07-21-2012, 08:54 PM
(This post was last modified: 07-21-2012, 09:17 PM by Brightcolours.)
It actually means that you get a little bit more noise at for instance ISO 1600. The ISO settings are adapted (and they should be adapted).
So, you still get the same exposure with the same ISO/exposure time/aperture setting. Just a bit more gain in the signal, which will lead to a little bit more noise compared to a DSLR with the same sensor.
ISO settings are not about how sensitive the sensor is, but at defined to equalize exposure times no matter how sensitive a sensor is, in standard JPEG settings with the by the manufacturer chosen tonal curve. Quite freely chosen.
So, to answer your question:
Does this mean that if i shot at 1/250, F8 and ISO 1600 on both the cameras, the SLT image will be 1/3 stops underexposed compared to the normal SLR?
No, it does not mean that the SLT image is underexposed. It means the ISO settings are adapted to the lesser light.
If you want to study the this ISO standard (ISO 12232:2006) yourself, you can buy the documentation here: http://www.iso.org/iso/catalogue_detail....mber=37777
So, you still get the same exposure with the same ISO/exposure time/aperture setting. Just a bit more gain in the signal, which will lead to a little bit more noise compared to a DSLR with the same sensor.
ISO settings are not about how sensitive the sensor is, but at defined to equalize exposure times no matter how sensitive a sensor is, in standard JPEG settings with the by the manufacturer chosen tonal curve. Quite freely chosen.
So, to answer your question:
Does this mean that if i shot at 1/250, F8 and ISO 1600 on both the cameras, the SLT image will be 1/3 stops underexposed compared to the normal SLR?
No, it does not mean that the SLT image is underexposed. It means the ISO settings are adapted to the lesser light.
If you want to study the this ISO standard (ISO 12232:2006) yourself, you can buy the documentation here: http://www.iso.org/iso/catalogue_detail....mber=37777