Originally posted by Rondec I don't shoot under exposed to be safe. I shoot underexposed because I shoot landscape with high dynamic range and post process my images to death after the fact. Jpegs don't work for me and honestly, I get more from looking at a scene with my eyes before I ever raise the camera to my eye and look through the viewfinder. Because what is important first of all is light and subject and if those aren't there the rest is futile. The viewfinder is only about focus and composition.
A sharp, well focused image of a mediocre scene is a mediocre photo. Even the best EVF in the world won't change that.
I meant you shoot underexposed in order to make sure that the highlights are all there... that's how I understood it. You don't trust the meter enough that it protects all highlights. Same holds true for me. The advantage that you'd have from using a mirrorless camera with EVF is the same that I have: Instead of generally underexposing, even where it may not be necessary, I can judge more precisely (not perfectly, mind you) in the EVF and dial in just the right values. When a channel, like for example blue, is overexposed, I'm getting blinking lights. I can change the exposure. As it IS using a JPEG as basis it is quite conservative, but that just makes sure that I'm getting the most and best data for post processing. If you underexpose in general, like I used to do and sometimes still do, you might end up with severely underexposed images that need quite a boost and thus are noisier than necessary.
As for looking at a scene before raising the camera to the eye... that's a good thing, and I try to do the same. The camera doesn't matter. You can even do that with a smartphone. I'm also having a couple of lines displayed in the viewfinder to aid me with the composition.
I think the difference between DSLRs and mirrorless is that you get a clearer image of what you're getting with mirrorless, while with DSLR, there needs to be more experience to get exactly the right settings. Given enough experience with a camera, a photographer can estimate what the exposure meter is going to do and blindly dial in the required compensation. And like BigMackCam said, a DSLR shooter needs to be able to imagine the results while the mirrorless shooter will see the result. The G9 even adjusted the viewfinder image to the shutter speed settings, i.e. if you set it to 1 second, the viewfinder would be updated once every second. That makes it rather easy to get the results that you wish to get. WYSIWYG basically.
As such, I think it's clear why newer photographers tend to enjoy mirrorless cameras. It doesn't require the experience. And for those who do have the experience, there is no disadvantage. This explains the popularity of these cameras.