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03-27-2015, 11:55 AM   #1
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k3 and auto iso

Hallo,
Pls help, is it possible to use auto iso during AV and TV mode?

I know how TAV mode works. But I need to know if it's possible to use it in AV and TV mode.

Thx for help...

03-27-2015, 12:32 PM   #2
hcc
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Yes definitely in TV. (I do not use AV) In M also, ISO is on Auto ISO unless you set manually ISO (that I usually do in M).
03-27-2015, 12:33 PM   #3
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Yes. It is in the camera manual. While holding down the ISO button, press the green button. The only modes where you can't choose between auto and fixed ISO are Sv (duh), TAv, M, B, and X.


Steve
03-27-2015, 12:42 PM   #4
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QuoteOriginally posted by hcc Quote
In M also, ISO is on Auto ISO unless you set manually ISO (that I usually do in M).
????

This is true for the K-50 and several other Pentax bodies where the camera does a silent fail-over to TAv, but M mode on the K-3 is truly manual for aperture, shutter speed, and ISO with no funny business.


Steve


Last edited by stevebrot; 03-27-2015 at 12:49 PM.
03-27-2015, 12:50 PM   #5
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QuoteOriginally posted by stevebrot Quote
????

This is true for the K-50 and several other Pentax bodies (actually a silent fail-over to TAv), but M mode on the K-3 is truly manual for aperture, shutter speed, and ISO with no funny business.


Steve
If you turn on Auto-ISO in M mode, you have entered TAv.
03-27-2015, 12:54 PM   #6
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QuoteOriginally posted by enoeske Quote
If you turn on Auto-ISO in M mode, you have entered TAv.
The K-30 and K-50 inherited their firmware from th K-01. The K-01 used AutoISO in M mode as a pseudoTAv. All other Pentax DSLRs behave correctly AFAIK.
03-27-2015, 12:56 PM   #7
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QuoteOriginally posted by enoeske Quote
If you turn on Auto-ISO in M mode, you have entered TAv.
I don't believe that is possible. I have my K-3 in hand (firmware v1.11) and it will not switch to auto-iso when in M mode. In my opinion, that is one of the strong points of the camera.* If you are able to do otherwise, please provide step-by-step instructions. I may have an empty space in experience with the K-3.


Steve

* I am not a fan of Auto-ISO...too many troubleshooting requests on this site where it was the underlying cause of user confusion...

Last edited by stevebrot; 03-27-2015 at 01:02 PM.
03-27-2015, 01:02 PM   #8
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QuoteOriginally posted by stevebrot Quote
Yes. It is in the camera manual. While holding down the ISO button, press the green button. The only modes where you can't choose between auto and fixed ISO are Sv (duh), TAv, M, B, and X.


Steve
Thanks a lot for your help!!!!

03-27-2015, 01:05 PM   #9
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QuoteOriginally posted by boriscleto Quote
All other Pentax DSLRs behave correctly AFAIK.
That is my understanding as well.


Steve
03-27-2015, 02:58 PM   #10
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QuoteOriginally posted by boriscleto Quote
The K-30 and K-50 inherited their firmware from th K-01. The K-01 used AutoISO in M mode as a pseudoTAv. All other Pentax DSLRs behave correctly AFAIK.
-- Yes. K-5II in M mode has no auto ISO mode.
-- On my K-01 auto ISO is possible in M mode - and then TAv is displayed on the lcd.
03-27-2015, 03:23 PM - 1 Like   #11
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QuoteOriginally posted by stevebrot Quote
I don't believe that is possible. I have my K-3 in hand (firmware v1.11) and it will not switch to auto-iso when in M mode. In my opinion, that is one of the strong points of the camera.* If you are able to do otherwise, please provide step-by-step instructions. I may have an empty space in experience with the K-3.
I'm pretty sure you're right. What would be the point of a dedicated TAv setting if auto ISO were also possible in M mode...

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03-27-2015, 03:49 PM   #12
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QuoteOriginally posted by Adam Quote
What would be the point of a dedicated TAv setting if auto ISO were also possible in M mode...
But it is on the K-30/50/500.
03-27-2015, 03:59 PM   #13
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QuoteOriginally posted by boriscleto Quote
But it is on the K-30/50/500.
Where it has caused no end to the confusion of unsuspecting users.


Steve
03-28-2015, 02:55 AM   #14
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QuoteOriginally posted by Adam Quote
I'm pretty sure you're right. What would be the point of a dedicated TAv setting if auto ISO were also possible in M mode...
The TAv mode have the advantage of having auto-ISO that is not possible to disable.

It's about the same advantage as also have Av and Tv modes on cameras with Hyper-Program mode. Just because Av and Tv is available in Hyper-Program, does not mean that there is no use of having dedicated Av and Tv modes.

But on cameras with auto-ISO in M-mode and dedicated TAv-mode, it would be nice to have an option to disable auto-ISO in M-mode.

Last edited by Fogel70; 03-28-2015 at 03:02 AM.
04-02-2015, 10:34 AM   #15
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QuoteOriginally posted by stevebrot Quote
While holding down the ISO button, press the green button.
Steve, this makes perfect sense. But it begs the question how does this get fouled up in the first place?

Jeff
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