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Hi!
Just took some measurements related to shooting full-spheres using a 15mm fisheye and a 35mm for higher resolutions like this one: http://s341703522.online.de/Lichthalle.html
Shooting a full sphere using the 15mm fisheye on a 5D2 takes exactly 38,6 seconds from hitting "start". Using "mirror up" it takes 49,4 seconds for the full sphere. That means about 112MPx.
Shooting a full sphere using a 35mm on the 5D2 takes exactly 3:21 min. Using "mirror-up" it takes 4:42 min. That means around 700MPx.
Including about 1sec (which might be too much) to let the camera calm down after moving and also with "mirror-up" there´s another 1 second to avoid vibrations from he mirror before releasing the shutter. So 2 sec. completely at each position might be too much and might be halfed - but better loose a second instead of loosing the pano due to blurry images . . . 
So i definitely prefer the "longer" way. It´s still fast enough i mean.
best, Klaus
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When mirror lock up is used with papymerlin, the mirror is triggered at the start of the stabilization time, so mirror damping and stabilization happen at the same time. Is there a reason you gave time for stabilization and then further for mirror damping?
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wjh31 wrote:
When mirror lock up is used with papymerlin, the mirror is triggered at the start of the stabilization time, so mirror damping and stabilization happen at the same time. Is there a reason you gave time for stabilization and then further for mirror damping?
Well - it´s two different things: the movement is fast - high torque - and needs to stopped. That causes new movements which needs stabilization-time. Then two things can be done: 1) release the shutter after stabilization or 2) lock the mirror and release the shutter after that. Moving up the mirror causes micro-vibrations inside the camera and they interact with the head-system. So here another wait is needed to make sure the setup can vibrate neither caused by moving/stop the head nor by locking the mirror before releasing the shutter.
That´s another reason to build te head sturdy - it helps damping vibrations. Some more things help here too. That´s why the head is heavy - built like a tank.
As i said - maybe we can save half a second or maybe even a second at each shot when locking the mirror by triggering the lock-up during the head´s stabilization time.
Update: i just discussed it with Josef - he´ll do a mirror-lock during the stabilization-time and the shutter release at the end of the stabilization time and we´ll see how it works! Might save us a second. Thanks for the clue!
best, Klaus
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Hi Klaus,
is there any vague timechedule for Josef's new head when we can expect the first version on market?
(would be great if Josef could place some info on T&C homepage ;-)
I def. want to opt in...
Georg
Last edited by gkaefer (2011-07-25 19:20:12)
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gkaefer wrote:
Hi Klaus,
is there any vague timechedule for Josef's new head when we can expect the first version on market?
(would be great if Josef could place some info on T&C homepage ;-)
I def. want to opt in...
Georg
Hi Georg!
You have mail
The latest information is: the manufacuters of the parts are still calculating ths costs. We think it will be September to launch the head. Josef integrated motion-sensors which realize any movement after spinning or wind or so and wait till all is ready to shoot.
Also they allow to use the TC´s display for levelling the head visually. Great stuff! He also implemented an additional one-shot-mode: for each exposure you have to push the TC seperately. That´s good if you use focus-stacking or shoot in crowded place - the head writes positioning files nevertheless. So you can use it like a manual head but have the xml.
best, Klaus
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