Let's Take A Closer at the Proceeding Clip
 

Hi Friends. Please check out the Test to see a slowed down version of one of two time lapse sequences I took on Wednesday Afternoon in Montreal. Notice the white rod streaks going first West, then proceeding East on the Left hand (South) side of Mount Royal.

.....I wonder about how the Flash XDR and Nano Flash take the single frame ? Does the SSDR "clock" the CCD in the camera, or is it programmed to take each frame at a specific shutter speed irregardless of what you set the camera shutter speed to ? I was using a fairly high shutter speed(Circa 380th of a second ?), so if the settings on the camera do matter, then whatever this was had a very high velocity, because it looks blurred or streaked. Windows Media doesn't help much here because it smoothes over everything, which further clouds the image clarity even at high data rates (2Mbps Encode rate used here)

Isn't that a jet, and the "streaking" is the contrail forming then evaporating?

Dear Mark,

The Flash XDR and nanoFlash do not control the camera.

We take the output of the camera.

Thus, the exposure is set by you or the camera, not by us.

We take the images from the camera exactly as the camera sends them to us. We do not do any frame blending or have any control over the exposure.

Camera Settings Count
 

Hi Dan:
OK. Thanks for the confirmation that camera controls the show :-)

...Hi Mike: Yes, it's possible it is indeed a jet. However, if it is, then it's one flying an approach toward Montreal which is outside the usual flight corridors for Montreal approach. I suppose it could be a fighter jet out of Baggotville, Quebec Canadian Air Force Base, or a US Air Force f-18 out of Burlington, Vermont. The US Air Force used to fly up out of Burlington and sonic boom us regularly. There used to be a joke about that in Montreal - whenever we heard the sonic booms Montrealers would look up and say, "The American are coming ! The American are coming !" I don't think the US Air Force still flies over us. Who knows ?

Dear Mark,

After watching this many times, I finally saw the streaks.

If appears to be very fast if it is a plane.

Before I actually saw them, I was wondering if it was a reflection from someone's watch or other shiny object, as the sun was very bright that day.

What are those white streaks ?
 

Hi Dan: Yeah, exactly. If it's a plane, then it has to be a fighter jet or something which can go supersonic because I was using a relatively fast shutter speed in the hope I would get a crisp time lapse sequence without motion blur, since I was shooting a stationary object head on with only the Sun's ultra slow movement across its arc. WMV also clouds the issue by adding some video smooting. Even when you turn that off it's still on.