RE: how dark was it really? calculating with ISO, shutter speed, and aperture

2012-12-16 Thread Bob W
From: PDML [mailto:pdml-boun...@pdml.net] On Behalf Of Charles Robinson I was in a park in Nevada (Valley of Fire), the sun was setting, it was getting difficult to see. I took some photos which came out OK - and due to the ability to tweak white balance, exposure, etc, it looks like the

Re: how dark was it really? calculating with ISO, shutter speed, and aperture

2012-12-16 Thread Charles Robinson
On Dec 16, 2012, at 4:12 , Bob W p...@web-options.com wrote: You can find the exposure value (EV) for the particular iso, shutter speed and aperture that you used, but that only tells you how dark the meter thought it was. Without a reference value you're going to have to rely on your

how dark was it really? calculating with ISO, shutter speed, and aperture

2012-12-15 Thread Charles Robinson
I was in a park in Nevada (Valley of Fire), the sun was setting, it was getting difficult to see… I took some photos which came out OK - and due to the ability to tweak white balance, exposure, etc, it looks like the photos were taken at a regular time of day. But I was there, and I KNOW it

Re: how dark was it really? calculating with ISO, shutter speed, and aperture

2012-12-15 Thread Bob Sullivan
Charles, I don't know, but wonderful colors for the dark. The picture I just posted with the 55mm was lit by 1 candlepower. It shows ISO 3200 @ f2.0 and 1/15 sec in lightroom. I suppose you could translate... Regards, Bob S. On Sat, Dec 15, 2012 at 7:38 PM, Charles Robinson charl...@visi.com

Re: how dark was it really? calculating with ISO, shutter speed, and aperture

2012-12-15 Thread David Parsons
http://en.wikipedia.org/wiki/Exposure_value#EV_as_a_measure_of_luminance_and_illuminance On Sat, Dec 15, 2012 at 8:38 PM, Charles Robinson charl...@visi.com wrote: I was in a park in Nevada (Valley of Fire), the sun was setting, it was getting difficult to see… I took some photos which came