fredmiranda.com
Login

  

  Previous versions of NonDecaf's message #15300777 « R5 drop to 13 bit on 12fps mechanical »

  

NonDecaf
Offline
Upload & Sell: Off
Re: R5 drop to 13 bit on 12fps mechanical


InnomnateViem wrote:
i see the reasoning but i agree to disagree.

An electronic shutter operates by turning the cameras imaging sensor on and off to control exposure. ... An electronic shutter has no mechanical parts, which allows it to achieve faster frame rates than a mechanical shutter.

the ES by definition frees up resources of the Digi X. theoretically, this should enable the camera to pass a higher data rate or faster A/D coversion. than when the camera has to use more the DIGI-X's resources for the calculations, timing, switching, opening/closing the mechanical shutter and controlling the 1st/2nd curtains and mirror. ie the DIGI-X has to perform less calculations for the ES HS+ mode of operation.

i would be willing to say that the camera may possible even run cooler in the ES High Speed+ mode.


Hmm, that's interesting. The shutter speed should be a simple timing signal for the motor circuit that drives the shutter, no? Why would the Digic X be involved in any calculations ?

Also, with EFCS + rear-curtain mechanical, it seems to me like the read-out should *still* be identical an electronic shutter read-out (except for the bit depth, which is only enabled on the full ES mode for even faster readout) , except that the mechanical shutter (after closing) blocks the light from coming through, so the slow readout (if present) doesn't affect the image because there is no further light hitting the sensor.






Jul 30, 2020 at 11:37 PM
NonDecaf
Offline
Upload & Sell: Off
Re: R5 drop to 13 bit on 12fps mechanical


InnomnateViem wrote:
i see the reasoning but i agree to disagree.

An electronic shutter operates by turning the cameras imaging sensor on and off to control exposure. ... An electronic shutter has no mechanical parts, which allows it to achieve faster frame rates than a mechanical shutter.

the ES by definition frees up resources of the Digi X. theoretically, this should enable the camera to pass a higher data rate or faster A/D coversion. than when the camera has to use more the DIGI-X's resources for the calculations, timing, switching, opening/closing the mechanical shutter and controlling the 1st/2nd curtains and mirror. ie the DIGI-X has to perform less calculations for the ES HS+ mode of operation.

i would be willing to say that the camera may possible even run cooler in the ES High Speed+ mode.


Hmm, that's interesting. The shutter speed should be a simple timing signal for the motor circuit that drives the shutter, no? Why would the Digic X be involved in any calculations ?

Also, with EFCS + rear-curtain mechanical, it seems to me like the read-out should *still* be identical an electronic shutter read-out, except that the mechanical shutter (after closing) blocks the light from coming through, so the slow readout (if present) doesn't affect the image because there is no further light hitting the sensor.






Jul 30, 2020 at 11:35 PM





  Previous versions of NonDecaf's message #15300777 « R5 drop to 13 bit on 12fps mechanical »