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RustyBug wrote:
DOF ... if that's what you're looking to observe, then you would NOT want to use the ground glass view. That would just be your regular EVF to see the effects of your DOF choices, etc.
Working with ground glass isn't about observing DOF, its more about obtaining a clear distinction of where your focus plane is. In certain regard, because the lens aperture DOF is a "gentler" transition, the ground glass is an intentional amplification of the difference, to provide a more distinct difference, making the focus plane easier to detect.
Ground glass could come in different levels of "fuzz" ... but, you could only install one, so you'd have to know if you like a little vs. lot. Also, ground glass could be ordered plain or with etchings (say rule of thirds grid, etc.).
One of the things about digital that we all dreamed of so long ago, was the ability to "have things our way" on command. Mostly, we tend to think of this in terms of film profile or ISO that can be changed in digital where it required a hard, physical sway in the analog era. Having an electronic ground glass "on demand" (with overlay options, etc.) that could be of different intensity (user choice) would be taking the premise of digital providing user change capability into the realm of the viewfinder, that once was relegated to hardware swaps.
Don't confuse wanting to see DOF displayed ... with the function of ground glass to differentiate the focus plane from the rest of the image. From zero, to mild to heavy, as you migrate from one end of the spectrum to the other, it is an (understood) quid pro quo of how much the DOF transition is revealed vs. removed, to heighten the visual response of things coming into the focus plane. Here, again ... it's been a long time (never for many) since folks have routinely used ground glass.
If you recall, when we went to DSLR ... we lost the 100% silver mirror, and (I forget the company) there was a 3rd party that offered some form of ground glass surgery / modification (details are mush). As we have progressed away from analog > digital, the experience of ground glass has become a further and further departure, and folks would certainly be understanding that they have forgotten (or never known) how to harness it in application. Having an electronic option for on / off ... or amount could be very nice. A bit to be noodled out for good implementation, but I wouldn't expect to retain DOF (accuracy) when using ground glass effect, to the same degree of DOF (accuracy) without it. It is intended to amplify the difference, rather than retain its accuracy. This then becomes a "learned" recognition (vs. an accurate one).
Not unlike how we don't see DOF in the RF presently. But, instead of using the alignment patch, it would offer a ground glass approach to differentiate the focus plane more strongly....Show more →
Sorry, but you misunderstand me. I'm mentioning DOF because any solution in this EVF Leica would be based on a TTL view of the image, i.e. unlike the optical rangefinder it would be affected by the lens and aperture used. If I understand the approach you want them to implement correctly, this change in DOF would probably complicate making it a consistent experience. But maybe it would be helpful if you explained in more detail how this ground glass emulation is supposed to work *digitally* (as apposed to coarser vs finer ground glass and use of fresnel lenses, which is the difference between DSLRs vs. older cameras)
You mentioned Panasonic's DFD before and imo that approach is not that useful for a manual focus camera as it requires the camera to compare two images set to different focus distances. Panasonic cameras used to do that by "pulsing" the autofocus, hence the infamous DFD wobble. On a Leica it would be "blind" most of the time until you start focusing the lens. Makes more sense to use the phase detection pixels on the sensor..
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would be the better technical approach ... I'll leave that the much more knowledgeable folks than I. Just thinking outside the box, at what "could be" ... vs. what everyone else has been doing. Kind of a leading vs. following thing, as long as Leica is taking up the challenge of EVF in an M.
