Forgot Password
Pentax Camera Forums Home
 

Reply
Show Printable Version Search this Thread
01-24-2018, 03:54 PM   #16
Site Supporter
Site Supporter




Join Date: Mar 2008
Location: Prince George, BC
Photos: Gallery | Albums
Posts: 3,127
Nigel - Thank you forthe great write-up. I would assume that the intention of the Radio ID function is to isolate your flash setup should you find yourself set up beside one or more other flash setups operating in the 2.4 G Hz band.

Jack


Last edited by jbinpg; 01-24-2018 at 04:02 PM.
01-24-2018, 04:27 PM   #17
Pentaxian
mcgregni's Avatar

Join Date: Sep 2012
Location: Surrey, England
Posts: 2,603
Glad you saw it! I'm not sure if this will convert me from being "P-TTL Man" into being "Cactus Man" ...(well, "Vice Cactus Man" after ClassA of course!) ...."Acon Man" seems to have become a vacant position now, unless Clackers has already been appointed

The Radio ID does seem superfluous, considering that there are also 16 channels .....
01-25-2018, 04:05 AM   #18
Pentaxian
Class A's Avatar

Join Date: Aug 2008
Location: Wellington, New Zealand
Posts: 10,912
QuoteOriginally posted by mcgregni Quote
The Radio ID does seem superfluous, considering that there are also 16 channels ...
That's my view as well.

The purpose of the radio ID feature is to avoid interference with other photographers using Cactus equipment as well. However, using a different radio channel is a better solution because one not only avoids interference but also radio packets clashing with each other. Two photographers using different channels (say one using "1" and the other "13") should be able to work in parallel without radio packets ever clashing. If both use the same radio channel then there is at least a remote chance that their radio packets clash and misfiring or other problems occur.

The Cactus manual does not really explain why the "Radio ID" feature is there in the first place and I had to think very long and very hard to come up with one justification: Imagine you arrive at a scene (say a wedding) and another photographer happens to use Cactus equipment as well, configured to the same radio channel as you use. In this case, you'd have to go through all your devices and change the radio channel.

If you choose a creative radio ID then the chance that someone else will use the same radio ID is lower (1/10000 vs 1/16), i.e. you reduce your risk by a factor of 625 and it becomes very unlikely that you'll ever have to reconfigure all of your devices.

Another, very implausible, AFAIC, justification could be that you really want to work with a particular radio channel (say all others are heavily compromised) but someone else is using that channel already.

Overall, I'd say there is precious little justification for a "radio ID" feature.

Last edited by Class A; 01-26-2018 at 02:56 AM.
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!
cactus, camera, camera hss, flash, hss, lighting, mode, p-ttl, photo studio, strobist, sync, tx
Thread Tools Search this Thread
Search this Thread:

Advanced Search


Similar Threads
Thread Thread Starter Forum Replies Last Post
Pentax HSS with Cactus V6ii and Godox Ving 850 Flash - Success howieb101 Flashes, Lighting, and Studio 46 09-02-2018 09:00 AM
Pentax HSS with Cactus V6ii and Godox Witstro AD360 Flash Light Speedlite fwbigd Flashes, Lighting, and Studio 89 04-23-2017 07:37 PM
HSS With Pentax K-1+Cactus V6ii and Godox 360 fwbigd Pentax K-1 19 03-10-2017 08:55 AM
Cactus optical triggering w/ P-TTL HSS flash - settings bobbotron Flashes, Lighting, and Studio 32 12-31-2015 12:05 PM
HSS with a non P-TTL Flash off camera? Not Registered Flashes, Lighting, and Studio 13 12-05-2007 12:12 PM



All times are GMT -7. The time now is 08:12 AM. | 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