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Jun 8, 2019 15:27:48   #
srt101fan
 
BebuLamar wrote:
I only have one camera with auto ISO feature, the Nikon Df. I use it on A with Auto ISO very often and this is what it does.
I set the minimum ISO at 100 and the maximum ISO at 12800. I generally set the aperture of f/8 or f/5.6. The camera would adjust the shutter speed only in bright light. In bright light the shutter can go up to 1/1000 or 1/500 depending on the aperture selected. As the light get darker it would drop the shutter speed down. When the shutter speed needed for correct exposure is slower than 1/focal length it starts to increase the ISO and not slow the shutter speed any slower than 1/focal length. When the ISO reached the maximum of 12800 it would continue to slow the shutter speed down further.
I have never used it on P but I will find out and report back if you're interested.
I only have one camera with auto ISO feature, the ... (show quote)


Thank you, Bebu, I think this is the kind of information the OP was interested in! With this info, and something similar for Auto ISO used with shutter priority, he can better decide which way to go.

But, then again, maybe that's not what the OP is looking for at all. I wish he'd come back and comment! 😐

(PS - Auto ISO with P! Now that is scary...)

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Jun 8, 2019 15:44:08   #
BebuLamar
 
srt101fan wrote:
Thank you, Bebu, I think this is the kind of information the OP was interested in! With this info, and something similar for Auto ISO used with shutter priority, he can better decide which way to go.

But, then again, maybe that's not what the OP is looking for at all. I wish he'd come back and comment! 😐

(PS - Auto ISO with P! Now that is scary...)


As I expected Auto ISO with P is pretty much the same as P. The camera would use the low ISO limit and follow the program chart (There is a program chart in the Nikon Df manual, Nikon doesn't include this charte with all cameras though) except that when the shutter speed has to be lower than 1/focal length then it would increase the ISO. In S mode pretty much the same. It use the lower ISO limit and adjust the aperture. When the aperture can not open any more it increases the ISO.
For me I use A mode with Auto ISO because for most of the pictures that I take the shutter speed as long as it's higher than the hand holding speed is rather irrelevant. I do not want my aperture to be any larger than f/4. I would only want to use aperture smaller than f/8 in case I need the extra DOF but in most situation not.

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Jun 8, 2019 15:57:26   #
srt101fan
 
BebuLamar wrote:
As I expected Auto ISO with P is pretty much the same as P. The camera would use the low ISO limit and follow the program chart (There is a program chart in the Nikon Df manual, Nikon doesn't include this charte with all cameras though) except that when the shutter speed has to be lower than 1/focal length then it would increase the ISO. In S mode pretty much the same. It use the lower ISO limit and adjust the aperture. When the aperture can not open any more it increases the ISO.
For me I use A mode with Auto ISO because for most of the pictures that I take the shutter speed as long as it's higher than the hand holding speed is rather irrelevant. I do not want my aperture to be any larger than f/4. I would only want to use aperture smaller than f/8 in case I need the extra DOF but in most situation not.
As I expected Auto ISO with P is pretty much the s... (show quote)


Thanks, Bebu. Like you said in an earlier post, we should understand how the camera works in different modes before we use them.

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Jun 8, 2019 16:42:14   #
PHRubin Loc: Nashville TN USA
 
Using shutter or aperture priority and auto ISO means you can't predict what the camera will do. I'd use Manual and auto ISO.

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Jun 8, 2019 16:44:24   #
BebuLamar
 
PHRubin wrote:
Using shutter or aperture priority and auto ISO means you can't predict what the camera will do. I'd use Manual and auto ISO.


As in my couple of posts previously I know exactly how aperture priority and auto ISO work. I wouldn't use any mode without knowing how it would work.

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Jun 8, 2019 16:59:13   #
PHRubin Loc: Nashville TN USA
 
BebuLamar wrote:
As in my couple of posts previously I know exactly how aperture priority and auto ISO work. I wouldn't use any mode without knowing how it would work.


