Timg30 wrote:
Debating topic with friends.
Scenario
High speed race cars.
Manual iso
Manual shutter speed
Manual fstop
Or
Auto iso
Shutter priority
What’s the pro con of each.
Have my opinion and preference but would like to hear other opinions.
Thanks
Personally I would never use Shutter Priority AE
and Auto ISO at the same time. Those are two different modes of auto exposure and mixing them together makes little sense to me.
If lighting is consistent, I prefer to use fully manual exposure.... setting my own choice of shutter, aperture
and ISO.
But lighting often isn't consistent enough to do that... maybe the actual lighting is changing. Or, maybe I'm tracking moving subjects in and out of shadows. Whatever the reason, there are times one form of auto exposure or another is called for.
If my primary concern is depth of field, be it shallow (large aperture) or deep (smaller aperture) and lighting is variable, I use Aperture Priority AE. I select the aperture and set the ISO myself, then let the camera determine a shutter speed.
If I'm most worried about freezing action (fast shutter speed) or causing deliberate motion blur effect (slower shutter), I use Shutter Priority AE. I select the shutter speed and the ISO, leaving it to the camera to decide what aperture to use.
When I really want to control both depth of field
and how motion is rendered in my image, but also need to allow for variable lighting, I'll use Manual + Auto ISO auto exposure mode. I only use Auto ISO with Manual. (When you enable Auto ISO along with it, "Manual" is no longer manual... it becomes another AE mode.)
In all the auto exposure modes, it's important to keep an eye on what the camera is doing, so that adjustments can be made if necessary.
I very rarely use Program AE mode. Mostly I just use it in situations where I very quickly need to take a shot in radically different lighting than I'd been shooting and don't have time to think about or plan my exposure. Also, using Program this way, with the turn of one dial I can quickly return to the setup I was using for the previous shooting.
In all the AE modes, Exposure Compensation is available to "tweak" the exposure, should the subject be unusually dark or light tonalities.
All the exposure modes... both auto and manual... have their purposes. Someone who only does certain types of photography might never need to use them all. For example, someone who only shoots in a studio... say portraits or product shots... might never need to use any of the AE modes at all. But many photographers will benefit from at least learning how the various exposure modes work and being prepared to use any of them, as might needed for different situations.