Re: Green mode versus P with auto-iso

2017-02-10 Thread Alan C
Figures. BTW, checked my K110D & K7. The former allows RAW in Auto but not 
the latter.


Alan C

-Original Message- 
From: Larry Colen

Sent: Friday, February 10, 2017 12:05 PM
To: Pentax-Discuss Mail List
Subject: Green mode versus P with auto-iso

I went on a walk today while Mom was going to be taking a nap and
experimented with green mode (on raw) versus P with auto-iso on the K-1.
It seems that green mode would push the ISO a lot harder, initially
going for a faster shutter speed, then when there was enough light a
much smaller aperture (higher f-stop).  My guess is that they figure if
someone is using green mode, they don't know how to hold a camera.


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Green mode versus P with auto-iso

2017-02-10 Thread Larry Colen
I went on a walk today while Mom was going to be taking a nap and 
experimented with green mode (on raw) versus P with auto-iso on the K-1.
It seems that green mode would push the ISO a lot harder, initially 
going for a faster shutter speed, then when there was enough light a 
much smaller aperture (higher f-stop).  My guess is that they figure if 
someone is using green mode, they don't know how to hold a camera.



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Re: K-1 Turning Off Auto ISO

2016-11-21 Thread John Francis
On Sun, Nov 20, 2016 at 03:18:05PM -0700, jtainter wrote:
> 
> As far as I can tell, the manual does not say how to turn off Auto ISO. I've 
> had no trouble like this in previous Pentax DSLRs that I've owned. Odd that 
> in a professional-grade camera, there is no easy way to turn off a feature 
> designed for beginners.
> 
> Joe
> 

(I don't have a K-1, but I can make a pretty good guess as to how you would do 
this).

If you're trying to turn off auto-ISO, then presumably you want to set a 
particular ISO.
And, if you do that, auto-ISO will indeed be turned off.  You can turn it back 
on again
by choosing "auto" on the ISO selection, rather than 100, or 800, or whatever 
you decide.

What I might have to refer to the manual for is how to set the upper and lower 
limits
for the auto-ISO range, but that's a rather different question.

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Re: K-1 Turning Off Auto ISO

2016-11-21 Thread John

But if they didn't think users would need the information, why did they
put it in the manual?


On 11/20/2016 10:11 PM, P.J. Alling wrote:

Which is exactly the way the K-5[II[s]] works.  To set auto ISO the
K20D  required a trip to the Fn ISO menu.  Maybe the manual writers for
the K-1 assume that the only people who'd buy a K-1 at one time used a
K-7, K-5 or K-3, so they didn't need the information.

On 11/20/2016 6:09 PM, John wrote:

In the Index on page 123 it lists:

ISO AUTO Setting .. 49
ISO Sensitivity ... 49

You set ISO AUTO by pressing the green button while holding down the ISO
button.

Turning the rear wheel while holding the ISO turns ISO AUTO back off and
resets the ISO Sensitivity to where-ever you leave off turning the wheel.

Index page 125 lists:

Sound Effects ... 28

That takes you to "Set-up Menus" where All of the sounds appear to be in
"wrench 1" where you can control the volume of the sounds & turn
individual sounds on & off.

Also lets you turn sounds on/off for Fx1 & Fx2 Buttons.

On 11/20/2016 5:18 PM, jtainter wrote:

This seems to do it:

https://www.dpreview.com/forums/post/58681200

As far as I can tell, the manual does not say how to turn off Auto
ISO. I've had no trouble like this in previous Pentax DSLRs that I've
owned. Odd that in a professional-grade camera, there is no easy way
to turn off a feature designed for beginners.

