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Nikon D750 - Experiments at ISO 12800



 
 
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  #1  
Old February 3rd 16, 02:02 AM posted to rec.photo.digital
Eric Stevens
external usenet poster
 
Posts: 13,611
Default Nikon D750 - Experiments at ISO 12800

I was actually playing around with Auto ISO which I haven't used much
in the past and found I had taken a number of shots at ISO 12800. The
following are unadjusted JPGs of the original raw files. There is no
rhyme or reason to the aperture and speed settings.

Here is the sun setting behind the hills encircling the town of
Whitianga, Mercury Bay where Captain Cook stopped to make a number of
observations of the planet Mercury. f/4 at 1/400 sec.
https://dl.dropboxusercontent.com/u/...R--7501956.jpg

This one is a friend watching the television broadcast of Serena
Williams being demolished by Angelique Kerber in the Australian open.
f/4 at 1/400 sec
https://dl.dropboxusercontent.com/u/...R--7501958.jpg

Finally we are in the bowels of a 19th century gold-ore stamper in the
town of Thames. f/8 at 1/10 sec.
https://dl.dropboxusercontent.com/u/...R--7501973.jpg
--

Regards,

Eric Stevens
  #2  
Old February 3rd 16, 03:00 AM posted to rec.photo.digital
Savageduck[_3_]
external usenet poster
 
Posts: 16,487
Default Nikon D750 - Experiments at ISO 12800

On 2016-02-03 01:02:26 +0000, Eric Stevens said:

I was actually playing around with Auto ISO which I haven't used much
in the past and found I had taken a number of shots at ISO 12800. The
following are unadjusted JPGs of the original raw files. There is no
rhyme or reason to the aperture and speed settings.


What were your actual Auto ISO settings?
Obviously your Maximum Sensitivety was ISO 12800, but what was your
Minimum Shutter speed, and what was your thinking behind that choice?
It looks like it might have been 1/10 sec.

Here is the sun setting behind the hills encircling the town of
Whitianga, Mercury Bay where Captain Cook stopped to make a number of
observations of the planet Mercury. f/4 at 1/400 sec.
https://dl.dropboxusercontent.com/u/...R--7501956.jpg


That seems reasonably to be a well balanced exposure.
How did you meter the manual exposure, and why did you select those
particular manual A & S settings?

Also, I would have thought that by shooting Auto ISO with Manual you
would have the camera working to balance the exposure by Auto adjusting
the ISO.


This one is a friend watching the television broadcast of Serena
Williams being demolished by Angelique Kerber in the Australian open.
f/4 at 1/400 sec
https://dl.dropboxusercontent.com/u/...R--7501958.jpg


Same question for this image as the last regarding choice of Manual A &
S exposure settings and metering?

Here one can see the Auto ISO making the sensitivety adjustment to deal
with the manual A & S settings. That said it did a good job and kept
the noise down. Nice.


Finally we are in the bowels of a 19th century gold-ore stamper in the
town of Thames. f/8 at 1/10 sec.
https://dl.dropboxusercontent.com/u/...R--7501973.jpg


Here you switched from Manual to Aperture Priority and your Auto ISO
Minimum Shutter Speed setting came into play, and while allowing you to
capture the scene, the shutter speed was too low and combined with the
Maximum Sensitivety, you now have areas where highlights are blown.




--
Regards,

Savageduck

  #3  
Old February 3rd 16, 03:29 AM posted to rec.photo.digital
PeterN[_6_]
external usenet poster
 
Posts: 4,254
Default Nikon D750 - Experiments at ISO 12800

On 2/2/2016 8:02 PM, Eric Stevens wrote:
I was actually playing around with Auto ISO which I haven't used much
in the past and found I had taken a number of shots at ISO 12800. The
following are unadjusted JPGs of the original raw files. There is no
rhyme or reason to the aperture and speed settings.

Here is the sun setting behind the hills encircling the town of
Whitianga, Mercury Bay where Captain Cook stopped to make a number of
observations of the planet Mercury. f/4 at 1/400 sec.
https://dl.dropboxusercontent.com/u/...R--7501956.jpg


For my taste the sky is too bright and the shadows to deep. You can fix
this during exposure either by using a graduated ND filter, or by
jiggling your hand over the top of the image for about 75% of the
exposure. (That will reduce your exposure of the sky by about 1.5 stops.)

