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Author Topic: Moviestuff Workprinter-HD lens reflection
Tom Fales
Junior
Posts: 8
From: McCormick, SC
Registered: Jun 2011


 - posted January 22, 2019 12:41 PM      Profile for Tom Fales   Author's Homepage   Email Tom Fales   Send New Private Message       Edit/Delete Post 
I have a Workprinter-HD that I has been using successfully for many years to capture 8mm films. However, I continue to get a weird artifact when capturing Super 8mm films (and sometimes regular 8mm) that have very low lighting (indoor shots without proper light): there seems to be a lens reflection from my Canon XHA1 camcorder projecting on the capture film. This appears as a round "light" on the capture; increasing the lighting controls makes it more obvious. I've tried an anti-reflective lens on the camcorder with no impact. Has anyone had this problem and found an answer? I've tried changing the position of the camera as well as the Workprinter also with no effect. I can get the lens image to move toward the side, top and bottom, but lose the image when I move it too far.

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Tom
MovieStuff Workprinter-HD
Intel i7 5820k 64GB
Thermaltake Level 10 GT Snow Edition
Studio 19, Avid

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Janice Glesser
Film Goddess

Posts: 3215
From: Sunnyvale, CA USA
Registered: Sep 2011


 - posted January 22, 2019 01:50 PM      Profile for Janice Glesser   Email Janice Glesser   Send New Private Message       Edit/Delete Post 
Hi Tom... Are you shooting off the mirror and condenser lens or directly off the gate?

I remember when I was using the condenser lens at times getting reflections. It depends on the external light and any light-colored objects located behind the camera. I would place a large dark-colored cloth back-drop behind me and the camera if I detected a reflection. The condenser lens is glass so no way to get away with out it reflecting objects in front of it.

This was my original setup. If you look closely you can see a reflection on the condenser lens. The reflective image will be more prominent in the capture depending on the overall lighting conditions.

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I no longer use the condenser lens, but shoot directly off the gate. I too originally used my XHA1 camcorder with the Workprinter, but it was too big to shoot off the gate. I now use the smaller Canon's like the HV40 or the newer HF20 or 200.

This was my initial off-the-gate setup. It used a Raynox macro lens on my Canon HV40 camcorder to zoom in on the gate.

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Here's a video of my current setup. In this setup I use a 16mm lens to enlarge the image off the gate:
https://youtu.be/Kc2615MSLaI

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[ January 22, 2019, 03:28 PM: Message edited by: Janice Glesser ]

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Janice

"I'm having a very good day!"
Richard Dreyfuss - Let It Ride (1989).

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Tom Fales
Junior
Posts: 8
From: McCormick, SC
Registered: Jun 2011


 - posted January 24, 2019 10:39 AM      Profile for Tom Fales   Author's Homepage   Email Tom Fales   Send New Private Message       Edit/Delete Post 
Janice
Thanks for your input. I'm shooting off the mirror - haven't had the nerve to try your approach but maybe I will . . .
What type of 16mm Keystone lens are you using? I see some used Keystone's on eBay. Does the lens simply screw into the Workprinter in place of the current lens?
I obviously already have the Blackmagic card and Cinepac Velocity HD software.
Tom

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Tom
MovieStuff Workprinter-HD
Intel i7 5820k 64GB
Thermaltake Level 10 GT Snow Edition
Studio 19, Avid

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Janice Glesser
Film Goddess

Posts: 3215
From: Sunnyvale, CA USA
Registered: Sep 2011


 - posted January 24, 2019 01:26 PM      Profile for Janice Glesser   Email Janice Glesser   Send New Private Message       Edit/Delete Post 
If you use the 16mm lens, just remove the projector lens cover and the focus lever. The lens I use is the 2" f1.6 Sunray 107. It came on a Keystone K-160 16mm projector. The lens should fit nicely into the original lens holder. If it's too loose just wrap a little electrical tape around the threads to make it more stable.

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An alternative is to use no lens on the projector but attach a Raynox DCR-250 macro lens on the camera.

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[ February 11, 2019, 09:25 AM: Message edited by: Janice Glesser ]

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Janice

"I'm having a very good day!"
Richard Dreyfuss - Let It Ride (1989).

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Nantawat Kittiwarakul
Expert Film Handler

Posts: 189
From: Rajburana, Bangkok, Thailand
Registered: Aug 2017


 - posted January 24, 2019 07:29 PM      Profile for Nantawat Kittiwarakul   Email Nantawat Kittiwarakul   Send New Private Message       Edit/Delete Post 
Well I can only confirm Janice's setup that it will DEFINITELY WORK. [Cool] Not frame-by-frame workflow,but optically identical.

