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How to use Auto-ISO

sathlersathler Member
edited February 2016 in general photography
#2 written by Alessandro Di Sciascio about 4 years ago

Nice post. It’s great to find someone else who is actually USING the amazing AUTOIso feature Nikon hooked us up with .

I shoot Nikon FX as well, recent convert from Canon actually. I don’t know if you found this feature or not but you can actually program the AE/L button (or any of the other programmable buttons) to Exposure LOCK and HOLD. You can then specify how long the meter remembers the exposure settings.

What this lets you do is the following… you can set the camera say to Aperture priority in AUTO ISO … meter on something, dial exposure compensation if appropriate then press your “Lock AND HOLD” button (if you want to try this it’s critical that you select LOCK and HOLD… and that you set a reasonably long timer (I use 30 minutes) on the meter. lock only is as worthless as on Canon LOL). The exposure will “Lock” essentially in the same way that it would in Manual. Hence say you’ve exposed for the bride’s face… you could move around her, photograph her against a bright window, against a dark wall… and the exposure would NOT change… just like in Manual.

But it gets better. Say that you’re shooting at F2.0 for some portraits while she’s getting dressed…. and you’re locked to expose her well in Aperture priority … you’re going about your business… when dad walks in. You can spin that Aperture dial to F8 in an instant and the amazing thing is that the camera will STILL give you the same exposure you were working with. The meter is essentially locking the Ev of the light as you metered it… so when you go from F2 to F8 it will vary the shutter speed and then the ISO (based on your AUTO Iso parameters). If you want to darken or lighten the exposure you are ALWAYS free to use the Exposure Compensation dial.

The huge benefit here is that you get the consistency of Manual with it’s post-processing benefits… and the amazing ease of Aperture priority (or shutter priority… it works with both). Oh yeah… it also works in Manual … so you can use AutoISO with Manual (to set specific A and S) and have the “Locked” benefits of non-autoISO WITH AutoISO.


Hope it can be beneficial to some people!



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