Site Supporter Join Date: Mar 2009 Location: Melbourne, Victoria Photos: Gallery Posts: 11,694	Originally posted by cosmonaut I have looked at those but they are really costly. HSS isn't cheap. I just gave up and use my Leica S2 for outdoor on location work, the native 1/1000th synch speed with Leica CS leaf shutter lenses remove the need for mucking about with restrictive flash settings* is rather...liberating. HSS places some rather hard limits on flash power levels and with HSS the GN of the flash is a fraction of its typical output. So you need even more power, or move the light source( which isn't always an option) to compensate. Last edited by Digitalis; 07-20-2016 at 07:03 AM.*

07-20-2016, 04:24 PM	#43
Digitalis Site Supporter Join Date: Mar 2009 Location: Melbourne, Victoria Photos: Gallery Posts: 11,694	Originally posted by mattb123 They are having a Kickstarter campaign for it at the moment. Kickstarter is great, but there is a caveat to it: you are basically gambling with your money - there is no promise that the product released will be what it says it will be, there is no release date and there is also a chance the project won't even get off the ground to start with. Last edited by Digitalis; 07-20-2016 at 05:00 PM.

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01-21-2016, 11:06 PM	#31
MikeKPhoto New Member Join Date: Nov 2015 Location: Walnut Creek, California Posts: 23	Originally posted by mattb123 It sure looks like it. The flash they are using is a Phottix Indra 500 TTL which says it's for Canon and Nikon at their site but I wonder if maybe they are working on Pentax compatibility. It was pretty bright looking for those shots by the plane and with the wind blowing the dress and her hair it seems the exposure must be faster than 1/125, don't you think? I emailed the company with a link to the video to ask. I'll report back if I hear anything. I have the Indra 500 and have been unsuccessful using the Odin Transmitter. With the transmitter in the hot shoe the shutter speed is pegged to 1.125th max. The transmitter show in the Video is not an Odin, probably a Mitros trigger which may work. Hopefully you get a response from Phottix that identifies the trigger. Cheers Mike

04-27-2016, 01:06 PM	#32
iancx New Member Join Date: Apr 2016 Posts: 21	Hello everyone! Was eagerly reading this thread to see if a solution for High Speed Sync on the 645z can be found using more than just flash units but via strobes with long flash durations (Elinchrom S strobes, Speedotron force 10 or 103's, Prophoto, Einsteins etc...). If the acon r930 is achieving HSS with the 645z using pentax/metz flash units (the 645z detects the acon trans-sending unit as a PTTL flash when attached to the hotshoe and allowing the camera shutter speed to go beyond 125th). In that case would attaching any other HSS transmitter systems, like cactus/odin/indra/jinbei hd 600 etc..... on top of the acon receiving unit (instead of metz/pentax flash) trigger the HSS functionality of these other systems as well? My understanding was that any non PTTL devices on top of the 645z automatically makes the camera restrict the max sync shutter speed to 125th, except for the acon r930. And yes I do know about the priolites but they are an expensive proposition for me right now. I would love to get any feedback from the group. Cheers to all!

07-02-2016, 02:33 PM	#33
iancx New Member Join Date: Apr 2016 Posts: 21	Here is an update for anyone considering the Acon r930p wireless system to get HSS or High Shutter Sync or Hi Sync (whatever the proper term is lol!) with the pentax 645z and studio Strobes (l used Speedotron 103 heads). Very happy to share the news that it works all the way to 4000/s with very little or no gradient and or banding. Totally usable with oudoors shoot. All you need to do is ask the Acon support for a special firmware they have created to be used with 645z and studio storbes. If anyone has any questions just PM me. Cheers!

07-13-2016, 04:13 PM	#34
Pentax31 New Member Join Date: Jul 2016 Posts: 9	I was able to use the ACON R930 transmitter on my 645D and two (from camera separated) AF540FGZ with the ACON R930 receivers, and HSS worked for me up to 1/4000sec in PTTL mode only (manual not possible). Thanks for the info on the firmware for studio strobes, that would be cool! (Once ON, push "CH" for a few sec, then top button until light no.4 is on, then "CH" again. This is the PTTL/HSS modus...