This one is a friend watching the television broadcast of Serena
Williams being demolished by Angelique Kerber in the Australian open.
f/4 at 1/400 sec
https://dl.dropboxusercontent.com/u/...R--7501958.jpg


If your friend is the subject, I would have eliminated the bright light,
as my eye keeps being drawn to that, rather than your friend. Also, too
much of the image seems OOF.

Finally we are in the bowels of a 19th century gold-ore stamper in the
town of Thames. f/8 at 1/10 sec.
https://dl.dropboxusercontent.com/u/...R--7501973.jpg

Same comments as the Duck.

--
PeterN
  #4  
Old February 3rd 16, 03:43 AM posted to rec.photo.digital
Savageduck[_3_]
external usenet poster
 
Posts: 16,487
Default Nikon D750 - Experiments at ISO 12800

On 2016-02-03 02:29:38 +0000, PeterN said:

On 2/2/2016 8:02 PM, Eric Stevens wrote:
I was actually playing around with Auto ISO which I haven't used much
in the past and found I had taken a number of shots at ISO 12800. The
following are unadjusted JPGs of the original raw files. There is no
rhyme or reason to the aperture and speed settings.

Here is the sun setting behind the hills encircling the town of
Whitianga, Mercury Bay where Captain Cook stopped to make a number of
observations of the planet Mercury. f/4 at 1/400 sec.
https://dl.dropboxusercontent.com/u/...R--7501956.jpg


For my taste the sky is too bright and the shadows to deep. You can fix
this during exposure either by using a graduated ND filter, or by
jiggling your hand over the top of the image for about 75% of the
exposure. (That will reduce your exposure of the sky by about 1.5
stops.)


How are you timing this "hand jiggling" for 75% of 1/400 sec?

The ND Grad is a workable option, but the question remains where and
how was metering made (what area was the metering target)?
....and why the A & S manual settings selected, one would hope they were
not random guesses.


This one is a friend watching the television broadcast of Serena
Williams being demolished by Angelique Kerber in the Australian open.
f/4 at 1/400 sec
https://dl.dropboxusercontent.com/u/...R--7501958.jpg


If your friend is the subject, I would have eliminated the bright
light, as my eye keeps being drawn to that, rather than your friend.
Also, too much of the image seems OOF.


It is an Auto ISO experiment.

Finally we are in the bowels of a 19th century gold-ore stamper in the
town of Thames. f/8 at 1/10 sec.
https://dl.dropboxusercontent.com/u/...R--7501973.jpg

Same comments as the Duck.


Aah! Some concensus.


--
Regards,

Savageduck

  #5  
Old February 3rd 16, 04:05 AM posted to rec.photo.digital
PeterN[_6_]
external usenet poster
 
Posts: 4,254
Default Nikon D750 - Experiments at ISO 12800

On 2/2/2016 9:43 PM, Savageduck wrote:
On 2016-02-03 02:29:38 +0000, PeterN said:

On 2/2/2016 8:02 PM, Eric Stevens wrote:
I was actually playing around with Auto ISO which I haven't used much
in the past and found I had taken a number of shots at ISO 12800. The
following are unadjusted JPGs of the original raw files. There is no
rhyme or reason to the aperture and speed settings.

Here is the sun setting behind the hills encircling the town of
Whitianga, Mercury Bay where Captain Cook stopped to make a number of
observations of the planet Mercury. f/4 at 1/400 sec.
https://dl.dropboxusercontent.com/u/...R--7501956.jpg


For my taste the sky is too bright and the shadows to deep. You can
fix this during exposure either by using a graduated ND filter, or by
jiggling your hand over the top of the image for about 75% of the
exposure. (That will reduce your exposure of the sky by about 1.5 stops.)


How are you timing this "hand jiggling" for 75% of 1/400 sec?


I am used to working with Long exposure.


The ND Grad is a workable option, but the question remains where and how
was metering made (what area was the metering target)?
...and why the A & S manual settings selected, one would hope they were
not random guesses.


Yep!


This one is a friend watching the television broadcast of Serena
Williams being demolished by Angelique Kerber in the Australian open.
f/4 at 1/400 sec
https://dl.dropboxusercontent.com/u/...R--7501958.jpg


If your friend is the subject, I would have eliminated the bright
light, as my eye keeps being drawn to that, rather than your friend.
Also, too much of the image seems OOF.


