Fast shooting adjustments? Two hands? Yes, these are the same kinds of issues young andy Westlake brought up in the dPreview hands-on preview piece today. A lot of the complaints are coming from people who have NEVER actually owned and used a camera that's layed out this way, and I interpret most of these sour grapes type comments due to two things: 1) It's priced out of the reach of most people, since as we know, the $400 Nikon D3100 from three years ago is the biggest selling Nikon in terms of volume... and 2) It's a well-proven way of controlling a camera that HAS BEEN and WAS used successfully by millions of people, for decades in a row and 3) It confuses newcomers who have no idea of how to "actually use" a camera this sophisticated.
For example...this is a PRO Nikon. Why do I say that? Full weather sealing, magnesium chassis, a very large, very bright viewfinder with the ROUND eyepiece (a sure tip it's a pro body), and it also has the separate, fully-customizable DUAL AF-Lock/AE-Lock and separate AF-ON buttons, like a D1x, D2x or D3x has. Given the weight of this body with the small battery, it's a good bet that the pentaprism is flagship-level bright, clear, and sharp; Andy Westlake raved about the view through the finder eyepiece.
As to the ISO dial being top left: YES!!!!!!!!!!! I adjust my ISO at most once or twice an hour on most days....on some assignments, many in fact, I will set the ISO level and leave it there for 500 to 800 frames, so the "can't adjust my ISO when looking thru the viewfinder" is basically a lame 'negative' we hear mostly from people who dick around with the ISO all the time. Same with the M A S P or exposure mode control...I leave mine in A much of the time...when shooting flash I ALWAYS put the camera in M mode. ALways,always,always; I think in 13 years with a d-slr, I have shot maybe 25 flash pictures in P mode, back with my D1 in 2002. The exposure comp dial...it's on top, and has a locking button...that's because the "old way" of shooting using exposure comp is using it as an "offset" to refine the exposure the meter gives, to protect one's highlights, or to compensate for a specific background that has unusual brightness or darkness. With a modern, color-aware Nikon that meters the reflectance and color and distance to the subject, the in-camera meter can make adjustments pretty easily, so exposure compensation is not needed all that much these days, but it CAN be used to compensate for backlighting, or very DARK backgrounds, or when metering in spotlighted situations,etc.. Exposure comp is a tool, not a crutch. If you "need" to use it every frame, you need to learn how to shoot better, or meter better. In SPot or heavily C/W metering modes, you almost never,ever use Exp. Comp. Amazing--a made-up problem goes away if you know how to meter!
But the whole, "I can't yo-yo my ISO up and down and all over the place while looking through the finder," complaint is a joke. News FLASH--LEARN TO SHOOT, and you will realize that adjusting the ISO every 5 minutes marks you as a newbie. If one insists on holding the camera up to his eye so that he can see the ISO values in the camera finder, just to be able to adjust the ISO, it marks him not only as a newbie, but as a petulant newbie unable to adapt to even the most minor deviation from the way he's learned to operate a camera. The ISO thru the finder issue...OMG...if one needs constant ISO adjustment, the Df has AUTO ISO setting capability, and the Max ISO it will run up to will be displayed, on top of the camera, at ALL TIMES, constantly,without the need to push a button and go to a menu to review the AUTO-ISO settings. Full-time, full disclosure information, right where it needs to be to be seen, and adjusted without menu-diving.
Again, this body has an AE-Lock AF-LOCK button AND a separate AF-ON button on the back. There will probably be at least SIX options for how to configure these two buttons, either interlocking the AE lock with the focus lock, or separating them, or even switching BOTH buttons to be AF-ON function, which is the last option. Again, these are PRO-level, flagship Nikon functions that have been around for a decade, and the kind of user that will want this camera understands one thing: this camera can be customized far,far more than a D3200 or D5100 or most other consumer bodies.
Anyway, I'm intimately familiar with the pro-level Nikon bodies and how they can be set up to meter and focus. For every complaint I read about the Df, I can think of a counter-argument. It's a shame that the MAJORITY of people writing on-line about this new body are producing shoddy,shoddy "journalism", filled with editorializing and idiotic comments, instead of reporting accurately and dispassionately about the facts. Most of the younger web and YouTube commentators are so green and wet behind the ears that they're literally blind to the reasoning that went into engineering this camera, and its feature set. It's pretty amusing. But then...these are people with 4 or 5 years of experience, and they have no concept of "how" to actually shoot, other than with digital control equipment. They just do not have the actual experience to understand that "analog" controls are not, by default, a limitation, or a handicap, and in some cases are actually easier to use, and show more information, at a glance. In the on-line materials I have seen, almost every single writer's complaints are in the areas the camera is "different than what he himself understands, or different from what he is personally used to". Or...as mentioned, that it's too expensive. Or it's not like his D3100 or his D90. No chit. It's a pro-oriented Nikon.