Wireless remote focus control? at DVinfo.net

Go Back   DV Info Net > Most Recent Additions... > Micro / POV Camera Systems

Micro / POV Camera Systems
Covering the GoPro HERO and other small Point-Of-View video cameras.


Reply
 
Thread Tools Search this Thread
Old August 27th, 2011, 07:39 AM   #1
Regular Crew
 
Join Date: Aug 2009
Location: Montpellier, France
Posts: 81
Wireless remote focus control?

Hi,
Long story short, we're putting together a system for special POV shots.
It's basically a camera mounted in a Pan/tilt capable cage attached to a drone.
The system is entirely controlled from the ground by a team of two (one controls the drone movements, the other the camera movements... Yes, that usually prevents crashing :-)
For creative purposes, we'd like a semi shallow DOF look that the current typical POV cameras can't give us. Also, and a result of the semi shallow DOF look we're after, we'll need to be able to control focusing from the ground.
We own several potential candidates cameras we could use (D3s D7000 D5100) for this, but are ready to invest in additional/different material if needs be.

Does anyone have any suggestion with regards to what combination of equipment would allow that?
Thanx a lot...

Mikael
Mikael Couderc is offline   Reply With Quote
Old August 27th, 2011, 11:29 AM   #2
Inner Circle
 
Join Date: Feb 2004
Location: switzerland
Posts: 2,131
Re: Wireless remote focus control?

if you got all this remote control stuff, you just add a servo to control focus.
obviously the best way would be to get a remote video feed from the plane (but you probably already got it).
Giroud Francois is offline   Reply With Quote
Old August 27th, 2011, 02:32 PM   #3
Inner Circle
 
Join Date: Feb 2006
Location: Belfast, UK
Posts: 4,121
Re: Wireless remote focus control?

You could use a radio controlled focus system for a Steadicam. There are a number of options available, although the radio frequencies and weight may be a consideration, they're also not that cheap..

I'm not sure how much shallow DOF you'll get from a drone, given that they tend to fly at a reasonable height and this DOF effect tends to work best at closer distances. Then, if you manage a good shallow DOF, it can be a nightmare keeping focus with moving cameras. I'd also check out the vibration as another possible issue that could arise with using CMOS sensor DSLR cameras on a drone.
Brian Drysdale is offline   Reply With Quote
Old August 28th, 2011, 05:03 AM   #4
Regular Crew
 
Join Date: Aug 2009
Location: Montpellier, France
Posts: 81
Re: Wireless remote focus control?

''You could use a radio controlled focus system for a Steadicam. There are a number of options available, although the radio frequencies and weight may be a consideration, they're also not that cheap.. ''

That's what I'm heading towards indeed.
RAdio frequencies? As far as I understand, they all offer switchable frequencies that shouldn't interfere with either the drone controls frequency or the video ones.
What potential issue do you think could arise?

"I'd also check out the vibration as another possible issue that could arise with using CMOS sensor DSLR cameras on a drone."

Hmmm... I had assumed VR would take care of that, or a good plugin would just as well. What CMOS-specific related issue do you foresee?

And BTW, thanx, your help is very much appreciated!

edit: your input would also be very valuable in a related thread:
Battery operated HD wireless transmitter suggestion
Mikael Couderc is offline   Reply With Quote
Old August 28th, 2011, 06:54 AM   #5
Inner Circle
 
Join Date: Feb 2006
Location: Belfast, UK
Posts: 4,121
Re: Wireless remote focus control?

The jello cam effect accentuated by vibration, I expect it's something that can be tested before you finally select a camera.. Although, I wouldn't make an assumption without testing it.

Sorry, I don't know anything about that transmitter.
Brian Drysdale is offline   Reply
Reply

DV Info Net refers all where-to-buy and where-to-rent questions exclusively to these trusted full line dealers and rental houses...

Professional Video
(800) 833-4801
Portland, OR

B&H Photo Video
(866) 521-7381
New York, NY

Z.G.C.
(973) 335-4460
Mountain Lakes, NJ

Abel Cine Tech
(888) 700-4416
N.Y. NY & L.A. CA

Precision Camera
(800) 677-1023
Austin, TX

DV Info Net also encourages you to support local businesses and buy from an authorized dealer in your neighborhood.
  You are here: DV Info Net > Most Recent Additions... > Micro / POV Camera Systems

Thread Tools Search this Thread
Search this Thread:

Advanced Search

 



Google
 

All times are GMT -6. The time now is 02:05 AM.


DV Info Net -- Real Names, Real People, Real Info!
1998-2017 The Digital Video Information Network