Electronic global shutter is coming...

[Guillermo Luijk]

In other forum we are collecting data about sensor readout times in electronic shutter mode (if you want to contribute find a straightforward tutorial to calculate this parameter here). When plotting the evolution some questions arise (the last value is the Olympus E-M1 II sensor readout: just 16ms or 1/63):



Are we really so close to electronic global shutter as the linear trend indicates? will this be the final advantage (being able to freeze any kind of movement in complete silence, so as avoiding all mechanical pieces moving dust inside the camera body) to prefer mirrorless systems over Canikon DSLR's?.

Regards

[scyth]

In other forum we are collecting data about sensor readout times in electronic shutter mode (if you want to contribute find a straightforward tutorial to calculate this parameter here). When plotting the evolution some questions arise (the last value is the Olympus E-M1 II sensor readout: just 16ms or 1/63):



Are we really so close to electronic global shutter as the linear trend indicates? will this be the final advantage (being able to freeze any kind of movement in complete silence, so as avoiding all mechanical pieces moving dust inside the camera body) to prefer mirrorless systems over Canikon DSLR's?.

Regards

this illustrates just the progress of the old rolling electronic shutter and more so just with miniscule mp-wise cameras (not 40-50+ or 50-100+ mp ones)... more so CMOS sensors up to FF size exist right now with true global shutters but as usual you are by definition giving up either/both DR or/and mp count... even sensors with stacked DRAM behind are not going to solve the problem

[davidgp]

Well... CMOSIS, the company that makes Leica sensors, already has a full frame CMOS sensor with high megapixel count and they say wide DR - http://www.cmosis.com/news/press_releases/industrys_first_global_shutter_48mpixel_cmos_image_sensor_from_cmosis_supports_8k_image_resolution

Not sure if we will see it in any camera apart from Leica or video oriented one like RED or Alexa...


Enviado desde mi iPad utilizando Tapatalk

[Guillermo Luijk]

this illustrates just the progress of the old rolling electronic shutter and more so just with miniscule mp-wise cameras (not 40-50+ or 50-100+ mp ones)... more so CMOS sensors up to FF size exist right now with true global shutters but as usual you are by definition giving up either/both DR or/and mp count... even sensors with stacked DRAM behind are not going to solve the problem

These are the kind of sensors most people have, being MF with tons of Mpx the rare exception. Another point is if sensor designers could achieve electronic rolling shutter sensor readouts get close to mechanical rolling shutter delays (I estimated 1/444s for the Canon 7D, not too impressive); nobody would complain about rolling shutter artifacts so in practice would perform the same as global shutter.

Regards

[scyth]

Well... CMOSIS, the company that makes Leica sensors, already has a full frame CMOS sensor with high megapixel count and they say wide DR -

nope, DR was as expected sacrificed = "Dynamic range 64dB (binning: 68dB)"  .... divide by 6.

[scyth]

These are the kind of sensors most people have, being MF with tons of Mpx the rare exception. Another point is if sensor designers could achieve electronic rolling shutter sensor readouts get close to mechanical rolling shutter delays (I estimated 1/444s for the Canon 7D, not too impressive); nobody would complain about rolling shutter artifacts so in practice would perform the same as global shutter.

Regards

but of course... as mechanical shutter blade travels across the sensor with x-sync (slightly faster yes) speed then electronic rolling shutter that can achieve the full sensor readout (w/o noticeable sacrifice in readout noise) at the same speed will be just fine for absolute majority still photographers... but outside of small sensors mp race still goes on.