Joe










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Re: K-1 Turning Off Auto ISO

2016-11-20 Thread Paul Stenquist
It's something I don't really think about. I go through all the menus with 
every new camera -- I've owned all with the exception of the k-5 II-- and just 
set everything to my liking. The K-1 is undoubtedly the best of the breed, and 
I'm sure it's replacement will be better yet. I'm at 13,000 exposures, so I'll 
probably need it by the time it's released. (Just call me Larry.:-)

Paul via phone

> On Nov 20, 2016, at 10:11 PM, P.J. Alling <webstertwenty...@gmail.com> wrote:
> 
> Which is exactly the way the K-5[II[s]] works.  To set auto ISO the K20D  
> required a trip to the Fn ISO menu.  Maybe the manual writers for the K-1 
> assume that the only people who'd buy a K-1 at one time used a K-7, K-5 or 
> K-3, so they didn't need the information.
> 
>> On 11/20/2016 6:09 PM, John wrote:
>> In the Index on page 123 it lists:
>> 
>> ISO AUTO Setting .. 49
>> ISO Sensitivity ... 49
>> 
>> You set ISO AUTO by pressing the green button while holding down the ISO
>> button.
>> 
>> Turning the rear wheel while holding the ISO turns ISO AUTO back off and
>> resets the ISO Sensitivity to where-ever you leave off turning the wheel.
>> 
>> Index page 125 lists:
>> 
>> Sound Effects ... 28
>> 
>> That takes you to "Set-up Menus" where All of the sounds appear to be in
>> "wrench 1" where you can control the volume of the sounds & turn
>> individual sounds on & off.
>> 
>> Also lets you turn sounds on/off for Fx1 & Fx2 Buttons.
>> 
>>> On 11/20/2016 5:18 PM, jtainter wrote:
>>> This seems to do it:
>>> 
>>> https://www.dpreview.com/forums/post/58681200
>>> 
>>> As far as I can tell, the manual does not say how to turn off Auto
>>> ISO. I've had no trouble like this in previous Pentax DSLRs that I've
>>> owned. Odd that in a professional-grade camera, there is no easy way
>>> to turn off a feature designed for beginners.
>>> 
>>> Joe
>>> 
>>> 
>>> 
>> 
> 
> 
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Re: K-1 Turning Off Auto ISO

2016-11-20 Thread P.J. Alling
Which is exactly the way the K-5[II[s]] works.  To set auto ISO the 
K20D  required a trip to the Fn ISO menu.  Maybe the manual writers for 
the K-1 assume that the only people who'd buy a K-1 at one time used a 
K-7, K-5 or K-3, so they didn't need the information.


On 11/20/2016 6:09 PM, John wrote:

In the Index on page 123 it lists:

ISO AUTO Setting .. 49
ISO Sensitivity ... 49

You set ISO AUTO by pressing the green button while holding down the ISO
button.

Turning the rear wheel while holding the ISO turns ISO AUTO back off and
resets the ISO Sensitivity to where-ever you leave off turning the wheel.

Index page 125 lists:

Sound Effects ... 28

That takes you to "Set-up Menus" where All of the sounds appear to be in
"wrench 1" where you can control the volume of the sounds & turn
individual sounds on & off.

Also lets you turn sounds on/off for Fx1 & Fx2 Buttons.

On 11/20/2016 5:18 PM, jtainter wrote:

This seems to do it:

https://www.dpreview.com/forums/post/58681200

As far as I can tell, the manual does not say how to turn off Auto
ISO. I've had no trouble like this in previous Pentax DSLRs that I've
owned. Odd that in a professional-grade camera, there is no easy way
to turn off a feature designed for beginners.

Joe








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Re: K-1 Turning Off Auto ISO

2016-11-20 Thread John

In the Index on page 123 it lists:

ISO AUTO Setting .. 49
ISO Sensitivity ... 49

You set ISO AUTO by pressing the green button while holding down the ISO
button.

Turning the rear wheel while holding the ISO turns ISO AUTO back off and
resets the ISO Sensitivity to where-ever you leave off turning the wheel.

Index page 125 lists:

Sound Effects ... 28

That takes you to "Set-up Menus" where All of the sounds appear to be in
"wrench 1" where you can control the volume of the sounds & turn
individual sounds on & off.

Also lets you turn sounds on/off for Fx1 & Fx2 Buttons.

