Projector conversion for Telecine?

[David Runier]

Just a thought. If that Eumig projector has an inching knob at the back and the frequency adjustable speed controller doesn't work, it should be possible to fit a gear wheel to the shaft and run it from an external motor. I've seen that done at a Widex "8mm Cinerama" set up with 3 projectors held in sync with external motor like that.

Great idea and brilliant work by Mattias. Thanks for all the photos, it has relieved concerns of what to do if the speed controller doesn't work and given me a lot more confidence that buying the Eumig was the right decision. I am already feeling frustrated with the thought of having to wait 6 weeks to make a start although having downloaded all the software from the links rovided by Stan I can see I'm going to be pretty busy in that time!
The lash-up using a paper clip and mouse was a great innovation, well done.😄 What is your optical set-up Mattias?

Stan - thank you for the links, I have downloaded them all plus a few plug-ins for Avisynth - now I just have to find my way around them. Your progress with the AR0230 is looking very good
And at last I've managed to track down a supplier in the UK who lists the AR0230. Progress! 😊

[Stan Jelavic]

Keep up the good work David. I am looking into the problem with the high resolution capture. Might have to have a look at the source code for arducamstill. Really weird. The arducam tech guy was also puzzled.
The source code is available here:
https://github.com/ArduCAM/MIPI_Camera/tree/master/RPI

[Mattias Norberg]

What is your optical set-up Mattias?

Hi the Led Samsung 12V MR16 GU5.3 6W LED Spotlight Light Bulb Downlight and Opal Diffusing Glass 25mm look like this









My first was DFK 23G274+TECHSPEC® Compact Fixed Focal Length lenses 35mm + 40mm extension tube here is a picture


next i did upgrade to better lens DFK 23G274+Linos mevis-C 50mm + 60mm extension tube here is a picture


and here is my latest lens upgrade APO-RODAGON D 75mm 1x f/4 and it's the best and sharpest of all the lenses i have and very easy to focus it have good deep of field even wide open aperture here is a picture of it


and my final setup look like this

[David Runier]

VERY nice. A very nice set of photos. I have a Rodagon 80mm (not the Apo sadly) that I'd like to use, but the res of your image, the size of the type and annotations in red showing each component of your set-up are difficult to read. I'd really appreciate if you could list them in order from one end.
Thanks

[Mattias Norberg]

VERY nice. A very nice set of photos. I have a Rodagon 80mm (not the Apo sadly) that I'd like to use, but the res of your image, the size of the type and annotations in red showing each component of your set-up are difficult to read. I'd really appreciate if you could list them in order from one end.
Thanks

you have the better quality here it's maybe little better https://live.staticflickr.com/5497/1...0cf4fe_o_d.jpg

left to right

1:GUS5.3 MR16 Halogen lamp/LED Bulbs Lamp Holder Base Socket
2:Samsung 12V MR16 GUS5.3 6W LED Spotlight Light Bulb Downlight
3:Edmund Optics 25mm Diameter Opal Diffusing Glass one side is milled down to 23mm
4:PEX Pipe outer diameter 32mm inner diameter 29mm
5:Extension Ring(C Mount) 5mm that fits on the 32mm PEX Pipe
6:Carl Zeiss Pentax M42 Scraw Mount Lens to C mount 16mm Film Mount Adapter
7:42mm to 52mm Stepping Step Up Filter Ring Adapter
8:Macro Coupler / Reverse Ring 43mm to 52mm
9:40.5mm to 43mm Step Up Ring Filter Adapter
10:Rodenstock APO-RODAGON D 75mm 1X f/4
11:Rodenstock Modular Focus Mount (C Mount to M39)
12:Extension tube 105mm(C Mount)
13:The Image Source Camera DFK 23G274 Sensor Size 1/1.8


if i did have a 3d printer then i do not need example the PEX Pipe and some other parts to stabilize the camera lens to the projector


i did buy Rodenstock Modular Focus Mount from ebay about 170dollar but new they are very expensive i'm sure there is cheaper alternatives for C mount to 39mm

[David Runier]

Many thanks for the higher res pic and the list of components in your set up, it will be very helpful in planning and preparing my own. I imagine that with the Apo Rodenstock and the 1/1.8" sensor you must be getting superb results. 👍

[Mattias Norberg]

