At a recent air show I used "M" with Auto ISO so I could quickly change the shutter speeds to get different prop blur effects without changing the exposures or the aperture. I could spin the rear wheel between shots to pick the speeds I needed for various planes from Tiger Moths to Spitfires.
Is there a way to automate this on a D300? Is it possible to fire a set of images each with a different shutter speed but the SAME aperture and exposure without spinning the wheel.
#1. "RE: Shutter Bracketing with fixed exposure" | In response to Reply # 0robcran Nikonian since 22nd Mar 2007Wed 07-Nov-12 07:53 AM
I just did the experiment with my D300 taking shots of a piece of paper in my office.
I set Exposure mode to Manual
ISO to AUTO ISO
Aperture to f4.8
I set shutter speed to 1/125 which was the meter reading for that shot
I set bracketing to 3 shots one stop apart
I set high speed continuous shutter mode
Three images all with I?SO 500, all with an f stop of 4.8, and three different shutter speeds - 1/60, 1/125/ 1/250. You could get finer gradations of shutter speed by adjusting the EV spread in the bracketing function.
To be honest I don't quite understand why the camera changed shutter speed rather than aperture; but there you are.
#2. "RE: Shutter Bracketing with fixed exposure" | In response to Reply # 1Leatham Nikonian since 09th Jul 2012Wed 07-Nov-12 08:38 AM
If your ISO and aperture didn't change then I assume you would now have three different exposures.
I wanted to keep the aperture constant to get the depth-of-field I preferred and get three shots with identical exposures but each with a different shutter speed. That way I would have three different choices of prop blur for my Tiger Moth photos. I want the camera to change ISO as I shoot to compensate for differing shutter settings.
I will stick with spinning the rear wheel between shots unless a more streamlined solution presents itself. This method works fine. I can see the ISO reducing as I slow down the shutter.
#3. "RE: Shutter Bracketing with fixed exposure" | In response to Reply # 2briantilley Nikonian since 26th Jan 2003Wed 07-Nov-12 09:17 AM
You're already doing this the most efficient way
If you want to have control over shutter speeds and aperture and still get the same "correct" exposure by having the camera choose ISO, Manual mode with Auto ISO is the answer. Any greater degree of automation would prevent you choosing the speed or aperture that you want.