On 11/20/2016 5:18 PM, jtainter wrote:

This seems to do it:

https://www.dpreview.com/forums/post/58681200

As far as I can tell, the manual does not say how to turn off Auto
ISO. I've had no trouble like this in previous Pentax DSLRs that I've
owned. Odd that in a professional-grade camera, there is no easy way
to turn off a feature designed for beginners.

Joe





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Re: K-1 Turning Off Auto ISO

2016-11-20 Thread Paul Stenquist
Well, mine may have come that way as well. Don't recall, but I usually started 
with aperture priority and set ISO to what I wanted. If the camera came preset 
with something else I never noticed. Because the K-1 is so good at high ISO I 
now use TV most often.

Paul via phone

> On Nov 20, 2016, at 5:51 PM, jtainter <jtain...@mindspring.com> wrote:
> 
> Paul wrote:
> 
> "Don't know what happened here. I meant to say, my K-1 goes to auto ISO only 
> in 
> TVR exposure mode."
> 
> Paul, every Pentax DSLR I've owned has come with Auto ISO as the initial 
> setting (*ist D, K10D, K20D, K-5, K-5II, K-5IIs, and now K-1).
> 
> Anyway, I think now I've got it licked.
> 
> Joe
> 
> 
> 
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Re: K-1 Turning Off Auto ISO

2016-11-20 Thread jtainter
Paul wrote:

"Don't know what happened here. I meant to say, my K-1 goes to auto ISO only in 
TVR exposure mode."

Paul, every Pentax DSLR I've owned has come with Auto ISO as the initial 
setting (*ist D, K10D, K20D, K-5, K-5II, K-5IIs, and now K-1).

Anyway, I think now I've got it licked.

Joe



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Re: K-1 Turning Off Auto ISO

2016-11-20 Thread Paul Stenquist
Don't know what happened here. I meant to say, my K-1 goes to auto ISO only in 
TVR exposure mode.

Paul via phone

> On Nov 20, 2016, at 5:31 PM, Paul Stenquist <pnstenqu...@mac.com> wrote:
> 
> Don't know what's going on here, but my K-1 goes ru auto ISO only because n 
> the exposure mode. I use that a lot, but it's limited to that mode. (Plus you 
> can limit the ISO range, even in tar.)
> 
> Paul via phone
> 
>> On Nov 20, 2016, at 5:18 PM, jtainter <jtain...@mindspring.com> wrote:
>> 
>> This seems to do it:
>> 
>> https://www.dpreview.com/forums/post/58681200
>> 
>> As far as I can tell, the manual does not say how to turn off Auto ISO. I've 
>> had no trouble like this in previous Pentax DSLRs that I've owned. Odd that 
>> in a professional-grade camera, there is no easy way to turn off a feature 
>> designed for beginners.
>> 
>> Joe
>> 
>> 
>> 
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Re: K-1 Turning Off Auto ISO

2016-11-20 Thread Paul Stenquist
Don't know what's going on here, but my K-1 goes ru auto ISO only because n the 
exposure mode. I use that a lot, but it's limited to that mode. (Plus you can 
limit the ISO range, even in tar.)

Paul via phone

> On Nov 20, 2016, at 5:18 PM, jtainter <jtain...@mindspring.com> wrote:
> 
> This seems to do it:
> 
> https://www.dpreview.com/forums/post/58681200
> 
> As far as I can tell, the manual does not say how to turn off Auto ISO. I've 
> had no trouble like this in previous Pentax DSLRs that I've owned. Odd that 
> in a professional-grade camera, there is no easy way to turn off a feature 
> designed for beginners.
> 
> Joe
> 
> 
> 
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K-1 Turning Off Auto ISO

2016-11-20 Thread jtainter
This seems to do it:

https://www.dpreview.com/forums/post/58681200

As far as I can tell, the manual does not say how to turn off Auto ISO. I've 
had no trouble like this in previous Pentax DSLRs that I've owned. Odd that in 
a professional-grade camera, there is no easy way to turn off a feature 
designed for beginners.