Many thanks for the higher res pic and the list of components in your set up, it will be very helpful in planning and preparing my own. I imagine that with the Apo Rodenstock and the 1/1.8" sensor you must be getting superb results. 👍

the results is ok if i want better i need newer camera

a screenshot of Super 8mm test film Rodenstock APO-RODAGON D 75mm 1X f/4


https://live.staticflickr.com/3777/1...1ac1e4_o_d.jpg

[Stan Jelavic]

Got the AR0230 RPI camera working with the Hawkeye. Wrote a small python program that detects the trigger from the board and produces the frame-by-frame sequence. The images were processed by VirtualDub and Fred's option4.
https://drive.google.com/file/d/10EU...ew?usp=sharing

[David Runier]

Mattias - The Rodagon has done a good job. However, just a thought - all enlarger lenses are computed to work in one direction - small flat object to large flat reproduction. In this instance you are going the other way with a 1/1.8" sensor.
If it doesn't create mayhem with regard to adapters it might be worth trying to reverse the lens to see if it will yield a tiny increase in resolution that might result in 100% copy of the test target - on the other hand having done such a great job putting this together as it is now, you could go mad just thinking about how to reverse the lens 😖 so just pretend I didn't say anything!
Stan - nice work. You seem to have a little light creep on the left hand side - noticable in some shots where the subject is dark. Is this coming from the perforation?
David

[Stan Jelavic]

Thank you David. The light creep may be to do with the masking tape that I used around the gate as a mask. It is a bit shinny. I had a mask 3D printed but shipped it to one of my customers. Will get another one printed out in flat black. If you zoom in on the video you will notice pixel noise. Spoke to Arducam support and one of their ISP engineers told me that the noise is to do with the HDR feature. He says he will look into it and try to optimize the code for lower noise. Will let you know how that goes. Another issue is that the RPI is slow and I could get only 1 frame per 4 seconds. It may be possible to optimize that but I do not expect that it will be faster than 1 frame per 2 seconds. One of the causes is the RPI file write performance.
There is a camera from e-consystems that uses the same sensor and the test video shows pretty low noise and good HDR.
https://youtu.be/ca9fE-RKwBE

A while back I bought an RPI camera and the USB shield
https://dlscorp.com/shop/mt9p001-5-0-mp-camera-module/

It had some lens shading but not bad.
https://photos.app.goo.gl/5oGATxPF6N7EopTDA

[Mattias Norberg]

Mattias - The Rodagon has done a good job. However, just a thought - all enlarger lenses are computed to work in one direction - small flat object to large flat reproduction. In this instance you are going the other way with a 1/1.8" sensor.
If it doesn't create mayhem with regard to adapters it might be worth trying to reverse the lens to see if it will yield a tiny increase in resolution that might result in 100% copy of the test target - on the other hand having done such a great job putting this together as it is now, you could go mad just thinking about how to reverse the lens 😖 so just pretend I didn't say anything!
David

Hi ok hehe i have tested some of my lenses in reverse but do not remember if i have tested this one i have a feeling i did and it was not any better it was the same

[David Runier]

Stan
I admit that I'd much prefer using a PC to capture the feed rather than playing around with a R/Pi, and your remark concerning write speed is worrying. even 1 frame per sec would be terribly slow. Which version of the R/Pi are you using? The See3-Cam looks far more practical, but I haven't found pricing yet and I'm getting a little concerned that enthusiasm maybe taking me down a very long rabbit hole!! 🐇

[David Runier]

P.S. Where did you get the SMPTE Super 8 target from?

[Stan Jelavic]

Yes, it happens to all of us here. We get really excited about a particular solution and then run into problems after problems. The RPI speed is definitely an issue. If you follow the Wolverine thread you will see that most of us there use a PC. The cameras that we use are more expensive. Without the lens:
BUC02 $129
UX226 $300+
The AR0230 from e-consystems is listed at $149 without the lens. But you may need the lens holder so $179 with the lens that you cannot use.
The 16mm lens that we use is $105 with shipping from China.
The 12mm lens from Imagingsource is around $60 + shipping
The SMTE clips are very expensive. I
http://www.wittnercinetec.com/epages...chString=smpte
I got a small piece from one of the group members.

[David Runier]

I haven't got to grips with any of the software yet, so can I pick your brains? I know some software will allow me to flip the image both vertically and horizontaly, but do any of tem allow cropping? I'm thinking to use my M4/3 camera, but the sensor is far too big. I may be able to enlarge the S8 frame x2 but that is still just a portion of the 12x17mm M4/3 frame and will need cropping.