October 7, 2015
Yesterday we shared with you Brushfire Photography‘s wonderful Fuji 400 Exposure Test to show off how Fuji handles over exposure. Well today we want to bring you the exact same thing, except with Portra 400. In case you missed yesterdays post, that covered all the details about the shoot, Mike took an external spot metering with a Sekonic 508 spot meter. Rated at ISO 200 it showed 1/8000 f/2.0 for the sky and 1/60 f/2.0 for the shadow behind the girls ear in her hair. The ambient meter reading was 1/125 f/2.0 where he took a reading bulb in 45 degrees to the ground facing her.
Mike likes to rate his Fuji 400 at 200, which is how he metered. He rates his Portra 400 at 320. So these reading would likely be the same or possibly a one bump up in shutter speed or drop down in aperture.
It was an overcast day so the test really shows the affects mainly of overexposure. It would be good to do another exposure test that emphasizes the affects of underexposure. Make sure you to check out the Fuji scans so you can compare. Scans by Photovision.