Digital = End of SLR ?

Since=20digital=20provides=20an=20ongoing=20image= 20of=20what's=20=
to=20be=20captured,=20I'd=20have=20thought=20that= 20SLR=20technolo=
gy=20would=20be=20phased=20out,=20yet=20still=20se e=20a=20lot=20of=
=20Digital=20SLR=20.=20What=20am=20I=20missing=20?

In article ,
wrote:

Since digital provides an ongoing image of what's to be captured, I'd have
thought that SLR technology would be phased out, yet still see a lot of
Digital SLR . What am I missing ?

latency.

slrs have an optical viewfinder, which has zero latency. even the best
digital camera has latency. it's short enough for most things but not
all.

On=20Sun=20May=205=2016:21:57=202019=20nospam=20=2 0wrote:
, =20casagiannoni=
@optonline.net
=20wrote:

=20=20Since=20digital=20provides=20an=20ongoing= 20image=20of=20w=
hat's=20to=20be=20captured,=20I'd=20have
=20=20thought=20that=20SLR=20technology=20would= 20be=20phased=20=
out,=20yet=20still=20see=20a=20lot=20of
=20=20Digital=20SLR=20.=20What=20am=20I=20missin g=20?

=20latency.

=20slrs=20have=20an=20optical=20viewfinder,=20whi ch=20has=20zero=
=20latency.=20even=20the=20best
=20digital=20camera=20has=20latency.=20it's=20sho rt=20enough=20fo=
r=20most=20things=20but=20not
=20all.

Not=20being=20an=20expert,=20I=20assume=20latency= 20is=20a=20sligh=
t=20delay.=20So=20then=20an=20SLR=20must=20have=20 it's=20own=20lat=
ency=20while=20the=20mirror=20flips=20up=20?

In article ,
wrote:

Since digital provides an ongoing image of what's to be captured, I'd have
thought that SLR technology would be phased out, yet still see a lot of
Digital SLR . What am I missing ?

latency.

slrs have an optical viewfinder, which has zero latency. even the best
digital camera has latency. it's short enough for most things but not
all.

Not being an expert, I assume latency is a slight delay. So then an SLR must
have it's own latency while the mirror flips up ?

the latency is in the viewfinder.

with optical viewfinders, there is no latency (that can be measured).

with digital viewfinders, the image has to be read out of the sensor,
processed, then sent to the lcd display. that is *not* zero. it's short
enough for most things, but not short enough for everything (and can be
annoying).

the mirror flip is also a latency, but with digital cameras, there is
also a latency before taking a photo, where the sensor has to be
flushed, the shutter closed, then opened/closed for the photo and then
returned to viewfinder mode.

some digital cameras are always recording and claim zero latency by
using whatever image when you pressed the button. a few of them save
images *before* you pressed the button, so you won't ever miss the
magic moment. some create short videos leading up to the final image
(live photos).

On Sun, 05 May 2019 19:44:47 GMT,
wrote:

Since digital provides an ongoing image of what's to be captured, I'd have thought that SLR technology would be phased out, yet still see a lot of Digital SLR . What am I missing ?

You are missing the focussing problem. It is only now that accurate
and fast focussing does not necessarily require a device separate from
the image sensor. Maybe they could have been combined sooner than they
were but each problem has been sufficiently difficult on its own
without complicating it with the other.
--

Regards,

Eric Stevens

In article , Eric Stevens
wrote:

Since digital provides an ongoing image of what's to be captured, I'd have
thought that SLR technology would be phased out, yet still see a lot of
Digital SLR . What am I missing ?

You are missing the focussing problem.

that too. slrs focus faster.

It is only now that accurate
and fast focussing does not necessarily require a device separate from
the image sensor. Maybe they could have been combined sooner than they
were but each problem has been sufficiently difficult on its own
without complicating it with the other.

it's still slower than an slr, although not an issue in most cases.

In article ,
RichA wrote:

Since digital provides an ongoing image of what's to be captured, I'd have
thought that SLR technology would be phased out, yet still see a lot of
Digital SLR . What am I missing ?

latency.

slrs have an optical viewfinder, which has zero latency. even the best
digital camera has latency. it's short enough for most things but not
all.

