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Auto ISO
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Aug 24, 2021 08:32:06   #
tcthome Loc: NJ
 
Nalu wrote:
I don’t use it much, but here is my take. If your subject has relative uniform light with a low dynamic range, the camera will probably do a pretty good job at getting a reasonable exposure. If on the other hand there are highlights in your image, like a white bird with a dark background, the camera might get faked out and not compensate and the bird (in this case) can be over exposed. Perhaps in this case, spot metering might help. But the fact is, you don’t have as much control. In an exposure situation like this, the histogram won’t even indicate the brightness of your subject and fake you out. So, for me, I like (and need) the control so I tend to stay away from the auto features of my camera, like auto iso.
I don’t use it much, but here is my take. If your... (show quote)


I use spot metering for BIF, Wildlife & usually Auto ISO. But when shooting up torward a bright sky ( eg. Ospreys ) it will under expose the underside of the bird. I can pull up the shadows in post but sometimes rather go manual ISO & split the difference in under exposing the bottom of the Osprey & blowing out the sky . Only pull the shadows a little producing a cleaner photo.

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Aug 24, 2021 08:37:11   #
tcthome Loc: NJ
 
I use it for Wildlife photography or would use it in general for changing light conditions like outside with moving clouds. I shoot with a D810 with a high limit set at 3200 & feel it works great most of the time. Other than that, I feel Manual ISO is better.

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Aug 24, 2021 08:57:57   #
wingclui44 Loc: CT USA
 
Lee Thomas wrote:
In setting up my Nikon D7500, I came across Auto ISO and would like to hear from anyone who has used this setting. For a test, I set the maximum ISO at 6400 and by default , as I understand it, the minimum was set at 100. I shot in Aperture mode at f/5.6 in RAW. The lens was a Nikon 50mm f/1.8. I shot in a variety of lighting conditions, interior and exterior, with some being quick "grab shots". Overall, I was pleased with the results even though I shoot using less automated control. I'll be happy to share the link with anyone who would like to see the results that show the ISO and shutter speed changes depending on lighting conditions.
Lee
In setting up my Nikon D7500, I came across Auto I... (show quote)


Since getting My Df, I have been using Auto ISO with manual mode with the full range of ISO on my Df. It give me to control the shutter speed and the aperture freely.

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Aug 24, 2021 09:09:21   #
Sidwalkastronomy Loc: New Jersey Shore
 
BebuLamar wrote:
You didn't say which mode you used. P, S, A or M?


He said aperture mode in OP

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Aug 24, 2021 09:11:33   #
BebuLamar
 
Sidwalkastronomy wrote:
He said aperture mode in OP


Thanks I didn't see that.

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Aug 24, 2021 09:12:09   #
Mac Loc: Pittsburgh, Philadelphia now Hernando Co. Fl.
 
SuperflyTNT wrote:
I don’t believe he’s talking about manual focus, just manually setting the exposure.


Yes, my mistake.

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Aug 24, 2021 09:30:05   #
wapiti Loc: round rock, texas
 
Lee Thomas wrote:
In setting up my Nikon D7500, I came across Auto ISO and would like to hear from anyone who has used this setting. For a test, I set the maximum ISO at 6400 and by default , as I understand it, the minimum was set at 100. I shot in Aperture mode at f/5.6 in RAW. The lens was a Nikon 50mm f/1.8. I shot in a variety of lighting conditions, interior and exterior, with some being quick "grab shots". Overall, I was pleased with the results even though I shoot using less automated control. I'll be happy to share the link with anyone who would like to see the results that show the ISO and shutter speed changes depending on lighting conditions.
Lee
In setting up my Nikon D7500, I came across Auto I... (show quote)

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Aug 24, 2021 09:32:59   #
wapiti Loc: round rock, texas
 
In my D3 and D4, I have to be in Manual mode to use Auto ISO. If used properly, you cannot use Auto ISO in Aperture Mode. At least, not in my Nikon bodies.

