Hi All,
I'm looking to find a way to trigger a camera based on a sensor. Once the sensor has been triggered, I'd like to capture a still frame within 1ms.
Is that possible? What kind of camera and connection would be needed?
To capture a still frame within a few milliseconds you need a fast response from the sensor and camera connection; but you also need a suitable light source.
Are you aiming to capture something that is moving very quickly? If so you need to overcome moti0on blur.
I think we need more detail
agreed.
A camera in a light-tight environment with the shutter open. When the event happens, the flash will capture the image, and the camera shutter will need to be closed.
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It would be well lit with artificial lighting.
I have a break beam setup, and when something hits it - I'd like to start the capture within 1ms.
Motion blur, exposure time can hopefully be addressed with global shutter / very low exposure time.
That we can't see...
A sloooow beam break sensor with 38kHz modulated IR and polling can react in ~0.5ms.
Continuous IR beam break sensors with interrupts can be much faster than that.
Leo..
What does that mean in terms of lux?
1/1000 is pretty short, but it's already 1ms and that's equal to your desired response time, so the end of your exposure us alrwsdy at the limits of your timing requirements even if the trigger is instantaneous (which it won't be).
Using flash as suggested above is the way to go. Open shutter in anticipation of the event, fire strobe in trigger, close shutter and process data. This laxes the requirements on your camera system considerably and a strobe with e.g. 100us exposure time is a fairly trivial item. Triggering it with a us timeframe is likewise fairly trivial.
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