my profile | my password | search | faq & rules | forum home

» Film-Tech Forum ARCHIVE   » Operations   » Film Handlers' Forum   » B&L anamorphic diameter

Author Topic: B&L anamorphic diameter Phil Housh Film Handler Posts: 24 From: Boise, Idaho, USA Registered: May 2003 posted 05-04-2007 05:58 PM                     Can anyone tell me what the diameter size is on a B&L anamorpic?  |  IP: Logged Tim Reed Better Projection Pays Posts: 5246 From: Northampton, PA Registered: Sep 1999 posted 05-04-2007 06:54 PM                       There were at least two different sizes in the red ring variety, for 4" and 2" backups, respectively.  |  IP: Logged Steve Guttag We forgot the crackers Gromit!!! Posts: 12814 From: Annapolis, MD Registered: Dec 1999 posted 05-04-2007 07:11 PM                     As Tim said there were two... the type 1 had a 4" (101.6mm) rear and the Type II had a 2-25/32 (70.6mm) rear. Or do you mean thread pitch? B&L uses the popular 36TPI versus Kollmorgan that used 32TPI. Steve  |  IP: Logged Phil Housh Film Handler Posts: 24 From: Boise, Idaho, USA Registered: May 2003 posted 05-04-2007 07:14 PM                     Guess I forgot to give the back-up size. It is 2 inch. Sorry about that.  |  IP: Logged Phil Housh Film Handler Posts: 24 From: Boise, Idaho, USA Registered: May 2003 posted 05-05-2007 11:51 AM                     Steve, This is the info I got from Widescreen Museum: Type I is 4.25" diameter with 70.6mm rear. Type II 5.25" diameter with 101.6mm rear.  |  IP: Logged Tim Reed Better Projection Pays Posts: 5246 From: Northampton, PA Registered: Sep 1999 posted 05-05-2007 12:54 PM                       You mean you were asking about the fronts of the lenses? That's not normally used for anything, unless you plan on making a reverse-anamorphic adapter?  |  IP: Logged Phil Housh Film Handler Posts: 24 From: Boise, Idaho, USA Registered: May 2003 posted 05-05-2007 03:47 PM                     No, I was interested in the backs.  |  IP: Logged Steve Guttag We forgot the crackers Gromit!!! Posts: 12814 From: Annapolis, MD Registered: Dec 1999 posted 05-05-2007 04:39 PM                     It is possible I got my type 1s and type 2s backwards. However, 70.6mm = 2-25/32" and 101.6mm = 4" That you can bank on.  |  IP: Logged Rick Deleau Film Handler Posts: 13 From: Portage la Praire, MB, Canada Registered: Mar 2007 posted 05-08-2007 10:21 AM                     Hi on the topic of Lens I a have a Kollmorgen Lens Selector (slide ruler) I'm trying to figure it out! I have a 44' throw on to a Maximum of 25' wide scope screen, if I could email someone a copy of this (slide ruler), perhaps you could explain it? or skip the lesson and just tell me the scope, and flat size. Thanks rick  |  IP: Logged Alan Gouger Jedi Master Film Handler Posts: 501 From: Bradenton, FL, USA Registered: Jul 2000 posted 05-08-2007 11:07 AM                        Rick Looking at my lens calc you will need a 67mm or 2 1/5" to 2 3/4" back up.  |  IP: Logged Mark Gulbrandsen Resident Trollmaster Posts: 16657 From: Music City Registered: Jun 99 posted 05-08-2007 03:22 PM                     Philio... You have E-Mail.... Mark  |  IP: Logged Phil Housh Film Handler Posts: 24 From: Boise, Idaho, USA Registered: May 2003 posted 05-08-2007 04:30 PM                     Thanx Mark!  |  IP: Logged Alan Gouger Jedi Master Film Handler Posts: 501 From: Bradenton, FL, USA Registered: Jul 2000 posted 05-08-2007 06:02 PM                        Rick I forgot to mention, go to the "Manuals" section of this form to the left and choose software. There's a nice lens calc download. Very easy to use.  |  IP: Logged Rick Deleau Film Handler Posts: 13 From: Portage la Praire, MB, Canada Registered: Mar 2007 posted 05-08-2007 09:41 PM                     Thanks Allan  |  IP: Logged

All times are Central (GMT -6:00)

Printer-friendly view of this topic

Hop To: Select a Forum: Category: Operations -------------------- Digital Cinema Forum Film Handlers' Forum Large Format Forum Ground Level Feature Info, Trailer Attachments & REAL Credit Offsets Category: Community -------------------- Film-Yak Film Handlers' Movie Reviews The Afterlife Bob Maar's Joke-A-Thon Category: Classified -------------------- Equipment and Supplies Wanted/For Sale Help Wanted/Seeking Employment Category: System -------------------- Software Beta Testing Forum

The Film-Tech Forums are designed for various members related to the cinema industry to express their opinions, viewpoints and testimonials on various products, services and events based upon speculation, personal knowledge and factual information through use, therefore all views represented here allow no liability upon the publishers of this web site and the owners of said views assume no liability for any ill will resulting from these postings. The posts made here are for educational as well as entertainment purposes and as such anyone viewing this portion of the website must accept these views as statements of the author of that opinion and agrees to release the authors from any and all liability.