I am not yet convinced the 645z has a resolution advantage if conditions are becouming harrder, i.e. landscape, sky completely cloudy, a lot of low contrast details. Off course, resolving a little bit more in direct sun light, with high contrats, is easier, but even then 40 vs. 50 MP is not alot. The full size Pictures I have seen up to now are all disappointing in terms of Details, not really bad, but not yet reaching what I get using my 645D.
So there is certainly the higher dynamic range, 2 stops more. But this is only an advantage if there are really more than 12 stops in the thing you take photos of. Very often, there are only 6 to 10 stops. So it is a bit like a car being able to run 150 miles an hour. Nice, if you are on an empty German Highway, as there is no Speed Limit. But not a big difference to a car just doing 100 mph, if you are on an American Highway.
I have chosen not to buy the 645z. I will buy a second 645d instead, just to be on a safe side if mine Needs repair. Might have been choosing different if the 645z would have had a Nikon Multicam 3500 AF module or something really equivalent, but it hasn't. It is better than the 645D in terms of AF, sure. But still far away from the top AF modules Canon and Nikon have. So I stay with the Nikon DSLR for Action photography. And use the 645D for landscape, I have rarley things having more than 12 stops dynamic range, nor use more than ISO 400 frequently for htese things. I can save a lot of money like that!
The very hihg dynami range can in many cases in the landscape also bee achieved by using a 2 stop graduated filter on the 645D. That's a bit more work,, but a lot cheaper (an MC Version build of glass, not plastic, costs 200 to 250$). And the high ISO becomes intersting with the combinatation of a Multicam3500.
A used 645D is in the 3500$ range. That's a good Price!
Last edited by donesteban; 08-14-2014 at 11:34 AM.
|