Joe



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Re: Auto ISO

2009-07-27 Thread Brian Walters
Hi Fernando

On Sat, 25 Jul 2009 22:29 -0400, Fernando fer.p...@gmail.com wrote:
 Hi Brian,
 
 This can be set in the DS by using the custom setting menu, opcion
 ISO Corction in AUTO (ooh, those beautiful option names Pentax used
 to use...)
 you can select any of these options:
 ISO 200-800
 ISO 200-400
 ISO 200-1600
 ISO 200-3200
 
 Didn't check but I believe my *istD has similar options
 


I never realised that a firmware update had amended the Automatic
Sensitivity correction.  Thanks for posting.



Cheers

Brian

++
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Western Sydney Australia
http://members.westnet.com.au/brianwal/SL/
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Auto ISO

2009-07-25 Thread John Graves
Auto ISO  is one of the features added to my DS with the last update.  I 
switched it in this afternoon while taking more bird pictures.  Aside 
from the discovery that I am not as fast as a hummingbird, I could not 
discern what AUTO ISO added to the picture equation.  Is there a 
discussion of this feature somewhere that explains what is is  how it 
operates?  For instance, does it start at the last set ISO level and 
move up or down based on some ideal setting of aperture and speed.  Does 
 it require that I select one of the modes to make it work.  This 
would be the most logical to me. Is this a feature I can ignore if not 
with impunity at least with some peace of mind?

--
John Graves
WA1JG
jh.gra...@verizon.net

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Re: Auto ISO

2009-07-25 Thread Brian Walters
On Sat, 25 Jul 2009 16:45 -0400, John Graves jh.gra...@verizon.net
wrote:
 Auto ISO  is one of the features added to my DS with the last update.  I 
 switched it in this afternoon while taking more bird pictures.  Aside 
 from the discovery that I am not as fast as a hummingbird, I could not 
 discern what AUTO ISO added to the picture equation.  Is there a 
 discussion of this feature somewhere that explains what is is  how it 
 operates?  For instance, does it start at the last set ISO level and 
 move up or down based on some ideal setting of aperture and speed.  Does 
   it require that I select one of the modes to make it work.  This 
 would be the most logical to me. Is this a feature I can ignore if not 
 with impunity at least with some peace of mind?
 -- 


Actually I wasn't aware that Auto had been added to the *ist DS (my
second camera), so thanks for posting.

My understanding (and this could be completely wrong) is that Auto ISO
allows the camera to adjust the ISO to suit the lighting conditions. 
So, if you were shooting in Av mode and set an aperture that would give
a shutter speed too low for hand holding, the ISO would be increased to
achieve an acceptable shutter speed (or as high a speed as possible). 
At least that's how it seems to work with the K200D.

With the 200D (and I assume the other K series bodies), you can limit
the range over which the camera is allowed to increase the ISO.  That
doesn't seem possible on the DS, so I assume (a lot of assumptions
here!) that the camera can adjust the ISO right up to 3200 with the AUTO
setting, if necessary.

Cheers

Brian

++
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Western Sydney Australia
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Re: Auto ISO

2009-07-25 Thread P. J. Alling
That's pretty much the way it works on the DS, I've never used it on the 
D so I don't know if it even has it, and I think used it on the Ds once.


Brian Walters wrote:

On Sat, 25 Jul 2009 16:45 -0400, John Graves jh.gra...@verizon.net
wrote:
  
Auto ISO  is one of the features added to my DS with the last update.  I 
switched it in this afternoon while taking more bird pictures.  Aside 
from the discovery that I am not as fast as a hummingbird, I could not 
discern what AUTO ISO added to the picture equation.  Is there a 
discussion of this feature somewhere that explains what is is  how it 
operates?  For instance, does it start at the last set ISO level and 
move up or down based on some ideal setting of aperture and speed.  Does 
  it require that I select one of the modes to make it work.  This 
would be the most logical to me. Is this a feature I can ignore if not 
with impunity at least with some peace of mind?

