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Aerial Photography and Video > Digital Eyepiece for SLR
 
 
MPA
Elite Veteran
Location: Australia

The standard 1/4" ro 1/3" CCD min camera uses 3.6mm lens standard.
I tried using it via the SLR viewfinder to get the actually camera view without paralax issues and to see the auto settings in the viewfinder.

The 3.6mm lens has 90deg angle of view which makes half the screen black border and the viewfinder too small.

Ive found a lens to suit.
Creative Web II cam had a 4.8mm lens that is perfect.
Riiiip!!!
File file
Hmmmm

Was a little wide to begin with but I pulled the lens closest to the CCD in the 4.4mm lens tube leaving the black apeture ring and 3 lenses forward of that and that reduced to to perfect size.

The viewfinder now takes up nearly the whole TV screen via the mini camera with enough around the edges to see camera speed / aperture readings alongside viewfinder.
05-03-2003 Over year old.
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kima
Senior Heliman
Location: Wellington, New Zealand

Hi there,

If you do not mind can you give me the details of the lens and where i can purchase one. as the ccd camere i will be useing is 1/4" 3.8mm wide angle lense and i was considering setting it up so that it would look through the view finder but as there is too much black the camera over exposes the image. So i was going to set it up along side the SLR camera but this would not get you a true veiw.

So this would be greate if you have found a lense that works.

Cheers Kima
05-03-2003 Over year old.
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MPA
Elite Veteran
Location: Australia

kima

I had a 3.6mm lens
I used a 4.8mm lens I got out of a Creative WebCam II, it was on old LPT Webcam throw away job.

It has a small plastic lens at the CCD end I removed to get the CCD sensor closer to the lens and get proper focus.

There was 4 lenses in it from the front, 3 glass ones, a black apeture hole dicsc then a plastic lens, I removed the plastic one.

The CCD sensor in the 1/4" cam has a block of glass stuck on top so removing the plastic one out of the other lens allowed me to get it close enough to the CCD to get focus.

You can buy lenses for the camera you get most likely, but theres nothing like recycling something and doing the job at no cost with waht you may already have around..

I just had to reduce the size of the lens housing to fit into the existing mini camera case, the old lens and its housing screwed out of the body to fit the 4.8mm lens tube which was plastic not metal like the 3.6mm lens.

For me to get another lens for the 1/4" ccd than the 3.6mm I use Id have to order it overseas.
The 4.8mm does the job, I think larger mm lens and you may not have room for the veiwfinder elactronic indicators in a tighter angle shooting through the eyepeice.

I am aiming it through a Canon EOS5 I just need to mount it to the box for that and make a few mounts for other SLR's used on it.
05-03-2003 Over year old.
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Aerial Photography and Video > Digital Eyepiece for SLR
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