I like the narrow dof for some stuff. For things fast moving like the RC cars or animals it's easy to blur the wrong thing.
Up untill the 3rd firmware update on the Z8 about 2 years ago, I would have partly agreed.
Now I can choose from "let the camera figure it out", to vehicles, birds, animals, humans, and a bunch of others.
If I choose people, and a 135 f1.8 lens with 1mm of depth of field, and set continuous focus (no point using anything else on mirrorless) and video OR photograph at 20 / 30 frames per sec, the nearest eye pupil is razor sharp in every single frame. Even where that means the eye lashes are out of focus. Even during sports or a cyclist or someone doing squash. It just nails it. Regardless of movement even in a dark places. In a way that was quite impossible to do for ONE single static photo with a DSLRs. Why?
Subject and 3d recognition with AI and a real idea of WHAT to focus on is built in. It recognises what is in view. It knows what to focus on. It works even where the depth of field is literally 1mm thick like the F1.8 135mm lens. Or the wide open 600mm. Which is why they had to actually redesign all the large aperture new Z mirrorless lenses to BE as sharp wide open as when shut down a few stops like the past.
They now NEED to be razor sharp, wide open, at f1.2 or f1.8, because that now gets used all of the time!
In the past you could only do that critical focus accuracy by taking the best from half a dozen shots of a static subject because of three things:
1. DSLRs do not focus using the sensor. There is enough difference between the focus sensor under the mirror in the camera base and the actual sensor, and its repeatability to make focussing with 1mm of focus depth accuracy not actually possible. Simply not precise enough. Worse the temperature and in focus field curvature, and change of focus position as the lens F stop changes (DSLRs focus wide open, so wrong everywhere else) meant it is not possible to calibrate this anyway. So its set for an "average" on a DSLR. Focus direct on the sensor, at the aperture choosen fixes all of that and shows you what you will actually get too. And it does it at every aperture. And temperature. And the focus sensors, hundreds of them on the sensor, go right to the edges of the screen..
2. The cameras have MUCH faster processors and actually recognise the subject matter and figure out where to focus, and are fast enough to do this IN BETWEEN the frames at 20 or 30 frames per second. Seriously. So a bird in flight, has critical focus on its eye, as it takes off and flies over you, in every shot. On movies at 120FPS or pics 20 to 30 fps. Accurately enough for 45mp 100%.
3. Movies at 4k and 120 fps or faster can be raw, N LOG, etc. But because the camera is fast and has a huge 8k + sensor, it can do a 4x digital zoom, and image stabilisation of a 4k movie across the 8k sensor area from a moving sensor, with zero loss of quality! As thats by using the middle, or 1/4 of an 8k sensor... So it stabilises even hand held with a 600mm lens like its on a tripod! And allows a 4x digital zoom and super fast focus.
If set it to plane, vehicle, animal, bird, human, building etc it focusses on cockpit or windscreen. Or a humans eye, or a plastic driver head in your hobby car. If it cant see that, it focusses where you would! And theres a LOT of options on this focus system.
All I can say is that I had all the latest Nikon DSLR D850 and this thing is from 1000 years in the future in any sensible comparison. Well there just isnt really any comparison... Its way more capable than me. And its focus system (and everything else) is literally light years ahead of any DSLRs. It does what you would do, only it does it more accurately, instantly and I leave its focus on continuous 24/7. And it does this even at 30 frames per second...
And because of this, all the large aperture lenses are now laser sharp a max aperture. A step up. As they have to be to match the now accurate focus. It allows those that like the shallow depth of field thing to finally get to do this! And it cost an arm and a leg!
And best of all, NO SHUTTER. A stacked sensor, has super fast readout so no rolling shutter in movies. Or images. So nothing to wear out, adjust, or worry about. Noise? I regularly shoot at 32,000 or 64,000 (no not 6,400) and its really hard to tell the difference between that and 64. After DXO or latest adobe raw.
Yes I know shut up!