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Any 16mm projection lens should work,as long as it fits into the lens barrel. [Big Grin] Although I found that the standard 50mm lens will work best. You'll have to flip the video vertically in the post however (should be no problem in any NLEs).

PS pls ignore the mess in the background. [Razz]

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Just a lone collector from a faraway land...

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Janice Glesser
Film Goddess

Posts: 3215
From: Sunnyvale, CA USA
Registered: Sep 2011


 - posted January 24, 2019 09:33 PM      Profile for Janice Glesser   Email Janice Glesser   Send New Private Message       Edit/Delete Post 
I love your camera platform Nantawat [Smile] A new use for old VHS cartridges. I'm for anything that works [Smile] Nice set up!

I was too lazy to make a camcorder plateform. I bought an adjustable mini tripod and a macro slider. Then I raised the projector by mounting it on a ClosetMaid wooden shoe rack. It works for me.

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Janice

"I'm having a very good day!"
Richard Dreyfuss - Let It Ride (1989).

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Tom Fales
Junior
Posts: 8
From: McCormick, SC
Registered: Jun 2011


 - posted January 26, 2019 10:59 AM      Profile for Tom Fales   Author's Homepage   Email Tom Fales   Send New Private Message       Edit/Delete Post 
This is very helpful. Which process seems to work the best or are they pretty much the same.
Tom

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Tom
MovieStuff Workprinter-HD
Intel i7 5820k 64GB
Thermaltake Level 10 GT Snow Edition
Studio 19, Avid

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Janice Glesser
Film Goddess

Posts: 3215
From: Sunnyvale, CA USA
Registered: Sep 2011


 - posted January 26, 2019 11:25 AM      Profile for Janice Glesser   Email Janice Glesser   Send New Private Message       Edit/Delete Post 
Pretty much the same.

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Janice

"I'm having a very good day!"
Richard Dreyfuss - Let It Ride (1989).

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Tom Fales
Junior
Posts: 8
From: McCormick, SC
Registered: Jun 2011


 - posted February 11, 2019 08:01 AM      Profile for Tom Fales   Author's Homepage   Email Tom Fales   Send New Private Message       Edit/Delete Post 
Janice - many of the K-160 projectors come with a Sunray F1.6 lens. Is there a specific reason you chose the F1.8 lens?
The F1.6 lens apparently will capture a bit more light. Any insight you can offer on this?
Also, if you were to choose a camera today would you still use the FH20 or, based on experience, would you choose something else?
Since I have a second Workprinter-HD for backup it looks like I will be taking the conversion leap . . .

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Tom
MovieStuff Workprinter-HD
Intel i7 5820k 64GB
Thermaltake Level 10 GT Snow Edition
Studio 19, Avid

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Janice Glesser
Film Goddess

Posts: 3215
From: Sunnyvale, CA USA
Registered: Sep 2011


 - posted February 11, 2019 09:24 AM      Profile for Janice Glesser   Email Janice Glesser   Send New Private Message       Edit/Delete Post 
Hi Tom...Sorry...There was a typo in my previous post...it should have read f 1.6 for the Sunray lens - you can see that in the photo. I'll correct the post.

As far as my camcorders...I'm sure any of the newer model Canon's that have manual adjustments should work fine. I've had all my Canon's for a long time and they all work in my setup so haven't needed to look at other models. I like the HF20 because the remote works on the viewer side instead of the front. This makes it easier to make function adjustments like focus and exposure and zooming on the fly quicker.

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Janice

"I'm having a very good day!"
Richard Dreyfuss - Let It Ride (1989).

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Nantawat Kittiwarakul
Expert Film Handler

Posts: 189
From: Rajburana, Bangkok, Thailand
Registered: Aug 2017


 - posted February 11, 2019 07:44 PM      Profile for Nantawat Kittiwarakul   Email Nantawat Kittiwarakul   Send New Private Message       Edit/Delete Post 
Any camcorder with FULL MANUAL CONTROL will do. That's the reason I retain my good'ole Panasonic GS-400 for std. def work. [Wink]
For HD transfer I use Canon HF-S 20,great image quality with some manual control (although not as extensive as panny's). The major letdown is that it will revert to automatic settings every power off>on - necessary to readjust everything at every power cycle,not so convenient [Frown] (considering to replace it with something more decent).

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Just a lone collector from a faraway land...

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