Archived from groups: rec.photo.digital (More info?)

The contrast range which a sensor will record data in both highlights
and deep shadow is quite narrow compared to what negative film will
record and that in turn is very narrow compared to what the eye can see.

A lot of otherwise nice photos are often lost to either blown highlights
or blocked shadows. Nothing is much worse than the beach in strong,
midday sun. The Panasonic FZ20 surprised this DSLR owner with it's
ability to record detail in dark areas and highlights at the same time.
http://www.ryadia.com/sailor_lost.htm
--
Douglas,
Zero care factor for negative responses
from anonymous posters.

Archived from groups: rec.photo.digital (More info?)

Foto Ryadia's Studio wrote:
>
> The contrast range which a sensor will record data in both highlights
> and deep shadow is quite narrow compared to what negative film will
> record and that in turn is very narrow compared to what the eye can see.
>
> A lot of otherwise nice photos are often lost to either blown highlights
> or blocked shadows. Nothing is much worse than the beach in strong,
> midday sun. The Panasonic FZ20 surprised this DSLR owner with it's
> ability to record detail in dark areas and highlights at the same time.
> http://www.ryadia.com/sailor_lost.htm
> --
> Douglas,
> Zero care factor for negative responses
> from anonymous posters.

impressive
--
Paul (And I'm, like, "yeah, whatever!" )
-------------------------------------------------------
Stop and Look
http://www.geocities.com/dreamst8me/

Archived from groups: rec.photo.digital (More info?)

Foto Ryadia's Studio wrote:
> The contrast range which a sensor will record data in both highlights
> and deep shadow is quite narrow compared to what negative film will
> record and that in turn is very narrow compared to what the eye can see.
>
> A lot of otherwise nice photos are often lost to either blown highlights
> or blocked shadows. Nothing is much worse than the beach in strong,
> midday sun. The Panasonic FZ20 surprised this DSLR owner with it's
> ability to record detail in dark areas and highlights at the same time.
> http://www.ryadia.com/sailor_lost.htm


Nice image, but where's the beef^H^H^H^Hbeach? That image (cropped?)
seems an even blend of dark/light areas. An event at the beach, but not
one grain of bright sand do I see.

--
jer
email reply - I am not a 'ten'

Archived from groups: rec.photo.digital (More info?)

There may be a new generation of compact digitals that have fast processors
that can manage the levels and the curves and can improve the detail in
shadow and highlights. This is equivalent as if we have record the photo in
raw and post processed in PS in 12 bit, only it is automatic, better for
amateur use. New Nikons S2 and others have a feature called D-Lighting that
can equalize the curve like this, but I don't believe that process the photo
before compression. I think that may be other new cameras as a very thin
Sony I have recently seen that may use a more or less similar process.

The benefit of using this process IN the camera and BEFORE jpg compression
is that the photo is in 12 bit, so the dark and highlight details have 4
more bits to develop detail (4096 levels instead of 256 in full spectrum),
so if this equalization takes place before convert to 8 bit, the final
result will be much-much better.
--
Dimitris M

>
> The contrast range which a sensor will record data in both highlights
> and deep shadow is quite narrow compared to what negative film will
> record and that in turn is very narrow compared to what the eye can see.
>
> A lot of otherwise nice photos are often lost to either blown highlights
> or blocked shadows. Nothing is much worse than the beach in strong,
> midday sun. The Panasonic FZ20 surprised this DSLR owner with it's
> ability to record detail in dark areas and highlights at the same time.
> http://www.ryadia.com/sailor_lost.htm
>

Archived from groups: rec.photo.digital (More info?)

Jer wrote:
> Foto Ryadia's Studio wrote:
>
>> The contrast range which a sensor will record data in both highlights
>> and deep shadow is quite narrow compared to what negative film will
>> record and that in turn is very narrow compared to what the eye can see.
>>
>> A lot of otherwise nice photos are often lost to either blown
>> highlights or blocked shadows. Nothing is much worse than the beach in
>> strong, midday sun. The Panasonic FZ20 surprised this DSLR owner with
>> it's ability to record detail in dark areas and highlights at the same
>> time.
>> http://www.ryadia.com/sailor_lost.htm
>
>
>
> Nice image, but where's the beef^H^H^H^Hbeach? That image (cropped?)
> seems an even blend of dark/light areas. An event at the beach, but not
> one grain of bright sand do I see.
>

Not cropped... Full frame of the shot.

--
Douglas,
Zero care factor for negative responses
from anonymous posters.

Archived from groups: rec.photo.digital (More info?)

Dimitris M wrote:
> There may be a new generation of compact digitals that have fast processors
> that can manage the levels and the curves and can improve the detail in
> shadow and highlights. This is equivalent as if we have record the photo in
> raw and post processed in PS in 12 bit, only it is automatic, better for
> amateur use. New Nikons S2 and others have a feature called D-Lighting that
> can equalize the curve like this, but I don't believe that process the photo
> before compression. I think that may be other new cameras as a very thin
> Sony I have recently seen that may use a more or less similar process.
>
> The benefit of using this process IN the camera and BEFORE jpg compression
> is that the photo is in 12 bit, so the dark and highlight details have 4
> more bits to develop detail (4096 levels instead of 256 in full spectrum),
> so if this equalization takes place before convert to 8 bit, the final
> result will be much-much better.

That shot was captured in TIFF mode. Using JPG mode on the same scene
produces blown highlights.

--
Douglas,
Zero care factor for negative responses
from anonymous posters.

Archived from groups: rec.photo.digital (More info?)