It is an Auto ISO experiment.


Unless he was using some form of center weighted or spot metering, I
would think that the light will throw matrix metering out of whack.


Finally we are in the bowels of a 19th century gold-ore stamper in the
town of Thames. f/8 at 1/10 sec.
https://dl.dropboxusercontent.com/u/...R--7501973.jpg

Same comments as the Duck.


Aah! Some concensus.


Anything to make you happy.

--
PeterN
  #6  
Old February 3rd 16, 04:22 AM posted to rec.photo.digital
Savageduck[_3_]
external usenet poster
 
Posts: 16,487
Default Nikon D750 - Experiments at ISO 12800

On 2016-02-03 03:05:02 +0000, PeterN said:

On 2/2/2016 9:43 PM, Savageduck wrote:
On 2016-02-03 02:29:38 +0000, PeterN said:

On 2/2/2016 8:02 PM, Eric Stevens wrote:
I was actually playing around with Auto ISO which I haven't used much
in the past and found I had taken a number of shots at ISO 12800. The
following are unadjusted JPGs of the original raw files. There is no
rhyme or reason to the aperture and speed settings.

Here is the sun setting behind the hills encircling the town of
Whitianga, Mercury Bay where Captain Cook stopped to make a number of
observations of the planet Mercury. f/4 at 1/400 sec.
https://dl.dropboxusercontent.com/u/...R--7501956.jpg


For my taste the sky is too bright and the shadows to deep. You can
fix this during exposure either by using a graduated ND filter, or by
jiggling your hand over the top of the image for about 75% of the
exposure. (That will reduce your exposure of the sky by about 1.5 stops.)


How are you timing this "hand jiggling" for 75% of 1/400 sec?


I am used to working with Long exposure.


How do you get to "long exposure" from a shutter speed of 1/400 sec?

Let's see 75% of 1/400 should be 1/300. Do you use an analog, or
electronically timed 1/300 sec "hand jiggle"?

The ND Grad is a workable option, but the question remains where and how
was metering made (what area was the metering target)?
...and why the A & S manual settings selected, one would hope they were
not random guesses.


Yep!


This one is a friend watching the television broadcast of Serena
Williams being demolished by Angelique Kerber in the Australian open.
f/4 at 1/400 sec
https://dl.dropboxusercontent.com/u/...R--7501958.jpg


If your friend is the subject, I would have eliminated the bright
light, as my eye keeps being drawn to that, rather than your friend.
Also, too much of the image seems OOF.


It is an Auto ISO experiment.


Unless he was using some form of center weighted or spot metering, I
would think that the light will throw matrix metering out of whack.


....but we don't know yet do we?


Finally we are in the bowels of a 19th century gold-ore stamper in the
town of Thames. f/8 at 1/10 sec.
https://dl.dropboxusercontent.com/u/...R--7501973.jpg

Same comments as the Duck.


Aah! Some concensus.


Anything to make you happy.


Almost there ;-)


--
Regards,

Savageduck

  #7  
Old February 3rd 16, 03:31 PM posted to rec.photo.digital
PeterN[_6_]
external usenet poster
 
Posts: 4,254
Default Nikon D750 - Experiments at ISO 12800

On 2/2/2016 10:22 PM, Savageduck wrote:
On 2016-02-03 03:05:02 +0000, PeterN said:

On 2/2/2016 9:43 PM, Savageduck wrote:
On 2016-02-03 02:29:38 +0000, PeterN said:

On 2/2/2016 8:02 PM, Eric Stevens wrote:
I was actually playing around with Auto ISO which I haven't used much
in the past and found I had taken a number of shots at ISO 12800. The
following are unadjusted JPGs of the original raw files. There is no
rhyme or reason to the aperture and speed settings.

Here is the sun setting behind the hills encircling the town of
Whitianga, Mercury Bay where Captain Cook stopped to make a number of
observations of the planet Mercury. f/4 at 1/400 sec.
https://dl.dropboxusercontent.com/u/...R--7501956.jpg


For my taste the sky is too bright and the shadows to deep. You can
fix this during exposure either by using a graduated ND filter, or by
jiggling your hand over the top of the image for about 75% of the
exposure. (That will reduce your exposure of the sky by about 1.5
stops.)

How are you timing this "hand jiggling" for 75% of 1/400 sec?


