Tag Archives: temperature

Schlieren Imaging Slow Motion DIY!

Schlieren Imaging Slow Motion

Sometimes all it takes to embark on a new project is some unexpected inspiration.  On the Incredible Slow Motion video by Veritasium – Seeing the Invisible: Schlieren Imaging in SLOW MOTION we are not only inspired but awestruck by the results of this simple and doable at home scientific experiment.   The experiment allows a camera to visualize the vortexes of gases and temperature differences in the air which serve to create some very interesting scientific experiments and or artistic visualizations.

You will need a Concave Parabolic Mirror like the ones used in reflective Newtonian telescopes, “you may have one lying around from your stargazing days”,  you will also need a small light source like an LED flashlight or single diode and finally a razor blade or similar precise object to cut off the light to the camera on a plane. → Continue Reading Full Post ←

Sony a6500 New Slow Motion Samples!

Sony a6500 New Slow Motion Samples

We have now a fairly good amount of slow motion samples for the Sony a6500 compact APS-C Camera to share with you.  It is clear that the quality this camera can provide is above the norm but we still do see some aliasing in diagonal fine lines which is to be expected by a sensor that is skipping some of the lines to achieve 1080p 120fps.

While the 4k UHD in this camera is derived from an oversampling of 6k; the 1080p 120fps is being extracted from a 24.2MP sensor using a 13MP effective crop factor 1.9x;  is throwing away some line information to get there. Also the camera caps frame rate output over HDMI at 60fps so there is no way to record super slow motion to an external recorder at 120fps. → Continue Reading Full Post ←

Sony a6500 Slow Motion and Overheating!

Sony a6500 Slow Motion

The Sony a6500 came as a big surprise to a6300 owners in that their camera was loosing value overnight in the secondary market to a near identical close with a touch screen and IBIS stabilization.  However the camera has still not reached the hands of many pre order customers but we were able to find a few insights on the 120fps full HD slow motion mode.

The quality should be very similar to the a6300 since the sensor is identical but with slight improvements in the dynamic range and color pipeline should yield a slight increase in per pixel definition. The compression should be very close with the XAVC-S codec at 21Mbps at 24p and or 50Mbps at 60p with easily selectable formats. → Continue Reading Full Post ←