8mm Forum: Diy telecine focus problem

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Posted by Matt Hooper (Member # 1019) on February 18, 2012, 08:31 PM:

Hi guys,

I have been doing lots of experimenting with DIY real time, off the gate telecine this week with the help of the wonderful Martin Jones and feel like I am almost there.

Canon S-400
I have removed the std/super 8 gate sizer to allow more frame tomfit thru the gate.

Replaced the halogen lamp with a 12v LED cluster and placed some diffuser plastic in front of the LEDs, this has helped reduce glaring white patches.

I am not sure if the lights should be directed into the film gate or if it's ok to just fill the area with light, both seem to work ok.

Lenses
I have tried a 50mm F 3:8 enlarger lens and although the picture is sharp i get vignetting, I also tried a 75mm but that has to be too far away from the gate.

I found an old 16mm projector lens and revered it, all good, great focus and a nice full frame but here is my issue.

Focus, my Panasonic 3ccd camcorder only has 10x zoom and I can only seem to get good focus when zoomed out a fair bit, as soon as I try to fill the frame focus deteriated.

Does anyone have any suggestions to get sharper focus when zoomed in?

I have noticed some shaking but have a macro rail on the same piece of wood
As the projector so am going to try and put the cam on a seperate tripod and the projector on a stand but I'm pretty sure the focus is down to the cam zoom.

Any tips, ideas would be awesome.

Cheers
Matt :-)

Posted by Wayne Tuell (Member # 1689) on February 18, 2012, 10:25 PM:

Matt, do you really need a lens? The camera unit I use on my TP-66 machine mounts in lens barrel and films the gate itself.

http://youtu.be/Oy4AHmlCplM

Posted by Matt Hooper (Member # 1019) on February 28, 2012, 11:39 AM:

Hi Wayne

Thanks for your reply, I do not know any of the equipment you are using.

Please tell me the camera etc.

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