Originally posted by Stavri Can you elaborate on your most common shooting conditions, indoor/outdoor, cloudy and type of subject?
I shoot in many kinds of conditions, and I am always surprised at the high ISO required to get sharp focus, decent shutter speeds, and lenses stopped down from wide open.
My history as a photographer involves a lot of film shooting in rainforest situations, which are very dark. Even in those conditions I was able to freeze animal motion, hand held with a 200mm 2.8 lens with film that never exceeded 800 ASA. With my K3 and the 60-250 f4 I feel I would be struggling with a slow shutter speed and lens near wide open at 3200 ISO. I know they are not entirely comparable as my 200 f2.8 was a stop faster, with a lot less reach. But still the ASA and ISO experiences are as if from different planets.
---------- Post added 01-17-16 at 10:20 PM ----------
Originally posted by jatrax Try a test in all manual and take a number of exposures from wide open to say f/11. Change only the aperture setting, leave everything else alone. Using the 100mm macro. Tripod and fixed target. Take a look and see if each exposure is different. They should be, but if not it would indicate a problem with the aperture mechanism.
It seems unlikely to me that there would be a problem with the sensor. You might also check to make sure you do not have some exposure compensation dialed in.
Yes, a rigorous test is a very good idea. Even better if I knew someone else with a k3 that I could test side. But I'm certain that the aperture stops down properly. And no, I don't have exposure compensation on unintentionally. I use it when a scene requires it, and then I restore it.
Everything works right--the pictures are sharp and the metering is good. The sensitivity just seems low, which I agree, seems very unlikely.