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Auto ISO
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Jun 6, 2023 09:19:37   #
Picture Taker Loc: Michigan Thumb
 
"Larryepage" Yes, changing the ISO DOES make a change, just as it does when you change the other 2 parts of the triangle.

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Jun 6, 2023 09:56:24   #
rehess Loc: South Bend, Indiana, USA
 
larryepage wrote:
You have control of those two things, but you lose control of dynamic range. With many cameras, color rendition changes significantly as ISO changes. I had at least one camera where resolution appeared to change in the extreme case, as if sensels were "tied together" in some fashion to achieve the higher sensitivity. I didn't care at the time, because I didn't like the results and avoided the high settings, so don't know if the resolution actually changed or just looked like it did.

My point here is that changing the ISO DOES change the essential charachter of the image. It can be by a little or a lot, but in no way does higher sensitivity come for free. Perhaps your standards and expectations have room for those changes, perhaps not. Just don't say there is no change. It can be readily seen even with a camera like the D850.
You have control of those two things, but you lose... (show quote)

My Pentax KP, which is allegedly similar to the Nikon D500, shows little change in DR, certainly acceptable. I wouldn’t say “even the D850” - regardless of what Nikon users believe, it isn’t God’s gift to mankind’. [unwatch]

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Jun 6, 2023 11:05:59   #
wapiti Loc: round rock, texas
 
Auto ISO is a wonderful tool for Wildlife Photography in low light. Otherwise.........



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Jun 6, 2023 11:25:27   #
SuperflyTNT Loc: Manassas VA
 
rehess wrote:
In ‘auto shutter speed’ or ‘auto aperture’ the essence of the photo changes - ‘motion stopping’ or DoF - but in ‘auto ISO’ + ‘M mode’ you still have control of those things.


I always have control of this things no matter what mode I’m in.

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Jun 6, 2023 11:28:39   #
Rab-Eye Loc: Indiana
 
DaveJ wrote:
I use manual with auto ISO almost 100% of the time. With modern cameras, ISO is my least important setting. I use EC to adjust for backlit or other tricky light. For me, the wrong shutter or aperture can ruin a photo. I can work with some fairly high ISO if shutter and aperture is where I want or need it. YMMV.


I frequently do the same thing.

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Jun 6, 2023 11:33:50   #
JohnSwanda Loc: San Francisco
 
wapiti wrote:
Auto ISO is a wonderful tool for Wildlife Photography in low light. Otherwise.........


How about any moving subject in low light?

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Jun 6, 2023 13:46:41   #
User ID
 
fetzler wrote:
If you are only using ISO 100 you are missing many photographic opportunities.

Perfectionism is the enemy.

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Jun 6, 2023 13:50:56   #
User ID
 
Rab-Eye wrote:
I frequently do the same thing.

I frequently do some things.

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Jun 6, 2023 13:51:49   #
User ID
 
JohnSwanda wrote:
How about any moving subject in low light?

Howbout those Mets ?

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Jun 6, 2023 13:54:55   #
User ID
 
2/3 of of the way there ...
Page visible on the horizon.

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Jun 6, 2023 15:09:51   #
Henlopen Loc: Lewes, Delaware
 
Grahame wrote:
What is your relevance of that comment with respect to 'Auto ISO'?


Right on Grahame, we had an occasion to snap a photo out of a car window last week at night at a beach cottage we were staying at that once belonged to my wife's family, and with the camera set on Auto ISO which selected 12,800 for the image, she handheld fired off a shot out the car window at 1/4 second f/3.5 using a Nikon 18-200 lens on a D7500 with the engine running, and after some Denoise, gigapixel and Topaz sharpening applied, this is what we got. Another sentimental memory caught frozen in time.


(Download)

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Jun 6, 2023 15:30:45   #
JimGray Loc: Albuquerque, New Mexico
 
Sidwalkastronomy wrote:
I was looking for general information and if I was missing something. I don't need a snarky post like yours.
What was point of your rude post



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Jun 6, 2023 15:30:55   #
Grahame Loc: Fiji
 
larryepage wrote:
You have control of those two things, but you lose control of dynamic range. With many cameras, color rendition changes significantly as ISO changes. I had at least one camera where resolution appeared to change in the extreme case, as if sensels were "tied together" in some fashion to achieve the higher sensitivity. I didn't care at the time, because I didn't like the results and avoided the high settings, so don't know if the resolution actually changed or just looked like it did.

My point here is that changing the ISO DOES change the essential charachter of the image. It can be by a little or a lot, but in no way does higher sensitivity come for free. Perhaps your standards and expectations have room for those changes, perhaps not. Just don't say there is no change. It can be readily seen even with a camera like the D850.
You have control of those two things, but u you l... (show quote)

Whilst it's obvious that dynamic range is affected by ISO, to suggest that "you lose control of dynamic range" in the context that it is written w.r.t M+Auto ISO is misleading.

If you are in M+Auto ISO you have full control of ISO. You have the ability to adjust the other two parameters' to modify the computed ISO if you wish where possible, and you can have the resultant values shown within your viewing.

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Jun 6, 2023 15:51:34   #
larryepage Loc: North Texas area
 
Grahame wrote:
Whilst it's obvious that dynamic range is affected by ISO, to suggest that "you lose control of dynamic range" in the context that it is written w.r.t M+Auto ISO is misleading.

If you are in M+Auto ISO you have full control of ISO. You have the ability to adjust the other two parameters' to modify the computed ISO if you wish where possible, and you can have the resultant values shown within your viewing.


That is certainly true. But when I read what folks write about how they use this approach, it doesn't appear that there's a whole lot of that going on. Or intended.

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Jun 6, 2023 16:12:17   #
Grahame Loc: Fiji
 
larryepage wrote:
That is certainly true. But when I read what folks write about how they use this approach, it doesn't appear that there's a whole lot of that going on. Or intended.

Yes, there does seem to be a myth believed by some that high ISOs are associated with 'Auto ISO'.

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