Originally posted by normhead Actually low light performance is a huge part of DxO's rating and the 645z blows away all their favourite cameras in low light. And you call landscape photography "controlled light>" Well no, that's erroneous. You take a studio with no windows, and s few racks of lights on the ceiling and 20 or thirty movable light platforms around the edges, that is controlled light. Outside in the sunshine with various atmospheric effects, humidity, and the odd cloud from time to time, that is not controlled light. IN fact you have no control over the light. You take what you get. Landscape photographers love the 645z because of the incredible resolution and dynamic range. So, yes I would expect an evaluation of the 645z to exceed all other cameras, even in DxOs biased opinion, in everything but sports.
Hm . . . . That is true and that is not.
A really good and experienced landscape photographer who knows what he or she is doing knows exactly what lighting situations translate to their "vision." He has a scenery, and a vision of what he wants this scene to look like when printed; and he knows that only a certain set of conditions that can work for him. It is as you say very true that you cannot control outdoor lighting let alone humidity, atmospheric pressure effects etc. But, a good one at that will wait until that set of conditions are met, or that he can instantly recognize them when he sees them or accidentally run into them, and knows by experience what set of exposures and ISO and shutter speeds that can work, purely based on the capabilities of the equipments he uses. If the conditions are not "met," then he won't bother setting them up. He would come another day, or look for another compelling scene. Much of the concept of what he wants is complied not during the actual act of shooting, but when he day dreams about it, much like a novelist ponders the plot of the next novel he is going to write.
It is true that with the advancement in dynamic range of the sensors these days one can certainly take pics, and manipulate to make them look like what he has in mind to begin with. Or that one can also just randomly take pics, take them home, and post process them to death until they look "cool." There is absolutely nothing wrong with either of those methods. It certainly takes quite a bit of skills and experience to go this route. Both methods can certainly yield dramatic results.
Having said that, who I consider to be superb landscape photographers that I have seen and met tend to fall in the former group of photographers, although again there is nothing wrong with any of these methods, mind you. For me, the part of the thrill of being a landscape guy in some ways lie in the accidental and truly random nature of it - capturing moments that I may never ever see again in my life time, and the fact that I was there for that moment is in fact far more special than the fact that I actually captured them. But, in the end the lighting and such is very much "controlled" in the mind of a shooter, if you will.