The article quotes -
f/16 at ISO 200 and a shutter speed of 1/200 seconds is good for a sunny day
on our overcast day at f/11 and ISO 200, increase the shutter speed from 1/200 seconds to 1/400 seconds
On a really cloudy day, an aperture of f/8 would be needed, so at ISO 200, a shutter speed of 1/800 would be necessary
Unless I'm not thinking straight, surely that info is incorrect?
f/16 & 1/200s, f/11 & 1/400s, and f/8 & 1/800s, are all equivalent exposures at constant ISO. Therefore, as there is less incident light available when there is cloud cover, any one of these pairs of values is going to under-expose the image on the duller days.
In my opinion, the histogram in a good digital camera, used thoughtfully, is the best guide to a good exposure.
Dead right, also, it's a peculiar page that I get, lot of scrolling, to get little. Ed.
Jan 25, 2016, 16:26
(This post was last modified: Jan 25, 2016, 16:27 by GrahamS.)
The article also says that "the f16 rule measures incident light"!!!
It doesn't measure anything. It's just a rule of thumb. I think the author should stick to his/her day job..
Measures = based on? Huh?
A camera is no longer just a black box with a lump of glass over a hole at one end and a light sensitive material at the other. Most people have paid good money for the amazing technology built into their modern cameras - for goodness sake, use it. Taking photos is now almost cost free, so practise taking lots of shots - to gain understanding of the camera's electronic metering system and to learn how to interpret the displayed histogram for each image. Those are the best guides to good exposure.