Originally posted by ScooterMaxi Jim Again, the video is a single event, no one is providing times, and not repeated. We do not know that the cameras are receiving the signal at the same time. An IR push button is not a single instant, but a prolonged signal send, AFAIK. When using IR I get delays all the time, varying, on any of the bodies - from the *istD, K-30, K-01, K20D, Q. They all use the same system, but they do not respond absolutely consistently to the signal. That's my experience. By the way, was the IR sending aimed between the cameras precisely, or directed more toward the K-X perhaps? IR senders are quite directional for good reason...
Still, no one seems to be doing actual timing. Other than IR, but that was with the original FW. Even if the K-X is the ultimate, the pTTL on that model is measured at .225 - well more than 1/5th of a second; useless for many situations. Still, better than the 1/3rd of a second that the K-3 started out at, based on the timings reported back then.
I'm not saying that the K-3 is terrific; it has lag like the rest of the bunch - and a bit more than some. Manual flash is twice as fast - roughly.
Actually the IR is a single IR event launched from an Ardunio controller , its a single instruction to fire the shutter it's not repeated this is the simplified code as sent (my real code also allows Focus IR events).
It is considerably shorter in period than any human could press a shutter in !!! so I would disagree in your "prolonged"
Also what the Kx does is irrelevant I could replace it with
any P-ttl K series or newer body and it would fire before the k3 pre flashed
void wait(unsigned int time){
unsigned long start = micros();
while(micros()-start<=time){
}
}
void high(unsigned int time, int freq, int pinLED){
int pause = (1000/freq/2)-4;
unsigned long start = micros();
while(micros()-start<=time){
digitalWrite(pinLED,HIGH);
delayMicroseconds(pause);
digitalWrite(pinLED,LOW);
delayMicroseconds(pause);
}
}
Pentax::Pentax(int pin)
{
pinMode(pin, OUTPUT);
_pin = pin;
_freq = 38;
}
void Pentax::shutterNow()
{
high(13000,_freq,_pin);
wait(3000);
for (int i=0;i<7;i++){
high(1000,_freq,_pin);
wait(1000);
};
}
The k3 has never been inconsistent and I haven't seem any reports as such maybe you could point them out to me ?
So I fail to see just what you think 1.21 has 'fixed' regards flash
1 never inconsistent so that con't be fixed
2 delay is not altered and is still present
As I send 1 fire shutter instruction it matters not where the IR was pointing or any directional etc the cameras either recieve it and re-act (as they do in the video or they do nothing.
If they react they both received the same single instruction at the same time and hence fire synchronously.
There could be some argument that the cameras may have differing time form receiving the instruction and reacting but given the hacked coding shows much reapplication between bodies this would favour the faster CPU (hence the k3)
I suspect your issue with IR is more related to you application (controller ambient conditions etc) than the technology or implementation itself as all camera IR is very very basic leaving little area for mistakes.
---------- Post added 13-06-15 at 11:04 AM ----------
Originally posted by ScooterMaxi Jim
In any event, I also feel it is important to point out that the consistency of flash output - at least on 3rd party flashes - has improved considerably. On the K-3, I would say the situation for pTTL lag and consistency has gone from totally unusable (for paid work) to a solid middling rating.
I use cactus V6's normally for action sports and aokatec P-ttl triggers for studio presentation work the K3 has been fine like this and 1.21 makes no odds neither improving or worsening
with 2 Metz 48's 1 Metz 50 2 fgz360 1 fgz 540 and 1 45CL digital all in P-ttl I've ecperienced no inconsistencies so which 3rd parties are having consistency issue on the k3 ?
overall the k3 in P-ttl has really impressed me it is the best implementation of an Penatx D-slr but I see no changes in 1.21 and don't think your seeing anything but a standard placebo response.