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

» Film-Tech Forum ARCHIVE   » Operations   » Digital Cinema Forum   » Nifty new Light Calibration Feature on Barco Series 2

Author Topic: Nifty new Light Calibration Feature on Barco Series 2 Steve Guttag We forgot the crackers Gromit!!! Posts: 12814 From: Annapolis, MD Registered: Dec 1999 posted 09-15-2010 07:59 PM                     So, I'm installing a new DP2K-20C (Barco Series 2) projector and all of the Macros have this new line item...it has a light bulb icon but has just the initials of LCF...I couldn't figure out what it was and it would get you a warning on each macro since it couldn't be executed. The factory macro for it called for the "FLAT" file on some and "Scope" file on others. So when I was calibrating the CLO (Constant Light Output), if for no other reason it has the projector read out in foot-Lamberts it prompts me to save it to a file (never used to do that)...and then it hits me...this is the file that the Macro is wanting to see. So now, you can calibrate the CLO separately for Scope, Flat, 3D...whatever This way, no matter which format, lens setting...etc you have the projector will read out (reasonably accurately) in Foot-Lamberts. It also means you can set your CLO to 14.00 fL in your 2D files and 5.5 (or whatever you prefer for 3D) in your 3D files and it will keep the light at that level...without you having to do the math (well...since I calibrated the CLO file on 2D flat, but since I zoom out for scope it needs to be 23fL to really be 14fL...etc)...Now create a file for each unique situation (lens zoom/3D) and it reads out right and maintains the light right. Steve  |  IP: Logged Sam D. Chavez Film God Posts: 2153 From: Martinez, CA USA Registered: Aug 2003 posted 09-15-2010 09:25 PM                       The series one Barco DP2000 allowed different lamp current settings for 2D and 3D macros but I don't remember where it was done. In my case it was max current for one and minimum safe current for the other. It worked out to 5.5 for Dolby 3D and something like 22 FL for 2D.  |  IP: Logged Steve Guttag We forgot the crackers Gromit!!! Posts: 12814 From: Annapolis, MD Registered: Dec 1999 posted 09-16-2010 07:08 AM                     Yes...all of the series 1 projectors allowed for different lamp settings for each macro/channel/preset...however Barco is the first now, with the series 2 (and possibly retro back to series one on the next firmware update) to actually calibrate the lamp reading by macro so 14, is 14, is 14...regardless of how much you zoom or what you put in the light path (after the sensor). Its not a huge thing but definitely a clever little thing. -Steve  |  IP: Logged Sam D. Chavez Film God Posts: 2153 From: Martinez, CA USA Registered: Aug 2003 posted 09-16-2010 11:01 AM                       Thanks Steve, that is a very cool feature, really CLO where it counts; on the screen!  |  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.