[Brian Jacobs]

Paul, hi…

Thank you for your thoughts and comments.

My email address is bricyn786@yahoo.com
Please do feel free to get in touch with me directly so we can discuss your idea….

I expect to have my first prototype ready for testing in a couple of weeks….I’m waiting on a component to arrive from China…The latest configuration of my design provides for over 5 hours of uncompressed HD capture….

I can easily downscale my design for SD, if you indicate to me how many hours of SD you need to be able to capture and what kind of additional weight you can carry.

Brian Jacobs.

Brian

[Brian Jacobs]

Thanks for your input Michael…

Brian…

[Brian Jacobs]

Mark,

thanks so much for your valued and much needed positive feedback…

Your point re affordability is in fact one of the reasons I am confident that this will work…..

When I have a prototype ready, I will be looking for people to test it….

My email address is – bricyn786@yahoo.com – please mail me directly with your contact details so I can keep you updated on progress. Once its ready, we can make work out a schedule for testing.

Brian Jacobs.

[Brian Jacobs]

Don,

I know about Convergent Designs products and specifically the Flash XDR…..wasn’t ignoring your pointer in that direction…..

I’m interested in exploring the advantages of working uncompressed.

Wafian HR-F1 is closer to what I’ve been working on…..with this major difference – the Wafian is a big box and limits camera movement unless you have someone to carry it around with you….. whereas what I’m after is a wearable system that allows better camera movement……

I can make a testing prototype in two weeks with my own money (I’ve been working on the design for a while) – the question is – is it worth doing………? or are the existing codecs employed by the sub 10,000 dollar cameras delivering enough quality……i.e. is there any real-world advantage in being able to bypass camera internal compression and get AVI or MOV uncompressed files…….that’s really the question I’m trying to get a clear answer to, from working professionals such as yourself…..

I appreciate your continued input on this issue….

Brian.

[Brian Jacobs]

Great, thanks for that info Steve….very much appreciated…

Would there then, in your opinion, be no advantage as far as image clarity goes to being able to capture uncompressed, as opposed to using the cameras inherent compression…..?

Are you shooting full 1920 x 1080p…..?

Any difference in clarity of fast-moving objects shooting 1080p vs 720p….?

Any difference in clarity between objects held in frame (ex panning with the aircraft) as opposed to a stationary frame with the aircraft moving from one side of the frame to the other (assuming aircraft size in frame is about 1/8th entire frame….?

I understand that Sony advises using 720p rather than 1080p to get clarity at speed…..is this correct….why……?

Brian….

[Brian Jacobs]

Craig, your comments noted…thanks…I’m always at a loss myself as to what constitutes ‘prosumer’ and what ‘professional’ – I’ve just drawn an arbitrary line at 10,000 dollars and I’m looking at people using sub 10,000 dollar cameras…..

as my father said ‘confusion is the one guest that never refuses an invitation’….

Basically, what I’m designing is something that will take the HDMI or HD/SDI output from a HD (1920 x 1080p) sub 10,000 dollar camera such as the Sony EX1 or EX3 and capture to a hard disk array, sort of like some Convergent Design products, but in a form that will incorporate a complete wearable solution (as a backpack) and allow the cameraman complete freedom of movement, virtually unlimited hours of shooting (say 8 hours a day). Very ambitious. I was a computer geek before I turned to video, so I know I can do it, using existing components….question is ‘Is it worth it…?’ ….question 2 has been answered…thanks…question 1 remains…….

1. CMOS based cameras such as Sony EX1 – fast moving objects (tennis game, cars on a highway) get blurred, even when shooting at fast shutter speeds…..my question is this – Is this blurring due to compression within camera or an inherent problem with responsiveness of CMOS sensors….? this has direct relevance inasmuch as if it is a problem with responsiveness of CMOS sensors, then it won’t be solved by bypassing the cameras compression….however, if it is not due to the sensors, but due to the compression, then it should be solved by capturing uncompressed direct from HD-SDI port……..?

Brian…

[Brian Jacobs]

Thanks for your response…

I’m actually talking about pro-sumer cameras (sub 10,000 dollars…?) like Sony PMW-EX1 or EX3 etc….I asked these questions of Don Greening on another CC forum and he advised me to post it to the Sony Cine-Alta forum…..

I’m talking about overcoming the capture and storage limitations of the pro-sumer (sub 10,000) cameras by providing a truly portable solution capable of 8-bit or 10-bit 4:2:2 capture in either AVI or MOV format….

Brian