What I meant is if the light changes, which setting will IT adjust, the ISO or the shutter speed (or aperture if aperture priority)

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Jun 8, 2019 17:03:14   #
BebuLamar
 
PHRubin wrote:
What I meant is if the light changes, which setting will IT adjust, the ISO or the shutter speed (or aperture if aperture priority)


I know exactly what setting it will set at any light levels. If you care to read my previous post. Otherwise I will have to repeat.

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Jun 8, 2019 17:11:16   #
amfoto1 Loc: San Jose, Calif. USA
 
watersedge wrote:
is manual setup of shutter speed and apparture and using auto iso better than using apperature or shutter speed prority and iso auto


I only ever use Auto ISO with Manual.... which basically makes it a aperture AND shutter priority auto exposure mode.

I cannot think of any way it might be useful or helpful to combine Auto ISO with any of the other auto exposure modes: aperture priority, shutter priority or program. In fact, it might even cause problems using Auto ISO with those other AE modes.

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Jun 8, 2019 19:05:17   #
Charlie C Loc: North Liberty, IA
 
Nikon's A mode with Auto iso will go to the maximum iso set as light falls THEN it will start to drop shutter speeds. No matter the mode one should always monitor the viewfinder.

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Jun 8, 2019 19:16:46   #
srt101fan
 
Charlie C wrote:
Nikon's A mode with Auto iso will go to the maximum iso set as light falls THEN it will start to drop shutter speeds. No matter the mode one should always monitor the viewfinder.


Did you read BebuLamar's post on p.3?

Sounds like you have a different view of how the camera reacts to changing light when you use Auto ISO with aperture priority!?

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Jun 8, 2019 19:24:03   #
PAR4DCR Loc: A Sunny Place
 
mwsilvers wrote:
Depends on what you shooting and how you prefer to control your camera. For the most part equally good images can be captured either way.


For me the above is true but to each his own

Don

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Jun 8, 2019 23:25:34   #
ialvarez50
 
watersedge wrote:
is manual setup of shutter speed and apparture and using auto iso better than using apperature or shutter speed prority and iso auto


Using auto ISO in your camera will prevent you from learning photography properly. Think about this; in the past students of photography using film in their camera, learn how to properly expose the film without changing the ASA in the camera since doing that was not going to help them to get better photos. Students simply learn how to use the film without having to change the ASA (ISO for your digital camera).
Any student of photography should learn how to capture images under any light conditions without changing anything to auto.

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Jun 9, 2019 04:23:57   #
TonyBrown
 
Fast moving subjects I use M with auto iso other times I use M and set my own iso.

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Jun 9, 2019 04:23:58   #
TonyBrown
 
Fast moving subjects I use M with auto iso other times I use M and set my own iso.

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Jun 10, 2019 12:52:28   #
srt101fan
 
ialvarez50 wrote:
Using auto ISO in your camera will prevent you from learning photography properly. Think about this; in the past students of photography using film in their camera, learn how to properly expose the film without changing the ASA in the camera since doing that was not going to help them to get better photos. Students simply learn how to use the film without having to change the ASA (ISO for your digital camera).
Any student of photography should learn how to capture images under any light conditions without changing anything to auto.
Using auto ISO in your camera will prevent you fro... (show quote)


I respect your knowledge as a photographer and teacher. But I can't fully agree with your opening sentence. I think too much is made of "learning the old way". In today's photography universe, ISO settings are an integral element of a "camera+photo editing software" system. As such ISO should be learned up front, along with aperture and shutter speed adjustments.

With regard to your comment, "Any student of photography should learn how to capture images under any light conditions without changing anything to auto":

In the old days, other than using the "sunny 16 rule", didn't you set film exposure with the aid of a built-in or hand-held light meter? Then you either accepted the settings suggested by the light meter or you didn't. Now, when shooting in something like Manual with Auto ISO, the camera's meter suggests an ISO value. You either accept it or you don't. How is this worse than "the old way"?

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