Additional Fstops
Aug 12, 2013 20:12:33 #
When a photographer says a particular camera gives him a couple of extra fstops, what is he referring to?
Aug 12, 2013 20:34:01 #
Aug 12, 2013 20:50:35 #
Yes. The question arose when I read a feature article in this months Popular Photography. The interviewer ashed the photographer what do you shoot with, and the photographer responded "I'm really into this CanonEOS-1DX that I got a year ago. It's basically a high-end sports camera, but I don't use it that way. It gives me a couple of extra F-stops......
Aug 12, 2013 21:03:48 #
The reference that you quote is about a camera body, not a lens. Doubling ISO is equivalent to 1-stop in aperture. Quadrupling ISO will yield 2-stops advantage.
Aug 12, 2013 21:04:52 #
Aug 12, 2013 21:05:12 #
Have a friend who used to manage a camera store.
One day he told me he had a customer who came in wanting to buy more f/stops.
One day he told me he had a customer who came in wanting to buy more f/stops.
Aug 12, 2013 21:08:34 #
GoofyNewfie wrote:
One guess would be because it has better high ISO performance.
Yup. Being able to cleanly shoot at or above 6400 can open up a world of opportunities.
Aug 12, 2013 21:21:56 #
Aug 12, 2013 21:31:14 #
Just think of a "stop" being twice as much or half as much light. In this case, it almost certainly referred to the ability to raise the ISO - maybe from 1600 to 6400 or 3200 to 12,800. Those would be two stops.
Aug 12, 2013 22:02:01 #
Image Stabilization. In much literature about lenses/cameras 'IS' is described as adding X number of f/stops.
Aug 12, 2013 22:20:49 #
Aug 12, 2013 22:53:40 #
"A camera with more stops" can also refer to a camera model with more dynamic range.
Dave Graham
East River, SD
Dave Graham
East River, SD
Aug 12, 2013 23:12:40 #
Aug 12, 2013 23:37:33 #
GoofyNewfie wrote:
Have a friend who used to manage a camera store.
One day he told me he had a customer who came in wanting to buy more f/stops.
One day he told me he had a customer who came in wanting to buy more f/stops.
Easy: Sell the customer a new, faster lens.
Aug 13, 2013 01:24:58 #
lindmike wrote:
Please use the Quote Reply tab, so we know to whom your request is directed.Please explain
CCD and CMOS sensors in digital cameras are notoriously shallow in exposure range, noticeably less than most color films.
Today, "expanding" Dynamic Range is a function of software programing, requiring multiple exposures, whether in camera or in computer. We call the process HDR for High Dynamic Range.
Read more here:
FAQ: Beginners Guide to HDR & Pseudo-HDR
http://www.uglyhedgehog.com/t-26491-1.html
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