Letus Economy & HV20 rig at DVinfo.net

Robert Batta · January 12th, 2008, 11:21 AM

Hi all,

This is my new Letus Economy and Canon HV20 rig

demo footage coming soon...

Bob Hart · January 12th, 2008, 09:06 PM

That is one cruelbad but effective positive retention system you have there with that hose clip.

Longterm, I would would move it back over the flip enclosure directly above the support pillar as you are presently imposing a downward bending stress on the front tube to flip enclosure shoulder junction and upwards on the rear shoulder junction and the camera itself.

Over time this will stretch the screwholes and possibly tear them through if you happen to give the appliance a good clout during agile work or in transport.

Robert Batta · January 13th, 2008, 10:20 AM

Bob,

You right, thanks..

my problem is a tripod mount balance (see the picture).. but i ordered a cavision balance bracket and now everythings OK :)

Evan C. King · January 14th, 2008, 05:42 PM

You've got it mounted upside in the first pic, does this make the image the camera sees from the adapter upside down again? Or does the image record looks the same whether you've the slr lens mounted above or below the camera?

I ask because I'm looking to get an economy and want to mount it the way you do in your first pic, or sideways maybe so the camera and the slr lens are fairly flush.

Bob Hart · January 14th, 2008, 10:25 PM

The effect of right-angle prisms or mirror pairs in opposition is that the image remains upright whichever way the thing is oriented around the optical centre axes.

Rotate one porroprism/mirror pair relative to another and the image will spin twice from upright to uspide-down through one complete rotation, - fascinating stuff to keep the kid in you amused for hours.

Please don't pull your Letus35 to pieces to try it though as it is a similar though slightly different arrangement and all you will end up with is a kit of parts.

Provided the internal path is wide enough that there is no vignetting or edge masking you can lay it sideways if you wish. From recollection, the mirror path inside the Letus35 is fairly generous so you may get away with it.

January 12th, 2008, 11:21 AM	#1
Robert Batta Regular Crew Join Date: May 2006 Location: Hungary / Europe Posts: 128	Letus Economy & HV20 rig Hi all, This is my new Letus Economy and Canon HV20 rig demo footage coming soon... Attached Thumbnails __________________ Robert Batta my stock video portfolio : https://www.pond5.com/artist/skysuta Pond5 – the world’s first web-based stock footage marketplace –

January 12th, 2008, 09:06 PM	#2
Bob Hart Inner Circle Join Date: Dec 2003 Location: PERTH. W.A. AUSTRALIA. Posts: 4,476	That is one cruelbad but effective positive retention system you have there with that hose clip. Longterm, I would would move it back over the flip enclosure directly above the support pillar as you are presently imposing a downward bending stress on the front tube to flip enclosure shoulder junction and upwards on the rear shoulder junction and the camera itself. Over time this will stretch the screwholes and possibly tear them through if you happen to give the appliance a good clout during agile work or in transport. Last edited by Bob Hart; January 12th, 2008 at 09:08 PM. Reason: added text

January 13th, 2008, 10:20 AM	#3
Robert Batta Regular Crew Join Date: May 2006 Location: Hungary / Europe Posts: 128	Bob, You right, thanks.. my problem is a tripod mount balance (see the picture).. but i ordered a cavision balance bracket and now everythings OK :) Attached Thumbnails __________________ Robert Batta my stock video portfolio : https://www.pond5.com/artist/skysuta Pond5 – the world’s first web-based stock footage marketplace –

January 14th, 2008, 05:42 PM	#4
Evan C. King Major Player Join Date: Jan 2005 Location: Toronto Posts: 532	You've got it mounted upside in the first pic, does this make the image the camera sees from the adapter upside down again? Or does the image record looks the same whether you've the slr lens mounted above or below the camera? I ask because I'm looking to get an economy and want to mount it the way you do in your first pic, or sideways maybe so the camera and the slr lens are fairly flush.

January 14th, 2008, 10:25 PM	#5
Bob Hart Inner Circle Join Date: Dec 2003 Location: PERTH. W.A. AUSTRALIA. Posts: 4,476	The effect of right-angle prisms or mirror pairs in opposition is that the image remains upright whichever way the thing is oriented around the optical centre axes. Rotate one porroprism/mirror pair relative to another and the image will spin twice from upright to uspide-down through one complete rotation, - fascinating stuff to keep the kid in you amused for hours. Please don't pull your Letus35 to pieces to try it though as it is a similar though slightly different arrangement and all you will end up with is a kit of parts. Provided the internal path is wide enough that there is no vignetting or edge masking you can lay it sideways if you wish. From recollection, the mirror path inside the Letus35 is fairly generous so you may get away with it.