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class="style5" Frame Grabs From An F900

>Published : 28th April 2005

>On one of my HD features, the script supervisor grabbed NTSC frames from the downconverter as a method of checking continuity. He had some sort of Mini-DV deck with a frame buffer capability.

>Is there any cost-effective way to grab full HD-resolution frames off of the F900 while shooting, perhaps using the HD-SDI output from the camera? What would be required?

>David Mullen, ASC
Los Angeles


>David Mullen writes :

class="Paragraph">>Is there any cost-effective way to grab full HD-resolution frames off of >the F900 while shooting, perhaps using the HD-SDI output from the >camera? What would be required?

>Sure, the Leader 5700 scope handles that beautifully as well as being a superb and versatile scope in its own right. I never do a project without one.

>Tom Tcimpidis


>David:

>I have a system that grabs full rez HD into photoshop on your laptop. You can take a look at it on my website. Let me know if you're interested

>Derek M. Grover
Director of Photography
Digital Imaging Technician
Hollywood Digital Imaging, LLC
http://www.hollywooddigitalimaging.com


>Tom,

>I just bought the LV-5750 portable version of the waveform. The screen grab ability was an important feature in my decision. I don’t have mine yet and was wondering how high the screen grab quality actually is? Does it match the resolution of the camera used or is it limited to the 1024 x 768 resolution of the LCD?

>John Chater
DP- San Francisco


>David Mullen wrote:

class="Paragraph">>On one of my HD features, the script supervisor grabbed NTSC frames >from the downconverter as a method of checking continuity.

>If you had a fire wire bridge and a laptop ( Mac) you could use iStopmotion which is a nifty little animation/ frame grabber app that has "onion skinning" so you can over lay one still over another to compare. In this case the path would be F900>ntsc down convert>fire wire bridge>lap top. Bada bing

>YMMV, no business relationship with iStop other than I use it\ and I am a paying customer.

>Mark Smith
Oh Seven Films
143 Grand St
Jersey City, NJ 07302


>John

>BTW your unit is shipping today. It captures 1024x768 which is the resolution of the Leader display.

>To grab full 1920 X 1080 either an AJA or Black Magic capture card in a mac or pc allows for full resolution grabs from HDSDI.

>Michael Bravin
Chief Technology Officer
Band Pro Film & Digital
www.digizoom.com


>It's limited to the XGA resolution of the scope's screen which is indeed 1024x768. I find that to usually be more than adequate for my purposes. If you need full 1920x1080 or 1440x720, you can use any one of the numerous capture card solutions in a PC or Mac.

>Tom Tcimpidis


class="Paragraph">>If you need full 1920x1080 or 1440x720, you can use any one of the >numerous capture card solutions in a PC or Mac.

>Are there any laptop-based HD capture solutions? Wouldn't it be best if one could save to a memory card in the camera, like (ahem) a consumer camcorder?

>Tim Sassoon
Sassoon Film Design


>If you have a 'scope in the budget, get a Leader 5700. You can grab frames to an internal SD card, or even better, grab them to a laptop via bluetooth. Dave Canning showed me some stills from various jobs when we met up at NAB, and the quality was just great.

Dave Satin
Video Engineer


>David Mullen writes :

class="Paragraph">>He had some sort of Mini-DV deck with a frame buffer capability.

>FYI, all Sony Mini-DV equipment can do frame grabs, either to tape or to memory stick. Or from tape to memory stick, or vice-versa.

>Sony's Mini-DV camcorders (and possibly their palm-size decks -- I'm not sure) can also chromakey a raw camera image over a blue-matted stillframe "plate" stored in the stick. Conceivably this could be used as a poor-person's preview system for certain bluescreen shots.

>Dan Drasin
Producer/DP
Marin County, CA


class="Paragraph">> I have a system that grabs full rez HD into photoshop on your laptop.

>Hi Derek,

>Where on your website is it? I'm interested, but I don't have very much time to surf....

>Thanks,

>Dave Stump ASC
VFX Supervisor/DP
LA, Calif.


>David :

>Here's a link http://www.hollywooddigitalimaging.com/OZ.html

>Derek M. Grover
Director of Photography
Digital Imaging Technician
Hollywood Digital Imaging, LLC