Radical shift in exposure controls with ISO feature
I just responded to a question about "pushing" a DSLR in the Wildlife forum and thought it might start an interesting thread here.
I find that the controls I use from shot to shot are quite different on a DSLR compared to on a film camera. This is due to the flexibilty of the "ISO" control. In the past, the ISO was set at the start of a roll and remained fixed through to the end. So my thinking regarding exposure revolved around the basic two controls: shutter speed and aperture. Now though, ISO is a third basic control for me. Before I was just making compromises on depth of field and action-stopping ability from shot to shot. Now I get to make compromises on noise as well, often allowing me to be more flexible in my choices for shutter speed and aperture.
Is anyone else out there revelling in this new freedom? Has use of a DSLR changed your shooting in other ways?
#1. "RE: Radical shift in exposure controls with ISO feature" | In response to Reply # 0Docklander Registered since 30th Oct 2002Tue 12-Nov-02 04:31 AM
This is a very worthwhile observation, Jon. Especially so for those of us who may still be of the film-based mindset (me, for example...) I do tend to stick at the 200 ISO setting, and convince myself that this is where the given shot needs to live. Mind you, after decades of Kodakchrome 64, having even 200 ISO at my fingertips is a relief in itself.
I never have liked grain in colour photography, but call it “noise”, and I will think that I like it even less. Yet, recently, I have had cause to use some of the ’faster’ sensitivity settings on the D100 (of course, I’d already run tests using these) and am pleased with the useability of the product of these settings, given appropriate post-production technique, and, not least, the right subject-matter (ie - those avoiding broad areas of continuous tone, unless obvious noise / grain can be tollerated, or else used as part of the graphic aesthetic of the image - which of course it can, in some instances.) Don’t ask me to go above 800, though - it’s scary up there...
You’re right to point-up the ‘on-the-fly’ ISO flexibility as a useful ’third lever’ between the creative choices of shutter and aperture. Thanks for your positive contribution. Now, bolt on that late 70s f8 fixed-aperture mirror-lens, get out of here and go find that tiger...