07-13-2016, 05:09 PM	#35
clackers Otis Memorial Pentaxian Join Date: Jul 2013 Location: Melbourne Photos: Albums Posts: 16,397	Originally posted by Pentax31 HSS worked for me up to 1/4000sec in PTTL mode only (manual not possible). ... HSS relies on P-TTL in all Pentax cameras.

07-14-2016, 06:07 AM	#36
Pentax31 New Member Join Date: Jul 2016 Posts: 9	Yes, you have to "select" this (PTTL) mode on the R930...

07-19-2016, 07:40 PM	#37
Goreturist Junior Member Join Date: Mar 2011 Location: Bergen County,NJ Posts: 30	I was able to use HSS off camera with my Metz 50AF-1(Pentax version ) and 645z using a new Cactus V6II. Interestingly I could not use HSS with Metz on camera.

07-20-2016, 05:16 AM	#38
iancx New Member Join Date: Apr 2016 Posts: 21	Originally posted by Goreturist I was able to use HSS off camera with my Metz 50AF-1(Pentax version ) and 645z using a new Cactus V6II. Interestingly I could not use HSS with Metz on camera. Hey Goreturist, That is great new for all 645z users 2 different triggers the ACON and the Cactus v6 II both working with the pentax to get past 1/125th. Do you think that the Cactus will be able to trigger a studio strobe (using cable) instead of a flash mounted on it? And with the Metz flash/Cactus how fast were you able to go up with the shutter speed? With the ACON r930p I am able to get all they way to 1/4000th with much issues. Would love to hear from you. Cheers!

07-20-2016, 12:23 PM	#40
mattb123 Site Supporter Join Date: Apr 2010 Location: Colorado High Country Photos: Gallery Posts: 10,872	The new Priolite Ultra looks interesting and it's not quite as expensive or big as the first generation. Hopefully the price trend will continue downward. They are having a Kickstarter campaign for it at the moment.

07-20-2016, 12:49 PM	#41
ryankarr Junior Member Join Date: Jan 2010 Location: Calgary AB Posts: 40	Originally posted by mattb123 The new Priolite Ultra looks interesting and it's not quite as expensive or big as the first generation. Hopefully the price trend will continue downward. They are having a Kickstarter campaign for it at the moment. I bought a MBX500HS light about 6 weeks ago and they're really solidly built. I've been very impressed with it overall so far and signed up for a second light from the kickstarter campaign.

07-20-2016, 02:33 PM	#42
Goreturist Junior Member Join Date: Mar 2011 Location: Bergen County,NJ Posts: 30	Originally posted by iancx Hey Goreturist, That is great new for all 645z users 2 different triggers the ACON and the Cactus v6 II both working with the pentax to get past 1/125th. Do you think that the Cactus will be able to trigger a studio strobe (using cable) instead of a flash mounted on it? And with the Metz flash/Cactus how fast were you able to go up with the shutter speed? With the ACON r930p I am able to get all they way to 1/4000th with much issues. Would love to hear from you. Cheers! Up to 1/4000 no problems as well.As far as strobes go,reading from the manual it says you can trigger them using the cable,but would not be able to remotely control the power.So it looks like it would be dumb trigger with the strobes. Hope this helps. Vlad

07-20-2016, 05:02 PM	#44
mattb123 Site Supporter Join Date: Apr 2010 Location: Colorado High Country Photos: Gallery Posts: 10,872	Originally posted by Digitalis Kickstarter is great, but there is a caveat to it: you are basically gambling with your money - there is no promise that the product released will be what it says it will be, there is no release date and there is also a chance the project won't even get off the ground to start with. I know this all too well as a TriggerTrap Ada backer!

07-20-2016, 05:10 PM	#45
Digitalis Site Supporter Join Date: Mar 2009 Location: Melbourne, Victoria Photos: Gallery Posts: 11,694	Originally posted by mattb123 I know this all too well as a TriggerTrap Ada backer! ouch, I don't mean to rub it in but I backed MIOPS. Their goals for their product and its design were sensible, functional and modest. Triggertrap overreached with their product design, and also underestimated the funding required to actually go into production. This is also a problem with Kickstarter - sometimes the people managing the project are in over their heads.