Two Canon HV20/HV30's? at DVinfo.net

Mike Thomann · April 8th, 2008, 10:28 PM

With newer television sets and projectors becoming fully 3D capable, I'm thinking that 3D is approaching faster than we realize, and it's making me really consider getting a second HV20 or selling my HV20 and getting two HV30's to start getting into this now. I've done tons of reading up and it just seems all too cheap and easy with such a configuration to be believable. Does anyone here have any insight as to whether setting up two HV20/30's for stereoscopic video is actually more than just an intriguing waste of time?

Eric Deren · April 9th, 2008, 01:17 AM

Quote:

Originally Posted by Mike Thomann

Does anyone here have any insight as to whether setting up two HV20/30's for stereoscopic video is actually more than just an intriguing waste of time?

I can *officially* confirm that setting up two cameras for stereoscopic video is actually more than just an intriguing waste of time.

:-)

-Eric

Mike Thomann · April 9th, 2008, 12:21 PM

Thanks Eric. I was just about to upgrade to the EX1 over the HV20 when the topic of streoscopic 3D came up. Playing back 1080 footage on a 1080 TV from a single HV20 has been stunning for anyone that I've showed it to and the EX1 offers an even better image than the HV20. Since I only have resources for either the EX1 or two HV30's I'm left having to consider which would offer the greater visual impact in the end. If we consider that visual impact is related to the amount and quality of visual information produced and that the EX1 can produce a higher level of visual information over the HV30, it seems reasonable that two HV30's has the potential to easily out-do the EX1. The EX1 resolves 1000 lines of resolution and the HV30 resolves around 800. Would it stand to reason that two HV30's would produce a higher perception of realism over the EX1? With the EX1, both eyes see the same 1000 lines, whereas with two HV30's, each eye sees two separate 800 lines and you should perceive nearly 1600 lines. Additionally, the two HV30's would produce their 800 lines from two angles from nearly as spacial as our eyes. Two HV30's would cost less than a third of an EX1. Sure there are additional costs for both, but those additional costs seem relatively the same. Sorry about the extensive consideration, but these are such totally different approaches and if I delve into one, I wouldn't be able to switch for another year. I also like the fact that with two HV30's you still have the option to record in 2D with an extra camera to spare.

Mike Thomann · April 9th, 2008, 10:54 PM

It's official - two HV30's in stereoscopic is a whole entire new league over any single 2D camera! Period. There is NO comparison. It's simply astounding. This will be perfect for the upcoming Mitsubiti LaserTV with dual-channel 1080p 3D input and active 3D glasses. Time to look for a low compression full 1920x1080p30 synched dual-channel capture solution. Maybe two of those little Cineform HDMI video capture modules would do the trick, if they could have a synch function.

BTW I found a lot of useful 3D info at http://www.anachrome.com including their use of the HV20's as well.

Christo Aaron · June 25th, 2008, 09:06 AM

Hello Mike,
If you have the HV-30 and are shooting stereo, could you tell me if that camera has built in LANC support? To use something like this; http://www.digi-dat.de/produkte/inde...tml#stefraLANC
Thanks,
Chris

Mike Thomann · June 25th, 2008, 12:58 PM

I haven't had the time to pursue this further, but the HV30's do not have LANC control. You can use an IR remote supplied with the cameras to start and stop them both simultaneously.

Prech Marton · July 2nd, 2008, 12:33 AM

i have a setup: a hv10 and a hv20 side by side.
the shape isnt the same, so i have to make a special rig, but
the optics, field of view is the same, so it works for 3D ;-)

i have also some anaglyph photo on my site.
i like to hear your comment!

Anmol Mishra · July 15th, 2008, 03:46 AM

Is anyone aware of 3D glasses into which we can plug the RCA output from the 2 3D HV20's ? This would provide a good view of what is being shot...

Zack Birlew · July 23rd, 2008, 10:06 AM

Well, that would be nice but the only 3D glasses I've seen have only one video input. You would think since it's two small screens in one unit that each of them would have their own video input but sadly, that's not the case.

Anmol Mishra · July 23rd, 2008, 06:11 PM

Hmm. I wonder what could be used as a 3D viewfinder then ? Its a missing link so far..

Mike Thomann · July 28th, 2008, 11:37 AM

If only the two cams could be placed close enough to use their rear viewfinders. HV10s should do it.

Prech Marton · July 28th, 2008, 11:59 AM

Yes' HV10's do it! :)

Anmol Mishra · July 28th, 2008, 07:51 PM

It is discontinued but I'm hunting for it.

http://www.ledametrix.com/lcdsync/

The circuit is here..
http://www.ledametrix.com/syncshep/index.html

Adriano Apefos · January 24th, 2010, 10:26 AM

there is a way to sync camcorders without lanc.

point both camcorders to a crt analog tv or monitor

increase the shutter speed

the image in the camcorder screen will have a bright area and a dark area from the crt tv/moniotr

both camcorders must show the bright area in the same vertical position.

keep one camcorder turned on

turn on / shutt down the second camcorder until you get both showing the bright area from the crt tv/moniotr in the same vertical position

so adjust shutter speed as you want

3dtv.at - Camera Sync Tester User Guide

April 8th, 2008, 10:28 PM	#1
Mike Thomann Regular Crew Join Date: May 2007 Location: Amherst, NY Posts: 100	Two Canon HV20/HV30's? With newer television sets and projectors becoming fully 3D capable, I'm thinking that 3D is approaching faster than we realize, and it's making me really consider getting a second HV20 or selling my HV20 and getting two HV30's to start getting into this now. I've done tons of reading up and it just seems all too cheap and easy with such a configuration to be believable. Does anyone here have any insight as to whether setting up two HV20/30's for stereoscopic video is actually more than just an intriguing waste of time?

