On 5/27/07, <b class="gmail_sendername">Jaime Oliver</b> <<a href="mailto:jaime.oliver2@gmail.com">jaime.oliver2@gmail.com</a>> wrote:<div><span class="gmail_quote"></span><blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">
Hi Chris, thanks for your response<br><br>Well, color definition is important since the project i am working on<br>involves color tracking (two mallets one blue one red), so some<br>resolution is necessary to achieve that. they are between
1.5 and 2.5<br>meters away from the camera. the camera i have been using is a 3ccd<br>canon 1080p30, but i am digitizing the svideo output to 320x240 for<br>the actual tracking.</blockquote><div><br>With resolution that low you could switch to an interlaced DV camera and use 60 720x240 fields per second. Certain capture cards under directShow will do this.
<br> </div><br><div>so i think i am looking for at least 720p60.<br><br>JVC makes HDV cams that run at that but I don't know if the cheaper 'prosumer' ones do it. Panasonic P2 camera does that I believe and that camera is just over $5k.
</div><br><blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">so... what are the lowcost 1080p60 cameras you mention? how good is<br>their color resolution?
</blockquote><div><br>Oh they aren't low cost. The lowest cost one is about $30k and increase from there. Most of these aren't video cameras but 'digital film' cameras so their resolutions are more like 2048x1536 (which SDI_HD supports). These are all bleeding edge and quite rare.
<br></div><br><blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">About PCI cards, i'll check AJA and BlackMagic, I think i'll have to<br>
stick with them since so far they are the ones with least latency and<br>your comment confirms my experience. I was using a pinnacle card and a<br>hauppauge card, do you know these? do you know if AJA and blackmagic<br>are better?? these two are old cards so i suppose more recent ones
<br>should be faster...</blockquote><div><br>AJA and BlackMagic are professional capture cards and they are not that cheap. The standard resolution cards are almost $1kUSD and the HD ones are over that amount. The HD ones have a bit more latency.
<br></div><br><blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">Have you tried turtle beach??</blockquote><div><br>No.<br> </div><br><blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">
<a href="http://www.turtlebeach.com/products/vausb/home.aspx">http://www.turtlebeach.com/products/vausb/home.aspx</a><br><br>this is the only external card i found with low latency, but didn't<br>get to measure precisely how much difference this had compared to the
<br>PCI cards.<br><br><br><br></blockquote></div><br>