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Home✈️Aircraft🚁HelicopterAerial Photography and Video › following up on aambrose's question about the Rebel XTi...
05-24-2007 08:27 AM  13 years ago
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larryj1

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Ashtabula, Ohio, USA

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following up on aambrose's question about the Rebel XTi...
Those of you using this camera with a video downlink, what is your choice of downlink system, and what do you see as the pros and cons?

Thanks,

Larry
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05-24-2007 02:01 PM  13 years ago
aambrose

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Pana, IL

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Larry,
You couldve put this in my original post. No biggie.

Tony
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05-25-2007 04:03 PM  13 years ago
birdseye

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Fort Worth, Texas, U.S.A.

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I use a cased board camera looking through the viewfinder. I made an L bracket that secures in the hotshoe like a flash with the boardcam double sticky taped to it. A rubber grommet mounted on the front of the lens serves as a light seal and also firms up the mounting. You can choose different focal length boardcam lenses that gives you the view of the viewfinder you like.

For precise framing, I personally like to be able to see the entire viewfinder with all the shooting data displayed at the bottom of the picture, but you can also choose a slightly longer focal length lens to slightly crop the viewfinder view but gives you a better view of the center of the picture frame.

Hope that makes sense,

Mike
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05-25-2007 04:50 PM  13 years ago
Jbrown

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Land O Lakes, Florida

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I looking to do the same thing with my XTI. What material did you use to construct the L bracket with? I would think metal would short something out in the shoe.
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05-25-2007 05:11 PM  13 years ago
JWatson

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Mustang, OK

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On my D70s I used the KX-161 ccd camera inside a electronics enclosure box, with an alum tongue that slips into the hot shoe. I simply epoxied a small square of phenolic to isolate the Alum. from the contacts.

Hope that helps some,

Jarrett W.
Jarrett Watson
http://jarrettrc.wordpress.com/
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05-25-2007 07:00 PM  13 years ago
birdseye

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Fort Worth, Texas, U.S.A.

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I used 7075 aluminum but 2024 would work even better. The electrical contacts on the camera are slightly recessed so they don't make contact. I hold the whole thing in place with a precision ground pin held in by velcro for easy removal.

The cased version of the boardcam eliminates the need to build an enclosure so its a bit more compact.
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05-26-2007 01:59 AM  13 years ago
larryj1

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Ashtabula, Ohio, USA

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Mike, could you be a little more specific, if you don't mind... what make & model cased camera (and focal length) do you use, especially to view the data? Also, what particular downlink system, and what do you use for a monitor? If 2.4GHz, I take it you don't use a Spektrum (or other 2.4) radio system, do you?

Thanks to you and everyone for your advice.

Larry
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05-28-2007 04:40 PM  13 years ago
birdseye

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Fort Worth, Texas, U.S.A.

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I use Blackwidow AV's cased KX131 with custom built video and power cables. As far as focal length, I bought mine with a 90deg lens but this was WAY TOO WIDE! At that length the viewfinder is just a tiny speck on the video screen. Luckily I have a local spy shop that stocks a good selection of lenses for this camera and they let me try a full range of lengths. Sorry but I don't know the length of the lens that I decided was ideal, but suspect it might be 30 deg. I did email Bill at BWAV and he said this on the subject:

"I have many clients who like to use my KX131 camera with 19 degree lense on the Canon Rebel. This fills the screen, but also cuts off a bit of the image. The 30 degree lense shows the whole frame, but it 'wastes' a bit of the frame with a black bar around the image. It is a matter of personal preference really."

Straight from the source.

Hope that helps,

Mike
DFWskyCam.com
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