--




Actually I wasn't aware that Auto had been added to the *ist DS (my
second camera), so thanks for posting.

My understanding (and this could be completely wrong) is that Auto ISO
allows the camera to adjust the ISO to suit the lighting conditions. 
So, if you were shooting in Av mode and set an aperture that would give

a shutter speed too low for hand holding, the ISO would be increased to
achieve an acceptable shutter speed (or as high a speed as possible). 
At least that's how it seems to work with the K200D.


With the 200D (and I assume the other K series bodies), you can limit
the range over which the camera is allowed to increase the ISO.  That
doesn't seem possible on the DS, so I assume (a lot of assumptions
here!) that the camera can adjust the ISO right up to 3200 with the AUTO
setting, if necessary.

Cheers

Brian

++
Brian Walters
Western Sydney Australia
http://members.westnet.com.au/brianwal/SL/
  



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Re: Auto ISO

2009-07-25 Thread John Graves
In reflecting on the feature, it seemed to me that something had to be 
fixed, and so at the very minimum it would only work in the picture 
modes, and probably in the Av and Ty modes, but I couldn't find a way to 
do an in cameras test.  Going into RAW processing I could see what ISO 
level was used but I haven't done that as yet.


Ah hah..After some reflection, I went out and set the ISO to Auto 
and took a picture.  If you bring the picture back to the screen for 
review and hit the INFO button twice, the shot parameters are shown.  In 
this case it was ISO 800 and I was in Av mode.  In flower mode, it set 
the ISO to 1600 so it appears that the aperture and speed are set and 
the AUTO ISO moves the ISO setting to make it happen.  Interesting.  I 
can see why you would want to set a usable range of ISO speeds if you 
were going to use this feature as it is not displayed in the eyepiece.


John Graves
WA1JG
jh.gra...@verizon.net

Brian Walters wrote:

On Sat, 25 Jul 2009 16:45 -0400, John Graves jh.gra...@verizon.net
wrote:
Auto ISO  is one of the features added to my DS with the last update.  I 
switched it in this afternoon while taking more bird pictures.  Aside 
from the discovery that I am not as fast as a hummingbird, I could not 
discern what AUTO ISO added to the picture equation.  Is there a 
discussion of this feature somewhere that explains what is is  how it 
operates?  For instance, does it start at the last set ISO level and 
move up or down based on some ideal setting of aperture and speed.  Does 
  it require that I select one of the modes to make it work.  This 
would be the most logical to me. Is this a feature I can ignore if not 
with impunity at least with some peace of mind?

--



Actually I wasn't aware that Auto had been added to the *ist DS (my
second camera), so thanks for posting.

My understanding (and this could be completely wrong) is that Auto ISO
allows the camera to adjust the ISO to suit the lighting conditions. 
So, if you were shooting in Av mode and set an aperture that would give

a shutter speed too low for hand holding, the ISO would be increased to
achieve an acceptable shutter speed (or as high a speed as possible). 
At least that's how it seems to work with the K200D.


With the 200D (and I assume the other K series bodies), you can limit
the range over which the camera is allowed to increase the ISO.  That
doesn't seem possible on the DS, so I assume (a lot of assumptions
here!) that the camera can adjust the ISO right up to 3200 with the AUTO
setting, if necessary.

Cheers

Brian

++
Brian Walters
Western Sydney Australia
http://members.westnet.com.au/brianwal/SL/





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Re: Auto ISO

2009-07-25 Thread Brian Walters
On Sat, 25 Jul 2009 19:08 -0400, John Graves jh.gra...@verizon.net
wrote:
 In reflecting on the feature, it seemed to me that something had to be 
 fixed, and so at the very minimum it would only work in the picture 
 modes, and probably in the Av and Ty modes, but I couldn't find a way to 
 do an in cameras test.  Going into RAW processing I could see what ISO 
 level was used but I haven't done that as yet.
 
