IMS/B4-Mount Optical Viewfinder for SI2K. at DVinfo.net
DV Info Net

Go Back   DV Info Net > High Definition Video Acquisition > HD and UHD ( 2K+ ) Digital Cinema > Silicon Imaging SI-2K

Silicon Imaging SI-2K
2/3" 1080p IT-integrated 10-bit digital cinema w/direct-to-disk recording.

Reply
 
Thread Tools Search this Thread
Old April 19th, 2012, 11:36 AM   #1
Inner Circle
 
Join Date: Dec 2003
Location: PERTH. W.A. AUSTRALIA.
Posts: 4,476
IMS/B4-Mount Optical Viewfinder for SI2K.

P+S Technik designed and manufactured an optical viewfinder which incorporated an optical split taken from within the space between the B4 flange and the IMS flange on their B4 mount which corrected lenses for three chip cameras to single sensor cameras.

It was a beautiful piece of work, engineered with all the precision one has become accustomed to from P+S Technik. It was very expensive and at the time was unaffordable for me.

The company offered a limited number on their German eBay site and I luckily bought one at a heavily discounted price.

For those owner-operators still with the SI2K, Ikonoskop A-CAM owner-operators who have the IMS-Mount version and RED owners who defied the threat of loss of warranty and fitted the IMS mount to their REDs, the optical viewfinder may be found to be a useful accessory. For RED owner operators, this is suited only for 1920x1080 or 2K cropped sensor work.

The camera system information is not reproduced in the viewfinder. As a focusing tool on the fly, it will be hard to beat and one traditional film operators are familiar with.

With the eyepiece in the level position and the lens zoom position matched, the natural direct left eye view and the right eye view through the finder become comfortably harmonised without eye strain, which speaks for the precision of the design and build work by P+S Technik.
Attached Thumbnails
IMS/B4-Mount Optical Viewfinder for SI2K.-p-s-optical-viewfinder.jpg  

Last edited by Bob Hart; April 19th, 2012 at 11:42 AM. Reason: error
Bob Hart is offline   Reply With Quote
Old May 5th, 2012, 02:35 PM   #2
Inner Circle
 
Join Date: Dec 2003
Location: PERTH. W.A. AUSTRALIA.
Posts: 4,476
Re: IMS/B4-Mount Optical Viewfinder for SI2K.

A short heads-up for people with SI2K Mini's, full camera-recorders with IMS Mount or those RED owners who have fitted the P+S Technik IMS Mount system to their RED ONE cameras and may want to shoot in 2K with cropped sensor and may like to have optical viewing through the taking lens.

P+S Technik have relisted their B4 Mount / optical viewfinder for the IMS mount system at a heavily discounted price here :-

P+S TECHNIK SI-2K Optical Viewfinder for B4-Mount Lenses / Optischer Sucher | eBay


It is uniquely designed for a 2/3" or Super16mm sized sensor camera, the SI2K. The unit entirely substitutes for the IMS B4-Mount. A B4-Mount lens fits up to the front of it.

As far as I am aware, there has only been a limited production run on the viewfinders which are apparently based on the Evolution finder for ARRI motion picture cameras. We here in Western Australia have taken two for SI2Ks as an optical 3D pair so there may not be many left in stock.

The viewfinder/B4-Mount optically corrects 3 x sensor designed lenses for single sensors.

Last edited by Bob Hart; May 5th, 2012 at 02:37 PM. Reason: error
Bob Hart is offline   Reply With Quote
Old May 7th, 2012, 12:22 PM   #3
Inner Circle
 
Join Date: Dec 2003
Location: PERTH. W.A. AUSTRALIA.
Posts: 4,476
Re: IMS/B4-Mount Optical Viewfinder for SI2K.

Here's a link to some happy snaps of the viewfinder-mount.

Bob Hart is offline   Reply With Quote
Old May 18th, 2012, 11:50 PM   #4
Inner Circle
 
Join Date: Dec 2003
Location: PERTH. W.A. AUSTRALIA.
Posts: 4,476
Re: IMS/B4-Mount Optical Viewfinder for SI2K.

This image might prompt your curiosity factor.


Two P+S Technik SI2K B4-Mounts with optical viewfinders as binocular finders on a camera pair.

The viewfinders harmonise nicely, due to precision of P+S build quality. This would be fine with a parallel rig.

To deal with convergence pulling, the upper articulating eyepieces would have to be fixed together with the friction screws backed off and may still disharmonise as the swingarms will move rearwards and the eyepiece interaxial may shift unless the swingarm friction can be reduced.
Attached Thumbnails
IMS/B4-Mount Optical Viewfinder for SI2K.-3d-previsualisation-optical.jpg  

Last edited by Bob Hart; May 18th, 2012 at 11:53 PM. Reason: add image
Bob Hart is offline   Reply With Quote
Old June 9th, 2012, 02:20 AM   #5
Inner Circle
 
Join Date: Dec 2003
Location: PERTH. W.A. AUSTRALIA.
Posts: 4,476
Re: IMS/B4-Mount Optical Viewfinder for SI2K.

Here's a clip of Ricey getting all ecstatic over optical 3D pre-visualisation.

Bob Hart is offline   Reply
Reply

DV Info Net refers all where-to-buy and where-to-rent questions exclusively to these trusted full line dealers and rental houses...

B&H Photo Video
(866) 521-7381
New York, NY USA

Scan Computers Int. Ltd.
+44 0871-472-4747
Bolton, Lancashire UK


DV Info Net also encourages you to support local businesses and buy from an authorized dealer in your neighborhood.
  You are here: DV Info Net > High Definition Video Acquisition > HD and UHD ( 2K+ ) Digital Cinema > Silicon Imaging SI-2K

Thread Tools Search this Thread
Search this Thread:

Advanced Search

 



All times are GMT -6. The time now is 03:08 PM.


DV Info Net -- Real Names, Real People, Real Info!
1998-2024 The Digital Video Information Network