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Search: Keyword(s): ; Posts Made By: Chas Tennis
Forum: Camcorders   04-18-2016, 01:11 PM
Replies: 8
Views: 323
Posted By Chas Tennis
How long does the Sony RX100 IV record in its...

How long does the Sony RX100 IV record in its high speed video modes?

What is the fastest shutter speed in bright direct sunlight?
Forum: Camcorders   01-09-2016, 09:51 AM
Replies: 11
Views: 154
Posted By Chas Tennis
After using my high speed video camera for a few...

After using my high speed video camera for a few years, 2 or 4 seconds of total recording time is a show stopper for my application of studying tennis strokes. Also, I don't know how long I may want...
Forum: Camcorders   01-09-2016, 05:06 AM
Replies: 11
Views: 154
Posted By Chas Tennis
There are two resolutions: spatial resolution and...

There are two resolutions: spatial resolution and temporal resolution. Everyone is familiar with spatial resolution from the spec on the number of pixels or lines of resolution. To see finer...
Forum: Camcorders   11-30-2015, 08:25 PM
Replies: 17
Views: 3,255
Posted By Chas Tennis
Website High Speed Video Reviews

http://hispeedcams.com/

Check total recording time and all other specs that might be important for your application.

I'm interested in athletic motions such as tennis strokes and can work...
Forum: Camcorders   11-03-2015, 12:28 PM
Replies: 9
Views: 160
Posted By Chas Tennis
Website with High Speed Video Camera Reviews

This website has reviews of high speed video cameras.

This recent news item is for a Smartphone. They say that the information available so far seems very little and uncertain. ...
Forum: Camcorders   10-20-2015, 01:22 PM
Replies: 17
Views: 3,255
Posted By Chas Tennis
That looks like a great camera. I'm pretty sure...

That looks like a great camera. I'm pretty sure the cost is going to be out of my range since I don't use it for any income purpose.

Since this 2012 thread I have discovered Snapsort for...
Forum: Camcorders   08-25-2015, 07:40 AM
Replies: 1
Views: 130
Posted By Chas Tennis
Uploading 120 fps Smartphone Videos to Youtube?

For some tennis serves, a player uploaded video to Youtube. The LG3 smartphone 720 120 fps videos apparently played back on YT in real time not slow motion. He then slowed them down to 1/8 speed...
Forum: Camcorders   06-24-2015, 03:34 AM
Replies: 3
Views: 154
Posted By Chas Tennis
Here is a new website that deals with affordable...

Here is a new website that deals with affordable HD high speed video cameras.

http://hispeedcams.com/hsc-camera-guide/

A few of the other camera features that might be important for many...
Forum: Camcorders   04-28-2015, 03:16 AM
Replies: 4
Views: 223
Posted By Chas Tennis
The main issue to consider is motion blur. ...

The main issue to consider is motion blur.

Casio produced excellent high performance high speed video cameras from 2008 to 2011. These had full manual exposure control and could set shutter...
Forum: Camcorders   12-21-2014, 10:50 AM
Replies: 11
Views: 342
Posted By Chas Tennis
I have free Vimeo and don't know what Vimeo Pro...

I have free Vimeo and don't know what Vimeo Pro has.

About 2 years ago, I looked into some issues so this information may not be accurate or current -

For free Vimeo I had learned that if I...
Forum: Camcorders   12-21-2014, 05:38 AM
Replies: 11
Views: 342
Posted By Chas Tennis
Here's some information for free Vimeo. There's...

Here's some information for free Vimeo. There's some more on compression I believe, easy to search. (I find this kind of information more difficult to search and find for Youtube.)
...
Forum: Camcorders   12-20-2014, 02:00 PM
Replies: 11
Views: 342
Posted By Chas Tennis
My Firefox has worked fine displaying Vimeo, YT...

My Firefox has worked fine displaying Vimeo, YT and I've never seen that kind still problem. ?

Maybe that issue is for a different thread - to see if many users have your problems with certain...
Forum: Camcorders   12-20-2014, 12:39 PM
Replies: 11
Views: 342
Posted By Chas Tennis
Youtube Supports 60 fps

I don't know much about this.

