Tagarno microscope capture success  - Page 1
Forum section: electronics / general

author: EEVblog
author_rank: Unknown
timestamp: May 19, 2014, 01:18:26 pm
content: See here:Using a cheap $160 gamer capture device, direct to SD card from the HDMI output.http://gamerzone.avermedia.com/game_capture/live_gamer_portableSo much for Tagarno insisting that I need a $1K+ gamer level PC to record from the 60fps USB 3.0To be fair though, youdoneed such a high end PC to record the USB 3.0 output at 60fps. But that's of course only if you are serious enough to want 60fps instead of 30fps capture. I posit that hardly anyone would, yet this is the only solution Tagarno recommend.I just did it with a capture device that costs $160 and no PC required, and I solved the audio annotation problem too using the separate mic input.And it's the same workflow as I do now with my normal camera. Direct to SD card with included optimised audio.The quality is a bit limited by the maximum 16Mbps capture bit rate. but I'm getting one of these which will do up to 60fps for the same price:http://gamerzone.avermedia.com/game_capture/live_gamer_hdBut it needs a PC of course, so not as easy as the single button to SD card.Note the "eevblog" text on the senheiser LCD is fuzzy, it's much sharper on the live HDMI video output. So there are certainly compression artifacts there.And I was able to stream the full HD hardware compressed video via old USB2.0 and capture it on my old i3 notebook, no problems at all.I'm also able to use this output on my future live shows.So basically problem solved

author: DJ
author_rank: Unknown
timestamp: May 19, 2014, 01:33:28 pm
content: Interesting.This the one?http://www.ebay.com/itm/AVerMedia-Live-Gamer-Portable-LGP-Lite-HD-Game-Capture-for-PC-PS3-Xbox-360-Wii-U-/281270503188

author: EEVblog
author_rank: Unknown
timestamp: May 19, 2014, 01:47:00 pm
content: Quote from: DJ on May 19, 2014, 01:33:28 pmNo, mine is the original Live Gamer Portable.I did not see that lite version.It doesn't have an SD card slot like mine does, so not standalone.Oh yes, I had forgotten it does do 60Mbps in streaming/recording mode over USB 2.0. I need to try that.

author: Towger
author_rank: Super Contributor
timestamp: May 19, 2014, 06:55:34 pm
content: Have you looked at Blackmagic's Intensity range of HDMI capture devices.

author: Rick Law
author_rank: Super Contributor
timestamp: May 20, 2014, 01:01:14 am
content: Dave, not bad, I do notice a couple of issues you may want to look into:(1)I do notice some fuzziness, but it could be the video formatting by youtube or by the Tagarno software. It would be good to capture a still frame or two and check for fuzziness. If the stills are knife sharp, you know it is not the lens or focus but the video formatting software. Perhaps you can choose to use other video compression codec or other video formatter software if that is important to you.>>> If it is the focusing and not the video formatter, try increasing the light - it could help. More brightness would allow you to select a smaller aperture, or if it is auto aperture, by selecting a fixed exposure time, it should reduce the aperture in reaction to the added brightness. Reduced aperture size will result in a greater depth-of-field. (If it doesn't have aperture setting auto or otherwise, the software may just reduce the exposure time in which case it will not help with the focus.)(2)I think I see some distortion. The left side of the card does not seem to be a straight edge. I notice the curving (top & bottom are farther out with center concave inward). But your card could be like that and the video is showing exactly how the card looks. The distortion is mild and should not be interfering with "the viewing experience".Rick

author: DJ
author_rank: Unknown
timestamp: May 20, 2014, 01:03:30 am
content: Higher speed microscopy is very useful for certain applications:http://www.microscope.modelengines.info/taigmicroscope.htmlTaking it a step further, imagine real time thermal microscopy for machining, hole drilling, etcEven further out (or in, as the case may be), imagine binocular thermal microscopy. This is the sort of stuff that precision micro-machinists would have an organism over.Think of it: a pair of (relatively) inexpensive med to high thermal cameras, at roughly interpupillary distance, 30-60 Hz or better, feeding VR glasseshttp://www.zeiss.com/cinemizer-oled/en_de/home.htmlImagine surgeons using it.who wants to give it a go?

author: DJ
author_rank: Unknown
timestamp: May 20, 2014, 01:09:38 am
content: Quote from: Rick Law on May 20, 2014, 01:01:14 amYep, pincushion distortion is pretty evident, although if constant can be post processed. Good glass costs $$$Check overall pincushion/barrel with a crosshatch target, and known dimension test targethttp://www.thorlabs.com/newgrouppage9.cfm?objectgroup_id=4338or similar

author: DJ
author_rank: Unknown
timestamp: May 20, 2014, 01:22:00 am
content: Quote from: DJ on May 20, 2014, 01:03:30 amMy idea, May 20, 2014, 11:03 AM, southern hemisphere time, May 19, 2014, 9:03 PM northern hemisphere real EST. Or EDT. Spring forward, fall forward, one of those. Will license for beer.

author: EEVblog
author_rank: Unknown
timestamp: May 20, 2014, 02:00:04 am
content: Quote from: Towger on May 19, 2014, 06:55:34 pmYes, they don't appear to support 1080P60 input.

author: EEVblog
author_rank: Unknown
timestamp: May 20, 2014, 02:02:25 am
content: Quote from: Rick Law on May 20, 2014, 01:01:14 amYes, I'm aware of all this, this was just a first quick test to SD card to see if it worked. I will have to use a PC to get the higher bitrate.