Foto Ryadia's Studio wrote:
>

> That shot was captured in TIFF mode. Using JPG mode on the same scene
> produces blown highlights.
>
> --
now that's interesting. why would that be? could this be true of other
cams?

--
Paul (And I'm, like, "yeah, whatever!" )
-------------------------------------------------------
Stop and Look
http://www.geocities.com/dreamst8me/

Archived from groups: rec.photo.digital (More info?)

"Foto Ryadia's Studio" <nospam@ryadia.com> skrev i meddelandet
news:42dcded4$1@dnews.tpgi.com.au...
> The contrast range which a sensor will record data in both highlights and
> deep shadow is quite narrow compared to what negative film will record and
> that in turn is very narrow compared to what the eye can see.
>
> A lot of otherwise nice photos are often lost to either blown highlights
> or blocked shadows. Nothing is much worse than the beach in strong, midday
> sun. The Panasonic FZ20 surprised this DSLR owner with it's ability to
> record detail in dark areas and highlights at the same time.
> http://www.ryadia.com/sailor_lost.htm
> --
> Douglas,

And all the people in the scene has a very purple-reddish skin tone.
Can anyone show a set of portraits with decent skin tones from a Panny,
please?
/per

Archived from groups: rec.photo.digital (More info?)

In message <42dcded4$1@dnews.tpgi.com.au>,
Foto Ryadia's Studio <nospam@ryadia.com> wrote:

>The contrast range which a sensor will record data in both highlights
>and deep shadow is quite narrow compared to what negative film will
>record and that in turn is very narrow compared to what the eye can see.

Not really; 12-bit digitization is the real limit, at least with current
DSLRs, at their lowest ISOs. If this were not true, there wouldn't be
much point in shooting at the higher ISOs.

Whatever image quality you get out of your 20D at ISO 1600, that's what
the 12 least significant bits would be, from the same sensor, if the
camera cleanly digitized at 16 bits at ISO 100.

>A lot of otherwise nice photos are often lost to either blown highlights
>or blocked shadows. Nothing is much worse than the beach in strong,
>midday sun. The Panasonic FZ20 surprised this DSLR owner with it's
>ability to record detail in dark areas and highlights at the same time.
>http://www.ryadia.com/sailor_lost.htm

What the hell are you talking about? Even in this downsized image,
there is absolutely *Z E R O* detail in those shadows; just 8*8 blocks
of dark, solid color. The highlights are clipped, and blocky as well.

Again, you have proven absolutely nothing.
--

<>>< ><<> ><<> <>>< ><<> <>>< <>>< ><<>
John P Sheehy <JPS@no.komm>
><<> <>>< <>>< ><<> <>>< ><<> ><<> <>><

Archived from groups: rec.photo.digital (More info?)

In message <42DCE65B.FDDD2574@blueyonder.co.uk>,
Paul Heslop <paul.heslop@blueyonder.co.uk> wrote:

>impressive

How so?
--

<>>< ><<> ><<> <>>< ><<> <>>< <>>< ><<>
John P Sheehy <JPS@no.komm>
><<> <>>< <>>< ><<> <>>< ><<> ><<> <>><

Archived from groups: rec.photo.digital (More info?)

JPS@no.komm wrote:
>
> In message <42DCE65B.FDDD2574@blueyonder.co.uk>,
> Paul Heslop <paul.heslop@blueyonder.co.uk> wrote:
>
> >impressive
>
> How so?
> --
>
> <>>< ><<> ><<> <>>< ><<> <>>< <>>< ><<>
> John P Sheehy <JPS@no.komm>
> ><<> <>>< <>>< ><<> <>>< ><<> ><<> <>><

okay, I should have said

"In comparison to my Oly c-725"

I can see details in all the right places.
--
Paul (And I'm, like, "yeah, whatever!" )
-------------------------------------------------------
Stop and Look
http://www.geocities.com/dreamst8me/

Archived from groups: rec.photo.digital (More info?)

"Foto Ryadia's Studio" <nospam@ryadia.com> wrote:
>
> That shot was captured in TIFF mode. Using JPG mode on the same scene
> produces blown highlights.

If you look at the histogram, you'll see that the highlights are blown on
that image.

David J. Littleboy
Tokyo, Japan

Archived from groups: rec.photo.digital (More info?)

In message <dbjvgn$p1r$1@nnrp.gol.com>,
"David J. Littleboy" <davidjl@gol.com> wrote:

>"Foto Ryadia's Studio" <nospam@ryadia.com> wrote:

>> That shot was captured in TIFF mode. Using JPG mode on the same scene
>> produces blown highlights.

>If you look at the histogram, you'll see that the highlights are blown on
>that image.

The shadows are completely featureless, too. If you paste the image
into an editor, and change the gamma, you can see solid 8*8 tiles of
dark color (total JPEG compression) in the shadows, and if you move the
gamma slider the other way, you see the same featureless squares at the
edges of the blown-out area.

Doug is out on a limb once again.
--

<>>< ><<> ><<> <>>< ><<> <>>< <>>< ><<>
John P Sheehy <JPS@no.komm>
><<> <>>< <>>< ><<> <>>< ><<> ><<> <>><

Archived from groups: rec.photo.digital (More info?)

JPS@no.komm wrote:

> What the hell are you talking about? Even in this downsized image,
> there is absolutely *Z E R O* detail in those shadows; just 8*8 blocks
> of dark, solid color. The highlights are clipped, and blocky as well.
>
> Again, you have proven absolutely nothing.

And you are stupid enough to argue about nothing?

--
Douglas,
Zero care factor for negative responses
from anonymous posters.