Sony PMW-EX1 CMOS FAILS Strobe Test.
FreshDV shot some interesting footage with the Sony PMW-EX1 and video of a police car with numerous strobes firing clearly demonstrated that Sony’s new flagship SxS camcorder, despite being knighted with the CineAlta badge, clearly has problems with capturing partial-second instances of time.
There is going to be trouble in Teaneck…
The footage shot by Matthew Jeppsen on FreshDV clearly shows all kinds of half, and partial illuminated frames when shooting video of a police car with strobes that do fire at very precise intervals. There’s even indication that the camera completely missed some of the strobe flashes because the frames that are illuminated, are not in any even pattern.
If you take white strobes firing at precise, regular intervals, and shoot it with a camera recording video frames at precise intervals, then you should have a regular pattern of flashes, not a seemingly random series of flashes. This is over and above the numerous partially illuminated frames that clearly show the camera is just not doing things right.
Here’s my collection of several top strobe flashes in succession.
Click on the image for a larger version:
Is it the CMOS imager? Processing? Something else?
It’s really hard to say. Even if the CMOS imager is “scanning” or using a “rolling shutter” one would expect the scanning pattern to be exactly the same for every frame. And if every frame of video happens the same way, at the same interval, and you point the camera at a strobe firing at a regular interval, you would expect a very even pattern of “mistakes” to occur.
Not a completely random pattern.
Something is clearly amiss here.
I’ll be holding on to my three CCD HD camcorder till they can fix this horrible problem.