-hh wrote:
On Monday, September 10, 2018 at 12:38:17 AM UTC-4, Savageduck wrote:
-hh said:

wrote:
The SLR was a great idea when needed to have a seperate path for
viewing and film exposure, but with digital, the sensor can be the
viewing as well as the recording medium so perhaps less need for a
separate path via flip up mirror ?

It depends.

First, to drive two digital outputs (display + data recording) requires
the product to have more power ... both computational power and literal
power (battery).

...and so the MILCs which work do just that.

Understood, but the devil is in the details. The problem is that the classical
pro-MILC is that this is part of what allows a MILC to be smaller...but their
higher power demands works against this. As such, it isn't a "gimme".

WTF is a "classical pro-MILC"?
You don't seem to have an understanding of the capabilities of any MILC.
Second, an LCD display isn’t always a good thing to view through, as
there’s lag for example, which degrades tracking performance of moving
targets.
The classical optical path operates at 186,000 miles/second, which is a
few femtoseconds, whereas the digital display replacement requires
photon to electron reception on the CCD, followed by a data read, then
data transmit, data processing, another transmit, & finally to be
redisplayed. Even with current technology still takes bunches of
milliseconds...and try to see where this metric even listed in product
reviews: it’s already been found that in 3D VR simulators this delay
often causes nausea in human subject research volunteers (and thus,
limits/affects experimental designs).

What are you trying to say? We are not discussing 3D VR simulators.

The 3D VR sim stuff has been published in Open Literature.
Other stuff hasn't been published, so it can't be discussed in this forum.

So what?

The issue of temporal lag doesn't typically manifest itself today in relatively
benign (quasi-static) photographic shooting situations

So...

.... but that doesn't mean that it doesn't exist, nor that it will remain
unimportant.

The more that the engagement timeline accelerates (faster subject movement
& system track/panning, etc), the more critical the processing time becomes in
system performance, as well as the more that the temporal mis-synchronization
between sensory inputs will mess up the human.

That's why I said "what's the published performance data?".

....and cameras such as the X-H1, X-T2, and the new X-T3 have no problem
with faster subject movement, & system track/panning, etc..

Try one some day.


Have you tried one of the latest MILCs such as the X-T2, X-H1, or the
Sony a7III? ...and then there are the latest releases such as the X-T3
where there is no blackout even at 30fps.

This isn't about blackout.

MILCs today such as my X-T2 have EVF refresh rate of 100 fps.

Similarly, in pragmatic field use, one classical photography principle
is to put the sun at your back ... but this means that the sun is now
positioned so that it will illuminate your
LCD display & degrade its readability unless it’s shaded - such as
being designed with the same eyepiece cup as classical SLR’s. FYI,
shooting during Golden Hours results
in a much lower sun angle which can accentuate this as a problem...the
outcome is that the photographer needs to have a big fat head to make
shade to see what he’s framing.

You do understand that MILCs have an EVF which is used in much the same
way the traditional OVF is used on a DSLR.

I've not checked specific products, but that's precisely why I mentioned
the eyepiece in the above: that's the only simple way to assure that the
electronic VF won't get messed up by sun ... although there's still also
other factors.


Of course you haven't checked specific products, it doesn't sound as if you
have ever considered any MILC. Just remember, an MILC is not a phone
camera, or a P&S/compact without an eye level VF.

Try one some time you might be surprised.

Eventually, I will ... it just been a too-busy year...


OK! Once you do that get back to us.

My next camera upgrade will probably be to upgrade my underwater camera
system, and something mirrorless should be more compact form factor than
the ~8 year old Canon 7D dSLR with its UW housing that I'm currently using.


Then you have to buy whatever meets your needs.



--
Regards,
Savageduck