June 25th, 2008, 09:06 AM	#5
Christo Aaron Regular Crew Join Date: Nov 2005 Location: East Side Cleveland Posts: 68	HV-30 LANC Support Hello Mike, If you have the HV-30 and are shooting stereo, could you tell me if that camera has built in LANC support? To use something like this; http://www.digi-dat.de/produkte/inde...tml#stefraLANC Thanks, Chris

July 2nd, 2008, 12:33 AM	#7
Prech Marton Major Player Join Date: May 2004 Location: hungary Posts: 462	i have a setup: a hv10 and a hv20 side by side. the shape isnt the same, so i have to make a special rig, but the optics, field of view is the same, so it works for 3D ;-) i have also some anaglyph photo on my site. i like to hear your comment! __________________ Relaxing clips with waterfalls and music, 3D photos, 3D videos: www.3d-video.hu

July 15th, 2008, 03:46 AM	#8
Anmol Mishra Major Player Join Date: Jun 2007 Location: Sydney Australia Posts: 401	3D viewfinder glasses Is anyone aware of 3D glasses into which we can plug the RCA output from the 2 3D HV20's ? This would provide a good view of what is being shot...

July 23rd, 2008, 06:11 PM	#10
Anmol Mishra Major Player Join Date: Jun 2007 Location: Sydney Australia Posts: 401	3D Viewfinder Hmm. I wonder what could be used as a 3D viewfinder then ? Its a missing link so far..

April 9th, 2008, 12:21 PM	#3
Mike Thomann Regular Crew Join Date: May 2007 Location: Amherst, NY Posts: 100	Thanks Eric. I was just about to upgrade to the EX1 over the HV20 when the topic of streoscopic 3D came up. Playing back 1080 footage on a 1080 TV from a single HV20 has been stunning for anyone that I've showed it to and the EX1 offers an even better image than the HV20. Since I only have resources for either the EX1 or two HV30's I'm left having to consider which would offer the greater visual impact in the end. If we consider that visual impact is related to the amount and quality of visual information produced and that the EX1 can produce a higher level of visual information over the HV30, it seems reasonable that two HV30's has the potential to easily out-do the EX1. The EX1 resolves 1000 lines of resolution and the HV30 resolves around 800. Would it stand to reason that two HV30's would produce a higher perception of realism over the EX1? With the EX1, both eyes see the same 1000 lines, whereas with two HV30's, each eye sees two separate 800 lines and you should perceive nearly 1600 lines. Additionally, the two HV30's would produce their 800 lines from two angles from nearly as spacial as our eyes. Two HV30's would cost less than a third of an EX1. Sure there are additional costs for both, but those additional costs seem relatively the same. Sorry about the extensive consideration, but these are such totally different approaches and if I delve into one, I wouldn't be able to switch for another year. I also like the fact that with two HV30's you still have the option to record in 2D with an extra camera to spare.

April 9th, 2008, 10:54 PM	#4
Mike Thomann Regular Crew Join Date: May 2007 Location: Amherst, NY Posts: 100	It's official - two HV30's in stereoscopic is a whole entire new league over any single 2D camera! Period. There is NO comparison. It's simply astounding. This will be perfect for the upcoming Mitsubiti LaserTV with dual-channel 1080p 3D input and active 3D glasses. Time to look for a low compression full 1920x1080p30 synched dual-channel capture solution. Maybe two of those little Cineform HDMI video capture modules would do the trick, if they could have a synch function. BTW I found a lot of useful 3D info at http://www.anachrome.com including their use of the HV20's as well.

June 25th, 2008, 12:58 PM	#6
Mike Thomann Regular Crew Join Date: May 2007 Location: Amherst, NY Posts: 100	I haven't had the time to pursue this further, but the HV30's do not have LANC control. You can use an IR remote supplied with the cameras to start and stop them both simultaneously.

July 23rd, 2008, 10:06 AM	#9
Zack Birlew Major Player Join Date: Sep 2003 Location: Las Vegas, NV Posts: 613	Well, that would be nice but the only 3D glasses I've seen have only one video input. You would think since it's two small screens in one unit that each of them would have their own video input but sadly, that's not the case.

July 28th, 2008, 11:37 AM	#11
Mike Thomann Regular Crew Join Date: May 2007 Location: Amherst, NY Posts: 100	If only the two cams could be placed close enough to use their rear viewfinders. HV10s should do it.

July 28th, 2008, 11:59 AM	#12
Prech Marton Major Player Join Date: May 2004 Location: hungary Posts: 462	Yes' HV10's do it! :) __________________ Relaxing clips with waterfalls and music, 3D photos, 3D videos: www.3d-video.hu

July 28th, 2008, 07:51 PM	#13
Anmol Mishra Major Player Join Date: Jun 2007 Location: Sydney Australia Posts: 401	Found a sync comparator It is discontinued but I'm hunting for it. http://www.ledametrix.com/lcdsync/ The circuit is here.. http://www.ledametrix.com/syncshep/index.html

January 24th, 2010, 10:26 AM	#14
Adriano Apefos Regular Crew Join Date: Jun 2007 Location: Belo Horizonte BRAZIL Posts: 154	sync with a crt monitor there is a way to sync camcorders without lanc. point both camcorders to a crt analog tv or monitor increase the shutter speed the image in the camcorder screen will have a bright area and a dark area from the crt tv/moniotr both camcorders must show the bright area in the same vertical position. keep one camcorder turned on turn on / shutt down the second camcorder until you get both showing the bright area from the crt tv/moniotr in the same vertical position so adjust shutter speed as you want 3dtv.at - Camera Sync Tester User Guide