Originally posted by Jannis What I mean: In certain situations I need some short shutter times, lets say 1/200. And I want to stop down aperture a bit (from 2.8 to 4, for example). I use K-5II.
My choices are:
TAv mode: In this situation set time to 1/200 and f4 - and AE will set ISO - But if it is brighter, then it sets ISO to 80 and overexposure by large margin. Ok, I set time to 1/400 - but again when come to darker area, it turn ISO to 800 or 1600 and I have more noisy picture than is necessary - because 1/200 will be sufficient.
Tv mode: this will set aperture to full open in darker situations - but I need it close a bit.
Av mode: This may be the right one, but: If I choose aperture it calculate time that I can handhold, yes (with 200m it is 1/60) - but it is too slow for my subject!
What I am looking for? I need shutter limiter in Av mode (In work I have Nikon D5100 - and it has it) - I would set automatic ISO and minimal shutter (for example 1/200). If conditions are darker, it pumps up ISO, if brighter it set ISO to the lowest value and pump up shutter...
Is there already some feature like this - And I am only not able to find it? Or not? If so, is there any workaround?
Thanks for your help.
The K-3 (and I think the K-5) has a programmable ISO setting when using auto ISO modes. For instance, in Av mode, you can set f/4 and the camera will choose the shutter and "correct" ISO. But you can tell it which to prioritize with slow, standard, and fast settings.
Standard will get you a low shutter speed threshold of (around) 1/1.5*f before upping the ISO (i.e. a 30mm will have a low shutter speed of 1/50). This will give you a nice balance between shutter and noise.
Slow will protect the ISO by one stop by allowing a full stop lower speed (in our example above, you'll get a 1/25 low limit). This will give you less noise at the expense of shutter speed.
Fast will be more ISO-aggressive by, again, one stop (so you'll end up with a 1/100 shutter speed in the above example). This will give you a faster shutter, but more noise.
There's always a trade off. The best option is M mode. Do it yourself and get it right. You should be smarter than your camera anyway.