ISO Auto on E-620 - Brian Mosley, Chris in Osaka

Sylvain G · Mar 27, 2009

Hello,

Page 102 of Olympus E-620 indicates that ISO Auto can be set in M mode too.

If I understand that correctly, I'm expecting it to adjust ISO to reach correct exposure at manually selected aperture & shutter speed. While it may not appear as flexible as Pentax system, it seems pretty useful to me.

Could you please run a quick test session and share your experiences about it?

Greetings,
S.

Holgs · Mar 27, 2009

All the E system cameras that I'm aware of can select an Auto ISO when in Manual setting, and it pretty much does what you describe. Obviously it doesn't go outside the ISO range of 100-3200, or whatever you set as the maximum auto ISO value (I use 400).
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knoblock · Mar 27, 2009

The E-510 manual says sensitivity is fixed to ISO100 when flash is not firing in M mode. I can confirm this.

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talephotos · Mar 27, 2009

I think the E-3 was the first olympus to have this feature. Not sure if any others have but from your post I assume both e-30 and e-620 do. On the e-3 it works how you describe. How does it work on pentax?
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Holgs · Mar 27, 2009

Ok... well I'm pretty sure the E420 does also, so I assume the E520 as well?
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sebboh · Mar 28, 2009

it doesn't work on my e520 unless there is a special menu item somewhere to activate it that i missed. it certainly doesn't by default (i seem to have misplaced my manual so i can't check that for sure).

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Rriley · Mar 28, 2009

talephotos said:
I think the E-3 was the first olympus to have this feature. Not sure
if any others have but from your post I assume both e-30 and e-620
do. On the e-3 it works how you describe.

yes thats right

so you can set aperture for DoF, and shutter as applicable, and Auto ISO will adjust the exposure. But it will do so within the limits you set, I have max ISO of 1000 set, so it only goes that far.

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Brian Mosley · Mar 28, 2009

Yes - the E-620 (and E-30) allow you to enable Auto ISO in Manual exposure mode... which means that when you set Aperture + Shutter speed, the ISO is automatically adjusted to keep the exposure to the AE ideal.

The Auto ISO upper limit is observed in this mode, but not the lower ISO limit.

So, if necessary the Auto ISO will drop to ISO 100.

Hope that helps

Kind Regards

Brian
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Sylvain G · Apr 1, 2009

Thanks Brian.

A question though. In manual, the user is responsible for over or under exposing in his creative process and therefore exposure compensation has no meaning anymore.

What happens when autoiso is set in manual. Autoiso will adjust to get the proper exposure so I guess exposure compensation becomes necessary again?

Brian Mosley said:
Yes - the E-620 (and E-30) allow you to enable Auto ISO in Manual
exposure mode... which means that when you set Aperture + Shutter
speed, the ISO is automatically adjusted to keep the exposure to the
AE ideal.

The Auto ISO upper limit is observed in this mode, but not the
lower ISO limit.

So, if necessary the Auto ISO will drop to ISO 100.

Hope that helps

Kind Regards

Brian
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Sylvain G · Apr 1, 2009

From what I recall from these e-420 and e-520 user instruction manuals. When auto iso is set in manual, it's locked on ISO 400 if I remember correctly.

Brian's reply seem to imply that it's new from oly E-30 & E-620.

Brian Mosley · Apr 1, 2009

Olympus didn't allow for EV compensation in Manual Exposure mode, when Auto ISO is enabled... so you have to know how to get the Auto Exposure to do what you want, using AE lock / spot metering perhaps?

Kind Regards

Brian
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Brian Mosley · Apr 1, 2009

I haven't checked in the same detail for the E-30, but I expect it to be identical.

Kind Regards

Brian
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Sylvain G · Apr 1, 2009

that's what I thought indeed.
Seems like a really great option to me!

Holgs · Apr 1, 2009

Sylvain G said:
From what I recall from these e-420 and e-520 user instruction
manuals. When auto iso is set in manual, it's locked on ISO 400 if I
remember correctly.

Nope its available as a custom option on the E420 & E520 - p87 of the manual - once selected it will work the same as it does in other modes.

Sylvain G said:
Brian's reply seem to imply that it's new from oly E-30 & E-620.
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BorisK1 · Apr 1, 2009

Brian Mosley said:
Olympus didn't allow for EV compensation in Manual Exposure mode,
when Auto ISO is enabled... so you have to know how to get the Auto
Exposure to do what you want, using AE lock / spot metering perhaps?

With flash enabled, Auto ISO in M mode becomes more useful (in my E-300, Auto-ISO only works with flash anyway, with the exception of the Sports mode). And with flash, you have flash EC / flash power adjustment.

Boris

brycesteiner · Apr 1, 2009

500 was the same way. Auto ISO doesn't work very well on 510
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brycesteiner · Apr 1, 2009

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Dennis1954 · Apr 1, 2009

up to the max you set in the menu options. Just tested it and it works fine.

Dennis

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Sylvain G · Apr 2, 2009

Brian, I was thinking, is there a custom button to which you can assign any menu shortcut? So that one could bind this to auto iso on or off quickly.

Thanks for your help

ISO Auto on E-620 - Brian Mosley, Chris in Osaka

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