Wolverine-Hawkeye Telecine

[Stan Jelavic]

Thank you Kamel. Actually the AR0230 does exhibit some pixel noise. Not sure what it is but maybe the sharpness setting. Sent a message to the arducam support. Hope they can clue me in to what the cause is.


The transport mechanism is complicated because it normally includes the gate. With this approach we do not need that gate. The Wolverine gate is used for image capture and this is just a "tractor as David put it" pulling the film. Here is a similar approach but we could have multiple claws in a row to reduce the chance of getting stuck due to bad perforations.
https://www.mets-telecinesystem.co.uk/film-transport/
This unit could be mounted where the pulleys are right now.

[David Brown]

Quick question for Stan. Can the Fan be run continuously, or does it need a switch for startup problems. That was true on version 7.
I could use another switch.

The AR0230 has some artifacts, I thought they came from capture or codec compression. It is a large and colorful image.

METS Telecine is impressive. He even made his own milling bit to cut the gate!!! Wow, I must take a minute to read thru his web site later.

I was thinking that projector claws are really thin and pointy. Look at the Wolverine claw. Sprocket hole tears I remember, are a thin cut in the bottom center. Easy enough to run the film upside down, but not if the tear cuts all the way thru to the next hole. This is how I imagine Kamel's film is torn.

This picture was cut with a knife for testing. Claw tears are not usually this long.



But what if the claw could be the same size and shape as the perforation? It could taper to a point from top to bottom and left to right. When it is fully inserted it could still hold the corners. Maybe just adding a "cap" to the Wolverine claw?

[Stan Jelavic]

Hi David. Will get back to you on capstan tomorrow. Spent some time playing with the RPI and forgot about the capstan.
The fan switch is there because the kick start cct sometimes does not start up properly with the fan on. You can try powering up with the fan on multiple times and if it is solid you can bypass the switch. I will look into it. Maybe lowering the value of R9 might do the trick.
Arducam support just sent me an email stating that the sensor is noisy due to HDR. This is the guy that did all of the sw which is pretty cool. He also did the ISP code (Image Signal Processor). He will look into it and try to cut the noise down. I thought that the ISP was done by the sensor manufacturer but actually it is done by the board supplier. So this puts a twist to my evaluation i.e. e-consystems board will not be the same as Arducam.
Maybe I will return Arducam cameras and get the e-con one.
The e-consystems demo looks pretty good and low noise as far as I can tell:
https://youtu.be/ca9fE-RKwBE


The cap is a good thought.

[David Brown]

It's ok Stan, looks like you have a few plates spinning.



I'm modifying Kamel's switch plate. This rocker switch for the alarm is larger than I like, but it will fit.

I should be able to test the fan by leaving it on, I think.

E-con camera promo video looks good at 1280. Hope it works as well in your test.

[Stan Jelavic]

The plates are stationary but my head is spinning David.

[Bruce Davis]

Hi all, in my opinion the "16mm-lens-hdr-mask-comp.avi" Stan posted August 2020 is better than the current AR0230 camera HDR video.
Lots of sharpening making images noisy, colours seem good, overall for a camera this price the results are good, not sure why they added so much sharpening, not good for post processing. The second image is the AR0230 camera.

[Stan Jelavic]

Good work Bruce. Definitely looks like sharpening used. The person doing the ISP code is looking into that. Hopefully he can come up with some fix. One issue though. Some of us do not plan to use this camera but go perhaps go with the e-consystems. I thought that this would give us some clues on the performance of the e-consystems camera since it is similar sensor but now I am not sure. The lens shading looks good but the shading tables may be in the ISP so the e-consystems may have it different and then we are back at square one.

[Kamel Ikhlef]

Aha! Well seen for the plates, Stan ...

Bruce, I hadn't noticed the video sharpening and enhancement on AR0230.
All this hard work to improve our system is very encouraging.

[Stan Jelavic]

Updated the user manual UX226 ordering info:
https://drive.google.com/file/d/14qe...ew?usp=sharing

[David Brown]

Thanks for manual update. V11, it's been a while since I read it. Lot of things I had forgotten, so I'm now keeping the fan, it looks to be worth having for possible startup problems.

Hope that's one plate that can fall!

[Stan Jelavic]

Thank you David

[Stan Jelavic]

Version V12 of the manual is out. Added a note on lens holder extension.
https://github.com/vintagefilmography/Hawkeye

[Stan Jelavic]

Contrast improvement with the gate mask.

[Stan Jelavic]

Since the lowest resolution I can use without clipping the image with this 16mm x 1/2" lens is 2048x1536.

I just tested the 16mm with the BUC02 camera and 20mm spacers. Got the following cropped resolutions:

S8 1820x1300
R8 1580x1140

The board mounting holes have to be elongated. Will measure by how much and add that change to the V13 including the USB3 interconnect.
The adjustment is needed only once and both the S8 and R8 fit OK. S8 is pretty tight.
On another note, the gate mask works good for both formats.

Checked the capstan. Not sure David if you have the latest code. The monitor function works OK for slow and fast speed.
I extended the motor time for the active capstan and it works from the 3rd position but my problem is that the set screws are not tight enough and the motor shaft spins.
The project is:
freq_gen_12_hdr_turbo

And you can download it from here:
https://drive.google.com/drive/folde...V1?usp=sharing

[David Brown]

That's good work Stan, anyone using this new hardware combination will never have know the difficulty of drilling out the mounting holes!

I remember having missing files before flashing the msp430, something got mixed up. I'm going to re-flash, I found 5 files that are different comparing what I used against the files you just posted.

.........thought I had closed that case for the last time.....




I'm now plodding thru the avisynth / virtualdub installation. I'm running out of room on C: and don't install anything there unless forced. That might be why nothing works together.

I think this is something worth checking out. It's a windows gui, and avisynth works thru it.

https://sourceforge.net/projects/avseditplus/

https://www.youtube.com/watch?v=VWxd6YBTZZU