« on: October 29, 2014, 02:51:56 PM »
The question I guess is how many people will use a light meter with 600-EX-RTs.There is interested in using multiple "small" portable strobes especially on location instead of larger albeit portable units - a meter may be useful especially if it also doubles as a full remote control for flash units - you're going to use them in manual mode and be able to change settings from the meter can be really helpful.
If the number of prospect customers is large enough to justify trying to obtain a license from Canon, Nikon, etc. - which may not be free, and maybe not even available - and the R&D and manufacturing expenses of supporting many different standards is another thing.
After all PocketWizard adapters can handle Canon strobes, thereby those interested and willingly to pay for a multiple 600EX setup should have not much issues in getting adapters also - although it results in a more complex setup and troubleshooting if something does not work as expected.