Apparently now Youtube supports 60 fps.

http://www.theinquirer.net/inquirer/news/2378662/youtube-now-supports-60fps-video-playback-in-chrome-and-safari

I...
Forum: Camcorders   12-20-2014, 04:34 AM
Replies: 3
Views: 157
Posted By Chas Tennis
dpreview forums have a lot of threads on still...

dpreview forums have a lot of threads on still pictures. If you don't get an answer here try a thread there.
Forum: Camcorders   12-11-2014, 03:00 AM
Replies: 11
Views: 342
Posted By Chas Tennis
Both Vimeo and Youtube compress video in addition...

Both Vimeo and Youtube compress video in addition to the compression that occurs on the camera. Also in the past - not sure now - if you uploaded a 60p fps video to Vimeo (and maybe YT also?) Vimeo...
Forum: Camcorders   10-23-2014, 03:47 AM
Replies: 38
Views: 2,184
Posted By Chas Tennis
240 fps is enough time resolution for nearly...

240 fps is enough time resolution for nearly complete 2D analysis of athletic motions.

Thread with some iPhone 6 video examples for tennis and golf....
Forum: Camcorders   10-10-2014, 12:57 PM
Replies: 4
Views: 459
Posted By Chas Tennis
Here is a 9 ft support arm. ...

Here is a 9 ft support arm.
http://www.flycamdslr.com/hdvs/proaim-tm-9ft-jib-arm-with-jib-stand-dl-290-dolly-cameras-weighing-upto-6-8-kg-15-lbs.html

Google: camera high support tripod pictures...
Forum: Camcorders   10-10-2014, 11:04 AM
Replies: 0
Views: 258
Posted By Chas Tennis
Troubleshoot - New Quicktime Pro Problem - Videos not visible after a few minutes.

Video editing software -

In my new Quicktime Pro things work as expected except that if videos are minimized for any more than a few minutes they disappear from inside the QT frame, QT seems to...
Forum: Camcorders   08-14-2014, 03:47 PM
Replies: 2
Views: 403
Posted By Chas Tennis
Monopod vs Hand Held for Panning Sports Videos

Has anyone had experience on comparing hand holding a video camera vs using a monopod for panning in sports (soccer, tennis, baseball, racing,..etc.)

Are there monopods that have scanning heads...
Forum: Camcorders   06-12-2014, 10:23 AM
Replies: 17
Views: 1,659
Posted By Chas Tennis
Rugby? They certainly do. But for £s it must be...

Rugby? They certainly do. But for £s it must be the UK and 50 Hz.
Scowl misled me.......

OP should consider same issues for 50 fps .........

(I do mostly 240 fps, shutter speed - 1/10,000...
Forum: Camcorders   06-12-2014, 09:10 AM
Replies: 17
Views: 1,659
Posted By Chas Tennis
The OP can decide for his application whether he...

The OP can decide for his application whether he wants to emphasize more attractive 30 fps playback or frames with less motion blur for more accurate analysis of locations. ? He also refers to some...
Forum: Camcorders   06-12-2014, 07:20 AM
Replies: 17
Views: 1,659
Posted By Chas Tennis
As far as I know there is no "shutter speed for"...

As far as I know there is no "shutter speed for" 60p fps. It could be set manually or by an automatic exposure control that could select faster shutter speeds for higher light levels.

I have an...
Forum: Camcorders   06-11-2014, 06:03 AM
Replies: 17
Views: 1,659
Posted By Chas Tennis
Lighting Issues - Indoors vs Outdoors, Shutter...

Lighting Issues - Indoors vs Outdoors, Shutter Speed & Motion Blur

http://www.kinovea.org/en/forum/viewtopic.php?pid=2033#p2033

It is nice for stop-action single-frame to have a fast shutter...
Forum: Camcorders   06-11-2014, 05:53 AM
Replies: 17
Views: 1,659
Posted By Chas Tennis
60 fps (or 50 fps) Progressive and Interlaced - ...

60 fps (or 50 fps) Progressive and Interlaced -

I do not know much about this area and my information is probably dated,

I read for sports that TV broadcasts were often using 60p 720. (Or 50p...
Forum: Camcorders   06-11-2014, 05:19 AM
Replies: 17
Views: 1,659
Posted By Chas Tennis
What sports?

What sports?
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