7D Auto ISO vs. fixed ISO?

Started Apr 6, 2014 | Questions
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RGF Forum Member • Posts: 60
7D Auto ISO vs. fixed ISO?

Using auto ISO today (over cast and low light) all of my images out of focus.  looking at the info it showed the ISO at 3200.  I am using the 7D with a 100-400 L lens.  Really got no keepers.  I am having difficulty comprehending the ISO setting as some say they never use Auto - I guess now I see why?  Any suggestions on camera settings would be helpful.  I used M, AV, and TV modes.

Thanks,

RGF

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Canon EOS 7D
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RGF OP Forum Member • Posts: 60
Re: 7D Auto ISO vs. fixed ISO?

Also - this was for BIF photos and waterfowl resting on the water.

RGF

Don Richardson Senior Member • Posts: 1,454
Re: 7D Auto ISO vs. fixed ISO?

RGF wrote:

Using auto ISO today (over cast and low light) all of my images out of focus. looking at the info it showed the ISO at 3200. I am using the 7D with a 100-400 L lens. Really got no keepers. I am having difficulty comprehending the ISO setting as some say they never use Auto - I guess now I see why? Any suggestions on camera settings would be helpful. I used M, AV, and TV modes.

Thanks,

RGF

I have a 7D and 150-600 mm and Tamron 70-300 and shoot Shutter speeds between 2500-500 depending on light and use Auto ISO all the time. You'd be suprised at the low ISO I get at 2000 shutter speed Check out my zenfolio for thaen with 150-600 of Taken with 70-300. They should be on top row as all in both have been taken in last month and I'm pretty sure I used Auto ISO on all of them,

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Lanidrac Veteran Member • Posts: 7,544
What BIF photos?

RGF wrote:

Also - this was for BIF photos and waterfowl resting on the water.

RGF

Are we supposed to use our imagination of the photos that you took?

If you had a clue about the 7D, which I doubt that you even used or should not be using, you'd know that you can set maximum Auto ISO ranges with the camera.

Lanidrac.

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Lanidrac Veteran Member • Posts: 7,544
Re: 7D Auto ISO vs. fixed ISO?

Don Richardson wrote:

RGF wrote:

Using auto ISO today (over cast and low light) all of my images out of focus. looking at the info it showed the ISO at 3200. I am using the 7D with a 100-400 L lens. Really got no keepers. I am having difficulty comprehending the ISO setting as some say they never use Auto - I guess now I see why? Any suggestions on camera settings would be helpful. I used M, AV, and TV modes.

Thanks,

RGF

I have a 7D and 150-600 mm and Tamron 70-300 and shoot Shutter speeds between 2500-500 depending on light and use Auto ISO all the time. You'd be suprised at the low ISO I get at 2000 shutter speed Check out my zenfolio for thaen with 150-600 of Taken with 70-300. They should be on top row as all in both have been taken in last month and I'm pretty sure I used Auto ISO on all of them,

-- hide signature --

Tell me that ain't so. You use auto-iso ALL the time??? Wow.

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RGF OP Forum Member • Posts: 60
Re: What BIF photos?

Thanks for the "constructive criticism" - geez - do you really need a sample - when I say oof -  I meant it.  Yes I know the 7d have had it for a few years - unfortunately don't know everything about it - was merely seeking a little help!

RGF

RGF OP Forum Member • Posts: 60
Re: 7D Auto ISO vs. fixed ISO?

Thanks Don

RGF

Lanidrac Veteran Member • Posts: 7,544
Constructive

RGF wrote:

Thanks for the "constructive criticism" - geez - do you really need a sample - when I say oof - I meant it. Yes I know the 7d have had it for a few years - unfortunately don't know everything about it - was merely seeking a little help!

RGF

Try being specific then. We don't read minds. Maybe learn the gear you have or read the manual before posting too would be good??

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RGF OP Forum Member • Posts: 60
Re: 7D Auto ISO vs. fixed ISO?

RGF

birdbrain
birdbrain Veteran Member • Posts: 3,480
Re: 7D Auto ISO vs. fixed ISO?

RGF wrote:

Using auto ISO today (over cast and low light) all of my images out of focus. looking at the info it showed the ISO at 3200. I am using the 7D with a 100-400 L lens. Really got no keepers. I am having difficulty comprehending the ISO setting as some say they never use Auto - I guess now I see why? Any suggestions on camera settings would be helpful. I used M, AV, and TV modes.

Thanks,

RGF

Auto ISO is brilliant, when used in the right situations

I shoot lots of planes at air-shows, I am tracking these across the sky doing my best to keep them in the frame

I have to rely on the camera to make the exposure for me, I shoot TV with a shutter speed of 1/250 and auto ISO and anything from +1 to +2 EC as I am shooting against the sky. I use Auto ISO and it works excellently.

