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Exposure Compensation in Auto ISO?
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Apr 25, 2017 19:06:53   #
Patw28 Loc: PORT JERVIS, NY
 
How can you vary the exposure compensation in auto ISO mode?
On the Lumix FZ1000 in auto ISO the camera always sets the EC to zero as I vary the F, S setings. ???

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Apr 25, 2017 19:22:12   #
Linda From Maine Loc: Yakima, Washington
 
Page 44 of your user manual. You can't be in manual mode or auto ISO to use exposure compensation. Select shutter priority, aperture priority, program mode (a couple other choices too) + set your ISO. Then do your compensation.

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Apr 25, 2017 19:35:21   #
rmalarz Loc: Tempe, Arizona
 
I would not make sense to have EC and Auto ISO working at the same time. Auto ISO is already compensating for changes in illumination.
--Bob

Patw28 wrote:
How can you vary the exposure compensation in auto ISO mode?
On the Lumix FZ1000 in auto ISO the camera always sets the EC to zero as I vary the F, S setings. ???

Reply
 
 
Apr 25, 2017 20:15:12   #
BebuLamar
 
rmalarz wrote:
I would not make sense to have EC and Auto ISO working at the same time. Auto ISO is already compensating for changes in illumination.
--Bob


I never use the exposure compensation but rather switch to manual. However, when I use Auto ISO I have to use the exposure compensation to increase or decrease exposure because even in manual it would follow the meter recommendation.

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Apr 25, 2017 20:18:29   #
DaveO Loc: Northeast CT
 
BebuLamar wrote:
I never use the exposure compensation but rather switch to manual. However, when I use Auto ISO I have to use the exposure compensation to increase or decrease exposure because even in manual it would follow the meter recommendation.


I do as well and believe this too be true.

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Apr 25, 2017 20:29:22   #
Jim Bob
 
rmalarz wrote:
I would not make sense to have EC and Auto ISO working at the same time. Auto ISO is already compensating for changes in illumination.
--Bob


WTF? What you just said makes no sense because it assumes auto ISO will provide the exact exposure desired by the photographer. Maybe that is your experience. But it is certainly not mine.

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Apr 25, 2017 21:20:01   #
rmalarz Loc: Tempe, Arizona
 
WTF, yourself, put some thought into what I wrote and you'll see two conflicting systems working against one another.
--Bob

Jim Bob wrote:
WTF? What you just said makes no sense because it assumes auto ISO will provide the exact exposure desired by the photographer. Maybe that is your experience. But it is certainly not mine.

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Apr 25, 2017 21:39:51   #
Peterff Loc: O'er The Hills and Far Away, in Themyscira.
 
rmalarz wrote:
WTF, yourself, put some thought into what I wrote and you'll see two conflicting systems working against one another.
--Bob


It could be brand or individual camera model dependent and a question of which mode takes priority depending on the settings. At least, that's what a quick experiment showed...

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Apr 25, 2017 21:41:12   #
Apaflo Loc: Anchorage, Alaska
 
rmalarz wrote:
WTF, yourself, put some thought into what I wrote and you'll see two conflicting systems working against one another.
--Bob

Auto ISO is not technically different than Auto Shutter Speed or Auto Aperture. The output of the light meter is used to control either ISO, the Shutter Speed or the Aperture opening. The light meter just measures light and does not adjust for the artistic desire of the photographer. That is what Exposure Compensation does, by changing the output of the light meter (which secondarily then of course affects whatever is being controlled by the light meter output).

If Exposure Compensation is useful in Shutter Priority mode, or in Aperture Priority mode, it will be exactly that useful in Auto ISO mode too.

Exposure Compensation is the way that any of the Auto modes can be adjusted specifically, per image if you like, to your concept of the exposure that much light requires.

It happens that using Auto ISO at the same time that shutter speed and aperture are being set manually, and then using Exposure Compensation as a way to fine tune exposure, is one of the best and most convenient methods of controlling all of the artistic characteristics while making an image.

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Apr 25, 2017 21:43:48   #
rgrenaderphoto Loc: Hollywood, CA
 
rmalarz wrote:
I would not make sense to have EC and Auto ISO working at the same time. Auto ISO is already compensating for changes in illumination.
--Bob


Thank you. I just took a Nikon Fundamentals of Photography class over the weekend. Learned a few things, one of which was exposure compensation and auto ISO do not mix.

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Apr 25, 2017 21:45:13   #
rmalarz Loc: Tempe, Arizona
 
I'm in your camp with not using exposure compensation. The compensation is done with either shutter speed, aperture, or the combination of both. I experimented with Auto ISO about 7 years ago. That showed me that it is better for me to decide than let the camera make decisions.
--Bob

BebuLamar wrote:
I never use the exposure compensation but rather switch to manual. However, when I use Auto ISO I have to use the exposure compensation to increase or decrease exposure because even in manual it would follow the meter recommendation.

Reply
 
 
Apr 25, 2017 21:49:41   #
Apaflo Loc: Anchorage, Alaska
 
rmalarz wrote:
I would not make sense to have EC and Auto ISO working at the same time. Auto ISO is already compensating for changes in illumination.
--Bob

Your statement is confused. Auto ISO is just that: auto. Exposure Compensation is an absolutely manual adjustment to bias anything that is being auto controlled by the light meter output. The are not ever working at cross purposes.

On the other hand, using Auto ISO along with Aperture Priority or Shutter Priority, or an fully Auto Exposure mode (Program Mode or what ever it might be called) is exactly the bag of worms you describe. Not that it can't be useful, but it takes a great deal of understanding to realize what it will do in any particular circumstance (which generally means it isn't worth using that way).

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Apr 25, 2017 21:51:09   #
Apaflo Loc: Anchorage, Alaska
 
rgrenaderphoto wrote:
Thank you. I just took a Nikon Fundamentals of Photography class over the weekend. Learned a few things, one of which was exposure compensation and auto ISO do not mix.

You misunderstood somebody, because Nikon most certainly did not tell you that!

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Apr 25, 2017 21:57:57   #
Peterff Loc: O'er The Hills and Far Away, in Themyscira.
 
rmalarz wrote:
I'm in your camp with not using exposure compensation. The compensation is done with either shutter speed, aperture, or the combination of both. I experimented with Auto ISO about 7 years ago. That showed me that it is better for me to decide than let the camera make decisions.
--Bob


My personal experience is just the opposite. I do try not to use more than one automation mode at a time, but I find that exposure compensation and automation modes (including auto ISO) can play very nicely together. Perhaps it is a camera brand thing. What I noticed in my very small experiment was that the automation modes switched priority depending upon the lighting circumstances, which is pretty much what full auto or program modes can do, hence my preference for only a single auto mode at any time. It gets even more interesting if one brings flash exposure compensation into the mix.

Multiple auto modes can work well together, but it is clearly hard to predict or control what the camera will decide to do.

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Apr 25, 2017 22:11:39   #
rook2c4 Loc: Philadelphia, PA USA
 
rmalarz wrote:
I would not make sense to have EC and Auto ISO working at the same time. Auto ISO is already compensating for changes in illumination.
--Bob


There may be situations when one would wish to exposure compensate a series of shots by a specific amount, but still use Auto ISO to retain fixed aperture and shutter speed values.

Personally, I'd rather take the camera off Auto ISO altogether in such situations, and adjust the ISO setting manually to achieve the desired compensation of exposure. However, I rarely ever use Auto ISO anyway.

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