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-   -   Letus Image flipping developement (https://www.dvinfo.net/forum/alternative-imaging-methods/55882-letus-image-flipping-developement.html)

Leo Mandy December 20th, 2005 06:47 AM

Ok, makes sense. Thanks Quyen. Is the drilling going to be a delicate operation, possibly screwing up the device? I am pretty handy, but I don't wnat to chance something if I decide to go for it!

Jelle Poupaert December 20th, 2005 12:53 PM

Just a thougth, and I might be wrong, but for users with a limited budget, won't buying an LCD screen to watch the flipped image in the end be a cheaper solution?
I've seen 6" LCD screens on ebay for $100-150...

Wayne Kinney December 20th, 2005 01:05 PM

Jelle,
The image flipper also solves the headache involved in post.

Tony Tibbetts December 20th, 2005 07:23 PM

Yes it is quite a headache, I very curious about Quyens new adapter kit. When will we see new footage from the flipper adapter?

Michael Maier December 21st, 2005 09:15 AM

Quote:

Originally Posted by Wayne Kinney
Jelle,
The image flipper also solves the headache involved in post.

Yeah, but I'm afraid it may also introduce distortion and extra light loss.
Is it really worth it in the end?

Craig Bellaire December 21st, 2005 09:41 AM

As for me
 
Well as for me. I would love to have the add on... BUT is it worth it...
My camera is the PDX10 and works perfect with just the LetusA. I had such a hard time with the zooming in on the GG with everything I tried and I even had the manual to the Micro35 and it just didn't work for me. Also with 1/4.7 chips an extra 1.5-2 stops is a lot... So I might just keep what I have and not do the Add-on..

Flip and deinterlace with V-Dub and it's over... I'll use a mirror to flip the image on the LCD while shooting...

Though I will say the work placed into this Letus Project is incredible and finally someone has flipped the image... Good Job..

Greg Bates December 21st, 2005 09:55 AM

Gimme the light loss, and if its too bad throw in a Beattie screen. But to for go flipping in post i'll make sure I have adequate lighting.

Ken Lamug December 21st, 2005 11:26 AM

Can't wait until Quyen comes out with a flipped letus in a single barrel.

Dennis Wood December 21st, 2005 01:10 PM

Greg, I don't think a moving Beattie would work due to the fresnel lens built into it. You need the diffusion part of the screen minus the fresnel treatment.

Greg Bates December 21st, 2005 04:51 PM

aahhh....yeaahhh...good point:)

Maheel Perera December 21st, 2005 08:45 PM

Quyen

"With the image flipping the light loss is 1.5 stops"

Was the complete unit loses 1.5 stops, or the flipping part only, loses that much of light.

Quyen Le December 21st, 2005 10:04 PM

When I said 1.5 stop, it's light loss for the whole unit with GG in place. Thanks.

Quyen

Bob Hart December 21st, 2005 10:45 PM

Bob Hart
 
Quyen.

Just a thought.

At one stage, I was contemplating publishing my erecting (image flipping) device, a much larger and clunkier design using a CD size disk, but being a lesser mortal than yourself, was frightened off by the possibility of being nailed for patent infringement.

My intention was to make drawing files and print them to .pdf files which work on Windows, Mac and Linux. Then they could be printed off by the end-user onto sticky labels to be used as cut-through and drill-through patterns, then pulled off afterwards. Alternatviely the printed labels could be supplied to the end user.

Many printers these days are sufficiently accurate to make 1:1 patterns and it is a method I have already used with my own Agus designs. Two such are Canon BJC-7100 and the excellent Lexmark Optra S1250 and related product family.

You may be able to assist your end users by providing patterns to stick onto their existing devices to accurately mark the drillholes.

Providing they make accurate pilot holes and use depth stops on the drill bits and maybe a little grease or margarine on the bits to catch the dust and chips, my guess is the average home-builder capable or working to the thickness of a ballpoint pen line should not have a problem.

With regard GGs coming apart in transit, I suggest you might examine using two adhesives, one a soft silicone to dampen vibration, to be laid along outer edges and the main fixer being UV curable adhesive where there is face contact between the gg and the frame.

No doubt you have already thought of it but here it is anyway. After making your gg's, if they are glass, dress the outer edges to smooth off the pits and chips and chamfer the edge corners. This should eliminate some stress risers which might otherwise contribute to the glass cracking.

I have used common water clean-up white bathroom sealer for fixing the disk to hub - not relevent in your application - and pin spots of Loctite 358 UV curing adhesive. Should you decide to alter your design to glueing your two prisms together, the Loctite should also work.

Just a few thoughts.

Leo Mandy December 22nd, 2005 06:49 AM

Well put Bob, bravo

Michael Maier December 26th, 2005 06:00 AM

Has anybody got their new Letus35 with flipping feature and have any comments on the image and built quality? Does it still have the problem with dust and specs coming from the cheap plastic parts? Is it still made on plastic parts inside? How is the image quality with the prism system, any noticeable extra distortion and aberrations?
It would be great to see some footage.


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