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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
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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
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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
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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 |
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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
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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
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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
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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
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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
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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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