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Aug 24, 2021 09:35:23   #
wapiti Loc: round rock, texas
 
Strodav wrote:
Many of us who are into wildlife / birding use manual mode, auto ISO. If you want some good tutorials on the subject look into Steve Perry's videos and books, which you can find on youtube and at backcountrygallery.com . There is a lot more to Auto ISO than setting an upper bound and enabling it. Your camera achieves it's highest dynamic range at base ISO and as ISO goes up dynamic range goes down and noise goes up, so you want to use the lowest ISO possible. I set my top end at 800, but if I can't get the shot there, I'll move it up knowing I should be able to make some improvement in Post, especially if I can average several shots together. At the end of the day, it's what's acceptable to you.
Many of us who are into wildlife / birding use man... (show quote)



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Aug 24, 2021 09:49:26   #
waynetgreen Loc: Florida
 
Nice shot!

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Aug 24, 2021 10:00:22   #
User ID
 
waynetgreen wrote:
Nice shot!

Thank you.

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Aug 24, 2021 10:19:36   #
gessman Loc: Colorado
 
I recently read where a pro said he uses "M" mode and auto ISO and dials in a 1.3 EC and holds those settings for almost every shot. His rational is that, since digital works best when exposed to the right (ETTR), white resides at that 1.3 EC setting so you don't get grey whites, you don't blow out reasonable highlights, and you don't have to keep fiddling with the controls except to change the intended effect such as a requirement for a faster shutter speed or a more open or closed aperture. I've used his technique some, especially when there's an overabundance of white in a shot like when the ground is covered with snow. It often becomes a bit fiddly with the shadows in a shot. Has anyone tried that technique. What would be reasonable arguments against it?

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Aug 24, 2021 10:21:13   #
jackm1943 Loc: Omaha, Nebraska
 
Lee Thomas wrote:
In setting up my Nikon D7500, I came across Auto ISO and would like to hear from anyone who has used this setting. For a test, I set the maximum ISO at 6400 and by default , as I understand it, the minimum was set at 100. I shot in Aperture mode at f/5.6 in RAW. The lens was a Nikon 50mm f/1.8. I shot in a variety of lighting conditions, interior and exterior, with some being quick "grab shots". Overall, I was pleased with the results even though I shoot using less automated control. I'll be happy to share the link with anyone who would like to see the results that show the ISO and shutter speed changes depending on lighting conditions.
Lee
In setting up my Nikon D7500, I came across Auto I... (show quote)


I have used this method for years when taking action shots such as motorcycle trials where riders are going in and out of shade constantly. I usually set the camera to 1/1000, f3.5-8 as needed, and auto ISO. Results in a useable image virtually 100% of the time. I have a full frame camera that handles high ISO just fine.

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Aug 24, 2021 10:31:32   #
CHG_CANON Loc: the Windy City
 
gessman wrote:
I recently read where a pro said he uses "M" mode and auto ISO and dials in a 1.3 EC and holds those settings for almost every shot. His rational is that, since digital works best when exposed to the right (ETTR), white resides at that 1.3 EC setting so you don't get grey whites, you don't blow out reasonable highlights, and you don't have to keep fiddling with the controls except to change the intended effect such as a requirement for a faster shutter speed or a more open or closed aperture. I've used his technique some, especially when there's an overabundance of white in a shot like when the ground is covered with snow. It often becomes a bit fiddly with the shadows in a shot. Has anyone tried that technique. What would be reasonable arguments against it?
I recently read where a pro said he uses "M&q... (show quote)


Except for not being so far to the right of the 0-mark, that's the process described above in my earlier post. Every model / brand is a bit different on where / how far to the right you can default. Most are fine a +0.7, others +1. Your photographer has found for their camera's RAW, +1.3 is best for their camera and their software recovery.

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Aug 24, 2021 10:40:07   #
camerapapi Loc: Miami, Fl.
 
I have always used manual ISO to my satisfaction but I will give a try to AUTO ISO. It makes sense especially for action and wildlife.

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