I am used to working with Long exposure.


How do you get to "long exposure" from a shutter speed of 1/400 sec?


I almost never look at exif files. I am too conditioned just to look at
an image.
My bad.



Let's see 75% of 1/400 should be 1/300. Do you use an analog, or
electronically timed 1/300 sec "hand jiggle"?

The ND Grad is a workable option, but the question remains where and how
was metering made (what area was the metering target)?
...and why the A & S manual settings selected, one would hope they were
not random guesses.


Yep!


This one is a friend watching the television broadcast of Serena
Williams being demolished by Angelique Kerber in the Australian open.
f/4 at 1/400 sec
https://dl.dropboxusercontent.com/u/...R--7501958.jpg


If your friend is the subject, I would have eliminated the bright
light, as my eye keeps being drawn to that, rather than your friend.
Also, too much of the image seems OOF.

It is an Auto ISO experiment.


Unless he was using some form of center weighted or spot metering, I
would think that the light will throw matrix metering out of whack.


...but we don't know yet do we?


Finally we are in the bowels of a 19th century gold-ore stamper in the
town of Thames. f/8 at 1/10 sec.
https://dl.dropboxusercontent.com/u/...R--7501973.jpg

Same comments as the Duck.

Aah! Some concensus.


Anything to make you happy.


Almost there ;-)




--
PeterN
  #8  
Old February 3rd 16, 04:00 PM posted to rec.photo.digital
Savageduck[_3_]
external usenet poster
 
Posts: 16,487
Default Nikon D750 - Experiments at ISO 12800

On 2016-02-03 14:31:48 +0000, PeterN said:

On 2/2/2016 10:22 PM, Savageduck wrote:
On 2016-02-03 03:05:02 +0000, PeterN said:

On 2/2/2016 9:43 PM, Savageduck wrote:
On 2016-02-03 02:29:38 +0000, PeterN said:

On 2/2/2016 8:02 PM, Eric Stevens wrote:
I was actually playing around with Auto ISO which I haven't used much
in the past and found I had taken a number of shots at ISO 12800. The
following are unadjusted JPGs of the original raw files. There is no
rhyme or reason to the aperture and speed settings.

Here is the sun setting behind the hills encircling the town of
Whitianga, Mercury Bay where Captain Cook stopped to make a number of
observations of the planet Mercury. f/4 at 1/400 sec.
https://dl.dropboxusercontent.com/u/...R--7501956.jpg


For my taste the sky is too bright and the shadows to deep. You can
fix this during exposure either by using a graduated ND filter, or by
jiggling your hand over the top of the image for about 75% of the
exposure. (That will reduce your exposure of the sky by about 1.5
stops.)

How are you timing this "hand jiggling" for 75% of 1/400 sec?

I am used to working with Long exposure.


How do you get to "long exposure" from a shutter speed of 1/400 sec?


I almost never look at exif files. I am too conditioned just to look at
an image.
My bad.


You didn't have to look at the EXIF data (though I did), Eric told us
the shutter speed in his OP.


Let's see 75% of 1/400 should be 1/300. Do you use an analog, or
electronically timed 1/300 sec "hand jiggle"?

The ND Grad is a workable option, but the question remains where and how
was metering made (what area was the metering target)?
...and why the A & S manual settings selected, one would hope they were
not random guesses.


Yep!


This one is a friend watching the television broadcast of Serena
Williams being demolished by Angelique Kerber in the Australian open.
f/4 at 1/400 sec
https://dl.dropboxusercontent.com/u/...R--7501958.jpg


If your friend is the subject, I would have eliminated the bright
light, as my eye keeps being drawn to that, rather than your friend.
Also, too much of the image seems OOF.

It is an Auto ISO experiment.

Unless he was using some form of center weighted or spot metering, I
would think that the light will throw matrix metering out of whack.


...but we don't know yet do we?


Finally we are in the bowels of a 19th century gold-ore stamper in the
town of Thames. f/8 at 1/10 sec.
https://dl.dropboxusercontent.com/u/...R--7501973.jpg

Same comments as the Duck.

Aah! Some concensus.


Anything to make you happy.


