If your CMOS sensor has a rolling electronic shutter and your mechanical shutter is indeed working properly, then you should get some distortion when photographing fast-moving objects:
Actually, if the 1/4000th is implemented using a traditional dual-curtain focal-plane shutter, you would expect to see a very similar distortion! (i.e. for shutter speeds greater than 1/200 the second curtain or blade is released before the first one has finished and so you get a "moving slit" for the exposure.)
My Nikon CP880, as noisy as it was for zooming and focusing, was pretty much dead silent when taking the photo. Actually, if I was in a quiet place, I could usually detect two very slight clicks, but not mechanical.makes that stupid sound also(my wife has one). Luckily you canand with this, my G1 (and i am assuming the G2), has a "shutter
sound" setting where you can turn on and off a fake mechanical
shutter sound.
turn it off.
-John
To keep up with 8FPS, wouldn't the round trip time just have to be less than 1/8th of a second? Am I forgetting something?
What do you mean by "mechanical shutter only"?
Sorry... At that hour 1/125 and 1/12.5 became the same in my mind.
Because there is none on the D30/D60 (CMOS electronic shutter that is).
How would it be possible to make an active pixel CMOS sensor without getting rolling shutter capability for free?
I'm just taking them at their word. I assume if they were using a hybrid-shutter like the 1D, they would:
Now since Canon designed this sensor, they could have left out much of the electronic shutter control circuitry perhaps making it more of a full-frame design?
Every digital camera on the market (except possibly some Kodak digital SLRs) has both a mechanical shutter and an electronic one, so I don't think you can draw any conclusions from the fact that the page mentions a mechanical shutter.
What would it mean to make a full frame active pixel sensor?
No, I'm drawing the conclusion from the 2 points I listed: that it includes ONLY the mechanical shutter in the specs AND the mechanical shutter type listed seems to be too expensive if it's really not used for exposure control. Obviously, it's possible for one or both of these to be wrong, but it's highly suggestive in the absence of other facts.
You are correct -- that was fuzzy thinking on my part and does not make any sense.
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Nikon indicates that they use both electronic and mechanical shutters on the D1X and the D1H, which have 1/16,000 max shutter speeds.
Some questions and answers which may be of interest.......
Except during Bulb mode, EOS-1D exposure times are always controlled by the CCD. However, the mechanical shutter protects the CCD between exposures and must be fully open in order for exposure to occur. The maximum mechanical shutter speed is therefore 1/125th, since faster mechanical speeds would result in a moving slit exposure rather than one where both shutter curtains are fully retracted. The noise you hear during a continuous shooting sequence is mostly the shutter charging motor and the reflex mirror mechanism moving up and down.
Hi Danny,
Except during Bulb mode, EOS-1D exposure times are always controlled by the CCD. However, the mechanical shutter protects the CCD between exposures and must be fully open in order for exposure to occur. The maximum mechanical shutter speed is therefore 1/125th, since faster mechanical speeds would result in a moving slit exposure rather than one where both shutter curtains are fully retracted. The noise you hear during a continuous shooting sequence is mostly the shutter charging motor and the reflex mirror mechanism moving up and down.
Ron,
