Olympus 35sp question

[buzztul]

Does anyone know of a chart showing the aperture and shutter speed chosen by the camera for specific EV setting on auto exposure? I realize it may change for different ISO settings, but thought someone might have done the work on this.

Thanks for your help.


buzztul

 

[julio1fer]

Andrew Yue has published an explanation and a graph herel. I'd say that his graph is intended for ISO 100.

The autoexposure behaviour is quite linear, i.e. it simultaneously reduces speed and increases aperture as LVs go down.

 

[divewizard]

Does anyone know of a chart showing the aperture and shutter speed chosen by the camera for specific EV setting on auto exposure? I realize it may change for different ISO settings, but thought someone might have done the work on this.

Thanks for your help.


buzztul

The Olympus 35SP automatic exposure chart

When you set the ISO it adjusts an aperture in front of the light sensor for the meter. The EV (exposure value) the meter reads is the EV for that ISO setting, so the thick line on the chart gives the automatic exposure for the EV you read in the meter no matter what ISO you have the meter set for.

I scanned the chart from a Japanese version the Olympus 35SP manual that came with my camera.

 

[buzztul]

Thanks to both responders. If I am reading the chart correctly, an EV of 11, e.g., would result in an auto exposure setting of f5.6 at 1/60 of a second with the EV having been adjusted to take account of the ASA setting. That is good to know and I appreciate the help.

 

[divewizard]

Thanks to both responders. If I am reading the chart correctly, an EV of 11, e.g., would result in an auto exposure setting of f5.6 at 1/60 of a second with the EV having been adjusted to take account of the ASA setting. That is good to know and I appreciate the help.

You are reading it correctly!