I recently bought a D90 with a Sigma 1.4 lens. So I've turned off the AF illuminator (and of course the flash). It seems to focus well in low light, but the camera has a difficult time determining proper shutter speeds (with the aperture set to 1.4 in aperture priority mode). In my practice runs at home the shutter speed comes out 1/6 sec. So I just get a bright blurry picture.
Sorry, but this is the EXACT reason I hate the semi-automatic modes. I know others love them, but to me, the loss of control in my exposure, just sucks.
Any suggestions? Do people set their DSLR's to manual mode and dictate the shutter speed, or is there a way to tell the camera to not go to so low of a shutter speed? What are everyone's preferred settings?
I shoot 100% in manual mode. I just cannot see going into a dark ride and doing something differently (well, I can't shoot in any semi-automatic mode at any time because I'm so trained to do manual).
In every ride and the lights are different, but once you dial in on an exposure, MOST of the time, that exposure is pretty consistent throughout the entire ride. Pretty soon, you get good enough that you can start guessing your settings and have it, if not right on, at least accurate enough that you can make quick adjustments.
But today -
For the Great Movie Ride, my settings were ISO 1250, f2.8, 1/40.
Sci-Fi Drive In - ISO 2500, f2.8, 1/20
Voyage of the Little Mermaid - ISO 2500, f2.8, 1/80
Oh... and one of the biggest mistakes I see people do is blowing out their highlights or making scenes TOO bright when trying to shoot. Disney created the dark rides with shadows to preserve the overall look of the scene. I see too many people ignoring that and trying to make the shadows too light. So, meter for the brightest part of you scene and then shoot from there. Let everything else fall into shadow. You'll preserve so much more of the ambience of the scene that way.
(PS - I wish I could pull some examples off my camera tonight. But I left my firewire card at home and for some reason, the USB cable I had in my bag isn't working. So I have to wait until Monday when I do a shoot out at the beach to borrow hers. Then I'll be able to show some examples.

)