Almost there ;-)



--
Regards,

Savageduck

  #9  
Old February 3rd 16, 11:17 PM posted to rec.photo.digital
Eric Stevens
external usenet poster
 
Posts: 13,611
Default Nikon D750 - Experiments at ISO 12800

On Tue, 2 Feb 2016 21:29:38 -0500, PeterN
wrote:

On 2/2/2016 8:02 PM, Eric Stevens wrote:
I was actually playing around with Auto ISO which I haven't used much
in the past and found I had taken a number of shots at ISO 12800. The
following are unadjusted JPGs of the original raw files. There is no
rhyme or reason to the aperture and speed settings.

Here is the sun setting behind the hills encircling the town of
Whitianga, Mercury Bay where Captain Cook stopped to make a number of
observations of the planet Mercury. f/4 at 1/400 sec.
https://dl.dropboxusercontent.com/u/...R--7501956.jpg


For my taste the sky is too bright and the shadows to deep. You can fix
this during exposure either by using a graduated ND filter, or by
jiggling your hand over the top of the image for about 75% of the
exposure. (That will reduce your exposure of the sky by about 1.5 stops.)


This was not an attempt at producing an acceptable picture. It was
test to see what the camera did under the circumstances. That's the
problem with 'auto': you don't quite know what the camera is going to
do.

This one is a friend watching the television broadcast of Serena
Williams being demolished by Angelique Kerber in the Australian open.
f/4 at 1/400 sec
https://dl.dropboxusercontent.com/u/...R--7501958.jpg


If your friend is the subject, I would have eliminated the bright light,
as my eye keeps being drawn to that, rather than your friend. Also, too
much of the image seems OOF.


It is. But what can you expect at f/4 at that range?

Finally we are in the bowels of a 19th century gold-ore stamper in the
town of Thames. f/8 at 1/10 sec.
https://dl.dropboxusercontent.com/u/...R--7501973.jpg

Same comments as the Duck.

--

Regards,

Eric Stevens
  #10  
Old February 3rd 16, 11:30 PM posted to rec.photo.digital
Eric Stevens
external usenet poster
 
Posts: 13,611
Default Nikon D750 - Experiments at ISO 12800

On Tue, 2 Feb 2016 18:00:31 -0800, Savageduck
wrote:

On 2016-02-03 01:02:26 +0000, Eric Stevens said:

I was actually playing around with Auto ISO which I haven't used much
in the past and found I had taken a number of shots at ISO 12800. The
following are unadjusted JPGs of the original raw files. There is no
rhyme or reason to the aperture and speed settings.


What were your actual Auto ISO settings?
Obviously your Maximum Sensitivety was ISO 12800, but what was your
Minimum Shutter speed, and what was your thinking behind that choice?
It looks like it might have been 1/10 sec.


Actually it was 'Auto'.

Here is the sun setting behind the hills encircling the town of
Whitianga, Mercury Bay where Captain Cook stopped to make a number of
observations of the planet Mercury. f/4 at 1/400 sec.
https://dl.dropboxusercontent.com/u/...R--7501956.jpg


That seems reasonably to be a well balanced exposure.
How did you meter the manual exposure, and why did you select those
particular manual A & S settings?


Right now, I haven't the least idea.

Also, I would have thought that by shooting Auto ISO with Manual you
would have the camera working to balance the exposure by Auto adjusting
the ISO.


So would I.


This one is a friend watching the television broadcast of Serena
Williams being demolished by Angelique Kerber in the Australian open.
f/4 at 1/400 sec
https://dl.dropboxusercontent.com/u/...R--7501958.jpg


Same question for this image as the last regarding choice of Manual A &
S exposure settings and metering?

It was an opportunity shot: I hadn't intended to take one but for a
few seconds he dropped his hand down from his face. I just used the
settings which were already in the camera.

Here one can see the Auto ISO making the sensitivety adjustment to deal
with the manual A & S settings. That said it did a good job and kept
the noise down. Nice.


Finally we are in the bowels of a 19th century gold-ore stamper in the
town of Thames. f/8 at 1/10 sec.
https://dl.dropboxusercontent.com/u/...R--7501973.jpg


Here you switched from Manual to Aperture Priority and your Auto ISO
Minimum Shutter Speed setting came into play, and while allowing you to
capture the scene, the shutter speed was too low and combined with the
Maximum Sensitivety, you now have areas where highlights are blown.


Blown highlights were inevitable. I was in a dark corner, looking out
through a forest of timbers to the light outside.
--

Regards,

Eric Stevens
 




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