Changed my microscope from AC to DC today

[macnmotion]

Today I completed changing my microscope from AC to DC. There's still some beautification to do, that will happen this week, but the goal was to open up shooting my movies at higher frame rates without flicker. I've been limited to shooting at exactly 100 fps to match a full cycle of our 50hz AC power. I just ran some tests of fast moving organisms and animals and I'm very happy with the results -- I'll be able to see action that previously was a blur or happened between frames, and I'll be able to create some slow motion videos as well. I just shot my tests at 1600 fps, but can go higher if I want. Using a Nikon Inverted Diaphot and Nikon D750 DSLR.

Please excuse the quality of these test shots, I merely shot them to test slow motion capabilities when imaging at 1600 fps. For each clip, I show a few seconds at full speed, then the same few seconds at 1/4 speed.

https://youtu.be/pR9QmoEdbcE

[macnmotion]

Here is a link to some test video shot at 1600 fps. Each clip shows a few seconds at full speed, followed by the same few seconds at 1/4 speed. Please excuse the quality of the clips, this was merely a test of the frame rate, slow motion, and ensuring no screen flicker after converting to DC.

https://youtu.be/pR9QmoEdbcE

[Alexander]

Youtube informations says 30 fps. That video is 1280x720 and has just 18 MBytes. Do your calculation, how big it would be if it had 1600 fps.

Looks like you mixed up fps and shutter speed.

[macnmotion]

Youtube informations says 30 fps. That video is 1280x720 and has just 18 MBytes. Do your calculation, how big it would be if it had 1600 fps.

Looks like you mixed up fps and shutter speed.

The video was shot at 1/1600 second, and while my camera is capable of 60fps at 1080P, each of those frames is 1/1600 of a second, eliminating any motion blur. The clips were stretched over time to 4x their duration, slowing down playback to 1/4x speed (e.g. a 3 second clip was stretched to 12 seconds, with no loss of playback smoothness because of the high speed it was shot at). If you viewed the YouTube clip at 720P then you didn't select playback on your device at 1080P, which is the resolution it is uploaded at.

[LouiseScot]

*Here’s why frame rate can be mistakenly equated with shutter speed: some people believe that if they are shooting with a shutter speed of 1/100th of a second, that they are in turn shooting 100 frames per second. This is not the case.*

https://vimeo.com/blog/post/frame-rate- ... ter-speed/

Louise