If you want to see results of using Auto ISO go to my Flickr site and look at the planes in the sky they were all Auto ISO 7D with 100-400 mostly.

Here's one:

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Phil
I wondered why the ball kept getting bigger, then it hit me.
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PK62
PK62 Contributing Member • Posts: 955
Re: 7D Auto ISO vs. fixed ISO?

I've had the 7D for a couple of years and almost always use Auto ISO for birds.  I just adjust the exposure.  I've tried using different ISO settings and just seem to have better luck with Auto.   I do have the maximum set though.

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Patti

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phill104 Senior Member • Posts: 2,735
Re: What BIF photos?
1

Lanidrac wrote:

RGF wrote:

Also - this was for BIF photos and waterfowl resting on the water.

RGF

Are we supposed to use our imagination of the photos that you took?

If you had a clue about the 7D, which I doubt that you even used or should not be using, you'd know that you can set maximum Auto ISO ranges with the camera.

Lanidrac.

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Is there anything wrong with politely asking rather than being obtuse?

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Don Richardson Senior Member • Posts: 1,454
Re: 7D Auto ISO vs. fixed ISO?

Lanidrac wrote:

Don Richardson wrote:

RGF wrote:

Using auto ISO today (over cast and low light) all of my images out of focus. looking at the info it showed the ISO at 3200. I am using the 7D with a 100-400 L lens. Really got no keepers. I am having difficulty comprehending the ISO setting as some say they never use Auto - I guess now I see why? Any suggestions on camera settings would be helpful. I used M, AV, and TV modes.

Thanks,

RGF

I have a 7D and 150-600 mm and Tamron 70-300 and shoot Shutter speeds between 2500-500 depending on light and use Auto ISO all the time. You'd be suprised at the low ISO I get at 2000 shutter speed Check out my zenfolio for thaen with 150-600 of Taken with 70-300. They should be on top row as all in both have been taken in last month and I'm pretty sure I used Auto ISO on all of them,

-- hide signature --

Tell me that ain't so. You use auto-iso ALL the time??? Wow.

-- hide signature --

I don't use it 100% of the time but I set Max. ISO at 1600 and probably use it 80% of the time and wouldn't you know I shoot birds 80% of the time also.. You should try it. On bright days I'll get 320-400 ISO at 2000 shutter speed with very little noise. I use AV and set ISO the other 20% but as light changes I forget to change ISO.

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Don Richardson Senior Member • Posts: 1,454
Re: Constructive
4

Lanidrac wrote:

RGF wrote:

Thanks for the "constructive criticism" - geez - do you really need a sample - when I say oof - I meant it. Yes I know the 7d have had it for a few years - unfortunately don't know everything about it - was merely seeking a little help!

RGF

Try being specific then. We don't read minds. Maybe learn the gear you have or read the manual before posting too would be good??

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Seems to me you're one of those that just likes to be rude. Try smiling.

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Abu Mahendra Senior Member • Posts: 4,014
Re: 7D Auto ISO vs. fixed ISO?

AutoISO probably had nothing to do with it.

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Kaso Senior Member • Posts: 2,701
Re: Constructive
2

Don Richardson wrote:

Seems to me you're one of those that just likes to be rude. Try smiling.

Select the first option under that obnoxious post:

And block out the noise from now on.

MarshallG
MarshallG Veteran Member • Posts: 3,388
Re: What BIF photos?

RGF wrote:

Also - this was for BIF photos and waterfowl resting on the water.

RGF

Are we supposed to use our imagination of the photos that you took?

If you had a clue about the 7D, which I doubt that you even used or should not be using, you'd know that you can set maximum Auto ISO ranges with the camera.

Lanidrac.

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No need for the rude comment. If you don't want to help (nicely!), then don't click Reply.

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RGF OP Forum Member • Posts: 60
Re: 7D Auto ISO vs. fixed ISO?

Thanks everyone for your suggestions and help - really appreciate it.  I did set the max to ISO 1600 and will see how that goes.

RGF

jhendrix Senior Member • Posts: 2,086
Re: 7D Auto ISO vs. fixed ISO?

RGF wrote:

Thanks everyone for your suggestions and help - really appreciate it. I did set the max to ISO 1600 and will see how that goes.

RGF

Could you share what other settings are being used? A, P, TV, single point AF, etc.

Abu Mahendra Senior Member • Posts: 4,014
Re: 7D Auto ISO vs. fixed ISO?

Rather than setting the max ISO, you should set the minimum shutter speed under AutoISO. Indeed setting the max ISO to 1600 might be the reason for the blurry pics for the camera will then select longer shutter speeds in order to expose correctly. You need to understand that AutoISO is an ISO-minimizing function. It will try to set the lowest shutter speed required for i. proper exposure and ii. satisfy the 1/FL criterion.

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