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03-01-2012, 06:38 PM   #1
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80 iso?

I have read several references on the forum the the K5 can be set to 80 ISO but when I dial down the ISO it does not seem to go lower than 100 ISO.

I mostly have the camera in Manual mode and RAW capture.

What am I missing?

Thanks.

03-01-2012, 06:46 PM   #2
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go into your menus and turn on expanded iso
03-01-2012, 06:47 PM   #3
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Go Custom #3 and turn on.
03-01-2012, 06:54 PM   #4
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Original Poster
Thank you - could not find in the manual.

Much appreciated.

Any reason not to leave camera in the expanded mode?

03-01-2012, 06:56 PM   #5
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not really, no.....unless you're clumsy and accidentally push it to ISO 51200
03-01-2012, 07:05 PM   #6
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Is there a discussion somewhere about the downside to expanded ISO range? I've always wondered why the just don't come with that setting there. Is it marketing?
03-01-2012, 08:10 PM   #7
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QuoteOriginally posted by callmeraymon Quote
Is there a discussion somewhere about the downside to expanded ISO range? I've always wondered why the just don't come with that setting there. Is it marketing?
Maybe so people don't accidently put it to 51200 like adpo mentioned, and then see the noise and return the camera?
03-01-2012, 09:01 PM   #8
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QuoteOriginally posted by callmeraymon Quote
Is there a discussion somewhere about the downside to expanded ISO range? I've always wondered why the just don't come with that setting there. Is it marketing?
Most of the time the expended ISO is just software change and not hardware so there is no real gain.
However it doens't always seem the case though on the lower part and thats quite intersting.

03-02-2012, 03:41 AM   #9
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Yeah, according to DxOMark - Pentax K-5, ISO 80 sensitivity actually has less noise and better dynamic range. I cannot fathom why it wouldn't be available by default.
03-02-2012, 02:20 PM   #10
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QuoteOriginally posted by topace Quote
Yeah, according to DxOMark - Pentax K-5, ISO 80 sensitivity actually has less noise and better dynamic range. I cannot fathom why it wouldn't be available by default.
And that is the part the perplexes me.
03-03-2012, 04:00 PM   #11
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Perhaps because other features like highlight correction require it to be turned off. I'm not saying that's the wisest decision they've made, or that expanded ISO shouldn't default to On, but that may be their reasoning.
03-03-2012, 07:01 PM   #12
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Lets blame Hoya, OK?
03-03-2012, 07:42 PM   #13
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QuoteOriginally posted by Philoslothical Quote
Perhaps because other features like highlight correction require it to be turned off. I'm not saying that's the wisest decision they've made, or that expanded ISO shouldn't default to On, but that may be their reasoning.
The d7000 use the same senor but doesn't have ISO 80 that makes it even more interesting.
03-03-2012, 07:56 PM   #14
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QuoteOriginally posted by Anvh Quote
The d7000 use the same senor but doesn't have ISO 80 that makes it even more interesting.
They are the same-ish. Just like the K-01 because it also doesn't have ISO 80 I believe....
03-03-2012, 08:50 PM   #15
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From what i know the D7000 and K5 sensor comes from the same serrie, not sure about the K-01, it could be a newer model.
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