NO!!!! they need to fire ahead of the shutter! ALL flashbulbs take a long time after ignition to burn and reach peak brightness, and focal-plane bulbs burn longer after that, so the shutter has to be delayed, not the bulbs!
No! Your information is wrong. There is no shutter lag at all with X synch, which is the only kind incorporated into modern cameras.
What are you talking about? No flashbulb burns that long!
This makes no sense at all. What are you talking about?
Wow! You really need to look into the spec's of what I posted and pay attention. I'm doing it now and proving my results. Are you? Your theory, and what happens in practice and use, do not mix.
Fact:
Nikon D800E shutter lag is 43ms without AF engaged. If you engage AF, then maybe 250 ms or whatever variable time it takes for the lens to lock-on AF, but I am in manual mode to circumvent that. So 43ms it is for the shutter lag number once into Manual mode.
If you saw the first curve I posted, it takes about 5ms for the #40 bulb to ignite, and then about 20ms to hit full burn. Then goes dark in about 50ms. If you use the Nikon remote via their 10 pin and their cord, the metering and AF signal activates the shutter first (and required too), and then the lag until the mirror flips out of the way and the shutter is fully open which occurs 43ms later. Hence the flash bulb does need to lead the Nikon D800E shutter release using their cabling and not shoeing it all.
I am not using the hot shoe, nor their PC outlet as it might not take the amperage to fire the bulb with the 220uf trigger capacitor running off a 15 volt battery. Don't know if a 220uf @ 15 volts as a short of the bulb's trigger capacitor will fry the camera's internals so it has been isolated via separate relays. Been there already, and why I started this post.
I was getting severe underexposure as the bulb was firing on the tail-end of the shutter's lag timing. Hence the flash meter and my trial GN test exposures did not match and images were underexposed - a lot. It is now fixed via a microprocessor timing to fire the bulb "ahead" of the shutter release signal for the #40 bulbs. I needed to re-program the microprocessor delay from the FF-33 or PF-330 bulbs ramp-up to maximum burn delay for the #40 bulbs, since they have a very long ramp up to maximum burn of about 400ms. In short, I'm now tripping the shutter ahead of the bulb. For the Meggaflash/Sylvania bulbs, the opposite occurs to fire the bulb far later than the shutter (or where I came from.).
The Meggaflash PF-330 specs are here:
http://www.meggaflash.com/meggaflash-bulbs/pf330-flashbulb Notice the 400ms lag time to peak burn, way behind the Nikon 43ms lag, or subtract that from 400ms making the flash trigger at 357ms. Plus notice the extreme duration burn time of almost "TWO SECONDS" once fired (Okay, 1.75ms is good enough.). The Meggaflash PF-330 is a copy of the old discontinued Sylvania FF-33 bulbs that are a perfect spec's match. Notice too the extreme output of 140,000 lumen seconds.
All this flash bulb control stuff needs to be done via a microprocessor now if ones use the Nikon 10 pin remote cable like the MC-30A, or their banana lead (MC-22) one.
Like I said, I'm doing it and now proving it to myself as well as the flash meter which now agrees with the theoretical guide numbers and the test photos. I made the error of sync'ing it all up later (Prepared for the FF-33 bulbs) and got me here to ask. Since then, I've learned I was in error and on the tail end of the #40 bulb burn and why the Press #40 bulbs must be fired "ahead" of the shutter lag in the Nikon via the cabling since they cable parallel off to a shutter trip relay as well as the flash bulb relay. If the bulbs goes dark around 50ms after ignition, and the shutter lag is 43 ms, you got little to nothing like I had.
Luckily, the microprocessor control timer I am using (Radio Shack Uno and a Seed Relay Shield v2.0, fwiw.) allows me to set a fixed microsecond timing occurrence to either lead or lag the Nikon shutter relay to address it. With the Meggaflash PF-330 or Sylvania FF-33 discontinued flashbulbs, it must occur long 'after' the shutter lag time to hit their peak burn. With the faster Press #40 bulbs, the shutter relay lag of 43ms needs to get going 'ahead' of the flash relay before it trips the #40 as it only takes 5ms to get them going - else you got squat like I did prior.
Neat part of the Arduino Uno relay's circuit board is the LED's that are visible on it as to the relay's (both shutter and flash relays) operation. The shutter relay trips ahead of the flash relay for the #40 bulbs. The opposite occurs for the Meggaflash bulbs - and it is a much longer visible LED delay too. You can actually tailor whatever bulbs you want in a digital camera, just it takes some timing control which I've also done - aside from my mistake of assuming the shutter lag matter on the Nikon compared to the Meggaflash/Sylvaniseries 33 curves and the older Wabash Press #40 ignition curves which are very different animals that got me here.
SG