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Understanding ISO-AUTO (ISO sensitivity auto control)


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#1 DigitalDarrell

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Posted 16 April 2010 - 06:45 PM

I just wrote a blog about using ISO-AUTO, or the ISO sensitivity auto control as it is officially known these days. It is based on the Nikon D300/D300s, but applies to most other Nikon DSLRs with only minor changes.

This is a commonly misunderstood function, and I hope this sheds some light on how it works:

http://darrellyoung....ensitivity.html

Hope you enjoy it. Comments?
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#2 Black Pearl

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Posted 17 April 2010 - 02:01 AM

Having spoken to some of the local press/football photographers they use Auto ISO with the camera in manual mode with their D3/D3s bodies. It allows them to set a specific shutter speed/aperture combination for the sort of shot they're after and leave the rest to the camera. As noise is not an issue with these bodies and the stuff will end up in a newspaper they just don't care about it. I have used it from time to time with the D200 when I'm out with the kids and don't mind what the results are like so long as I can just 'snap' away but the range of ISO I could get away with was limited to say the least. This is one of the things I'm really looking forward to when my insurance company finally pull their finger out and get me a new camera.
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#3 Mickaisy

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Posted 17 April 2010 - 09:59 AM

Great information as always Darrel. i believe you also explained this in my mastering the d5000 book. BP: I understand how sports photographers would use auto ISO, but i am surprised to hear they do manual shooting. i figure they would want to use some sort of the Auto Focus rather than manual focusing for those key moments and continuous shooting. Unless you can lock the manual focus setting i guess, but i don't know a thing about the powerful D3.
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#4 Charlie Choc

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Posted 22 July 2010 - 06:18 PM

Great information as always Darrel. i believe you also explained this in my mastering the d5000 book.

BP: I understand how sports photographers would use auto ISO, but i am surprised to hear they do manual shooting. i figure they would want to use some sort of the Auto Focus rather than manual focusing for those key moments and continuous shooting. Unless you can lock the manual focus setting i guess, but i don't know a thing about the powerful D3.


Manual mode doesn't preclude auto-focus, it's just manually setting shutter speed and aperture. Manual focus is another setting, on the lens instead of the camera.
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#5 Jack

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Posted 16 September 2010 - 11:32 PM

Manual mode doesn't preclude auto-focus, it's just manually setting shutter speed and aperture. Manual focus is another setting, on the lens instead of the camera.


So you're saying I can use Manual Mode on my D200 camera for speed and aperture, and set the lens to Auto Focus?

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#6 Mr Gladstone

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Posted 17 September 2010 - 04:57 AM

So you're saying I can use Manual Mode on my D200 camera for speed and aperture, and set the lens to Auto Focus?

thats right jack, you can. Manual mode pertains to exposure only. Mf/af is controlled by the switch on your lens. Happy shooting!
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#7 Jack

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Posted 17 September 2010 - 05:30 PM

thats right jack, you can. Manual mode pertains to exposure only. Mf/af is controlled by the switch on your lens. Happy shooting!


Thank you, Sir! That's what I thought, and you just confirmed it! :)

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#8 Charlie Choc

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Posted 20 September 2010 - 05:56 AM

So you're saying I can use Manual Mode on my D200 camera for speed and aperture, and set the lens to Auto Focus?


Correct.
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#9 Gary Worrall

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Posted 22 September 2010 - 07:45 PM

Tks Darrell, Ever since I moved from film to digital, I've had trouble stepping out of the "comfort zone" In the old wedding days, the incident meter hanging around my neck was only for looks ;) Used it against the white dress just see if the meter was still working OK ;) The arrival of the D700 changed everything, soon found out the "shoot high ISO without impunity" was an expression used rather loosly by skilled digital users and the dynamic range can end in tears for the uninitiated I had a quick try a while back with limited success, I should re-visit this option now I have more confidence with the camera Regards, Gary

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