The latency for film is the mechanical shutter.

digital uses a mechanical shutter and film isn't the topic.

In article ,
says...

Since=20digital=20provides=20an=20ongoing=20image= 20of=20what's=20=
to=20be=20captured,=20I'd=20have=20thought=20that= 20SLR=20technolo=
gy=20would=20be=20phased=20out,=20yet=20still=20se e=20a=20lot=20of=
=20Digital=20SLR=20.=20What=20am=20I=20missing=20?

What kind of newsreader are you using?
--
Alfred Molon

Olympus E-series DSLRs and micro 4/3 forum at
https://tech.groups.yahoo.com/group/MyOlympus/
https://myolympus.org/ photo sharing site

In article , Alfred Molon
wrote:

In article ,
says...

Since=20digital=20provides=20an=20ongoing=20image= 20of=20what's=20=
to=20be=20captured,=20I'd=20have=20thought=20that= 20SLR=20technolo=
gy=20would=20be=20phased=20out,=20yet=20still=20se e=20a=20lot=20of=
=20Digital=20SLR=20.=20What=20am=20I=20missing=20?

What kind of newsreader are you using?

his isn't the problem. the one you're using is.

On=20Sun=20May=205=2016:45:02=202019=20nospam=20=2 0wrote:
,=20 casagiannoni@op=
tonline.net
=20wrote:

=20=20=20=20Since=20digital=20provides=20an=20 ongoing=20image=
=20of=20what's=20to=20be=20captured,=20I'd=20have
=20=20=20=20thought=20that=20SLR=20technology= 20would=20be=20p=
hased=20out,=20yet=20still=20see=20a=20lot=20of
=20=20=20=20Digital=20SLR=20.=20What=20am=20I= 20missing=20?
=20=20
=20=20=20latency.
=20=20
=20=20=20slrs=20have=20an=20optical=20viewfinde r,=20which=20has=
=20zero=20latency.=20even=20the=20best
=20=20=20digital=20camera=20has=20latency.=20it 's=20short=20eno=
ugh=20for=20most=20things=20but=20not
=20=20=20all.
=20
=20=20Not=20being=20an=20expert,=20I=20assume=20 latency=20is=20a=
=20slight=20delay.=20So=20then=20an=20SLR=20must
=20=20have=20it's=20own=20latency=20while=20the= 20mirror=20flips=
=20up=20?

=20the=20latency=20is=20in=20the=20viewfinder.

=20with=20optical=20viewfinders,=20there=20is=20n o=20latency=20(t=
hat=20can=20be=20measured).

=20with=20digital=20viewfinders,=20the=20image=20 has=20to=20be=20=
read=20out=20of=20the=20sensor,
=20processed,=20then=20sent=20to=20the=20lcd=20di splay.=20that=20=
is=20*not*=20zero.=20it's=20short
=20enough=20for=20most=20things,=20but=20not=20sh ort=20enough=20f=
or=20everything=20(and=20can=20be
=20annoying).

=20the=20mirror=20flip=20is=20also=20a=20latency, =20but=20with=20=
digital=20cameras,=20there=20is
=20also=20a=20latency=20before=20taking=20a=20pho to,=20where=20th=
e=20sensor=20has=20to=20be
=20flushed,=20the=20shutter=20closed,=20then=20op ened/closed=20fo=
r=20the=20photo=20and=20then
=20returned=20to=20viewfinder=20mode.

=20some=20digital=20cameras=20are=20always=20reco rding=20and=20cl=
aim=20zero=20latency=20by
=20using=20whatever=20image=20when=20you=20presse d=20the=20button=
=2E=20a=20few=20of=20them=20save
=20images=20*before*=20you=20pressed=20the=20butt on,=20so=20you=
=20won't=20ever=20miss=20the
=20magic=20moment.=20some=20create=20short=20vide os=20leading=20u=
p=20to=20the=20final=20image
=20(live=20photos).


Thanks=20for=20good=20info=20...