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p.1 #18 · p.1 #18 · Rumor: X-T1 firmware update to bring 1/32000 shutter speed! | |
sflxn wrote:
Wow, this thing is actually real. I gotta eat crow then.
I'm impressed you came back to admit that. When I saw today's announcement I actually thought of your previous post. Kudos!
I'm very curious about how they did this. If it is a base Sony sensor as everyone believes it is, how did they do this? Could it be upcoming tech that Sony gave Fuji early access?
It actually isn't rocket science at all and pretty much every sensor on the market from Sony and nearly everyone else is capable or very close to capable of doing this. If you support video you can do a stills electronic rolling shutter. In fact all the NEX cameras have used first curtain electronic shutters for a long time now and so that's a big reason to expect that the sensors already supported everything they needed for electronic rolling shutters for still photography. The question is whether you think the feature is worthwhile supporting given the trade offs...
The main trade-off is jello effect. I've yet to see anything specify what the readout speed of this 1/32000 mode is. I'm guessing it is around 1/10 to 1/20th in which case it will be of little utility for fast moving subjects or hand-held telephoto. Once you try to support a faster read-out than that you start to lose DR (this is the case with the GM1 and GH4). So it is quite possible Sony sees no need to implement this on their cameras even if the sensors have supported it all along.
Another possibility is adding the e-shutter into the layer on top of the sensor. There was a Nikon patent a few years ago for this exact technology. They put the e-shutter into the AA filter or the CFA.
I haven't the foggiest how that would work, but I think you are confusing e-shutter technologies. This is a rolling shutter, something pretty much every CMOS sensor since the beginning of CMOS sensors has supported in one form or another. Most only use it on video, many do use it for a first curtain (that'd be almost all NEX and most Canon in liveview mode) and a few use it as a optional stills electronic shutter (most Panasonic and now Fuji too).
What you are probably thinking of is a global electronic shutter. No one implements those for consumer cameras, way too big a hit in IQ - takes up lots of sensor area and thus reduces noise performance quite a bit.
Cheers!
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