Super High Speed Footage Of A 60D Exposure Cycle
Our buddy Destin from Smarter Every Day is about to have a new baby, but seconds before rushing to the hospital, he shares a neat slo-mo (or high-speed, depending on your take) video of a Canon 60D shutter going through the a full exposure cycle.
You can see the four stages of the exposure:
- The mirror flips
- The first curtain goes down to expose the sensor
- Second curtain covers the sensor to end the exposure
- And finally the mirror jumps back up
Now, here is a question for extra credit, can you calculate the exposure time?
If you are like me and like this kind of random science, you can register to Smarter Every Day Youtube channel here.
Congrats Destin for your new baby!
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Comments
Canon 60D sensor action in slow motion video
Thanks for sharing this saves me having to fiddle around and expose mine and I'll share this video with students.
Impressive
Amazing how violent this appears in slow motion.
Now I understand why shutter life is limited.
Shutter speed
It was 1/30?
Nice!
I calculated that the shutter was exposed for 17 1000ths of a second (17ms), as seen from the timestamps increments. The reciprical of 17/1000 is 58.82, or approximately 1/60th of a second.
I was suprised to see how much play the miror has after being flipped up. Simply amazing that way the world works at such a minute scale.
:)
I think each part of the sensor had about 31 ms to absorb photons :)
wait a minute....
There's a 16ms jump in the timestamps. It goes from t+101 to t+117 suddenly! I counted the ms increments in the video; I didn't subtract the difference in the actual timestamps.
If you go by the timstamps, then it's 1/30th. If you measure the time shown in the video, it's 1/60th.
Author, we need a ruling!
I used the timestamps because
I used the timestamps because i thougt the author leave out some frames to made the video shorter. (but i wouldn't be surprised if you were right)
It is a Canon TLi, not a 60D
It is a Canon TLi, not a 60D
Thank you. At least someone
Thank you. At least someone is paying attention.
The Tli was there to show the
The Tli was there to show the setup. Says so right in the video!
1/30
1/30
Hmmmmm
1/60th - my guess bases on timestamps. I have to agree though - suprisingly violent even seeing the curtain shaking but don't forget that's actualy vibration that we're seeing which would be at much higher frequency.
If he's having a baby he doesn't look very pregnant.... ;0)
????? Exposure time
1-60th or 1-30th It doesn't really matter he forgot to put the lens on :)
Just shows you why on a long exposure it's always good to use mirror lock up if your camera has it.
A much better video!
First - the camera on the video you posted is not a 60D :)
And there is a much cooler video (of the 5DmkII):
http://www.youtube.com/watch?v=ptfSW4eW25g&feature=related
With different speeds - really cool :)
@ Avaviel Thanks! I hadn't
@ Avaviel
Thanks! I hadn't noticed that!
Nice Video
I posted a video that isn't nearly as pretty, but has much more information about what is actually happening during the time when nothing seems to be happening here: http://www.techphotoblog.com/tpb-2-shutter-lag/
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