 Ah hah..After some reflection, I went out and set the ISO to Auto 
 and took a picture.  If you bring the picture back to the screen for 
 review and hit the INFO button twice, the shot parameters are shown.  In 
 this case it was ISO 800 and I was in Av mode.  In flower mode, it set 
 the ISO to 1600 so it appears that the aperture and speed are set and 
 the AUTO ISO moves the ISO setting to make it happen.  Interesting.  I 
 can see why you would want to set a usable range of ISO speeds if you 
 were going to use this feature as it is not displayed in the eyepiece.



I just did a few test shots with the DS in Av mode.  I couldn't get the
camera to set an ISO higher than 800.  There seems to be a built-in
limiting ISO that is not able to be set by the user (unlike the K
bodies) and, based on your tests, the limiting ISO might be different
depending on the shooting mode set.




Cheers

Brian

++
Brian Walters
Western Sydney Australia
http://members.westnet.com.au/brianwal/SL/



 
 John Graves
 WA1JG
 jh.gra...@verizon.net
 
 Brian Walters wrote:
  On Sat, 25 Jul 2009 16:45 -0400, John Graves jh.gra...@verizon.net
  wrote:
  Auto ISO  is one of the features added to my DS with the last update.  I 
  switched it in this afternoon while taking more bird pictures.  Aside 
  from the discovery that I am not as fast as a hummingbird, I could not 
  discern what AUTO ISO added to the picture equation.  Is there a 
  discussion of this feature somewhere that explains what is is  how it 
  operates?  For instance, does it start at the last set ISO level and 
  move up or down based on some ideal setting of aperture and speed.  Does 
it require that I select one of the modes to make it work.  This 
  would be the most logical to me. Is this a feature I can ignore if not 
  with impunity at least with some peace of mind?
  -- 
  
  
  Actually I wasn't aware that Auto had been added to the *ist DS (my
  second camera), so thanks for posting.
  
  My understanding (and this could be completely wrong) is that Auto ISO
  allows the camera to adjust the ISO to suit the lighting conditions. 
  So, if you were shooting in Av mode and set an aperture that would give
  a shutter speed too low for hand holding, the ISO would be increased to
  achieve an acceptable shutter speed (or as high a speed as possible). 
  At least that's how it seems to work with the K200D.
  
  With the 200D (and I assume the other K series bodies), you can limit
  the range over which the camera is allowed to increase the ISO.  That
  doesn't seem possible on the DS, so I assume (a lot of assumptions
  here!) that the camera can adjust the ISO right up to 3200 with the AUTO
  setting, if necessary.
  
  Cheers
  
  Brian
  
  ++
  Brian Walters
  Western Sydney Australia
  http://members.westnet.com.au/brianwal/SL/
  
  
-- 


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Re: Auto ISO

2009-07-25 Thread Fernando
Hi Brian,

This can be set in the DS by using the custom setting menu, opcion
ISO Corction in AUTO (ooh, those beautiful option names Pentax used
to use...)
you can select any of these options:
ISO 200-800
ISO 200-400
ISO 200-1600
ISO 200-3200

Didn't check but I believe my *istD has similar options


On Sat, Jul 25, 2009 at 7:45 PM, Brian Walterssupera1...@fastmail.fm wrote:
 On Sat, 25 Jul 2009 19:08 -0400, John Graves jh.gra...@verizon.net
 wrote:
 In reflecting on the feature, it seemed to me that something had to be
 fixed, and so at the very minimum it would only work in the picture
 modes, and probably in the Av and Ty modes, but I couldn't find a way to
 do an in cameras test.  Going into RAW processing I could see what ISO
 level was used but I haven't done that as yet.

 Ah hah..After some reflection, I went out and set the ISO to Auto
 and took a picture.  If you bring the picture back to the screen for
 review and hit the INFO button twice, the shot parameters are shown.  In
 this case it was ISO 800 and I was in Av mode.  In flower mode, it set
 the ISO to 1600 so it appears that the aperture and speed are set and
 the AUTO ISO moves the ISO setting to make it happen.  Interesting.  I
 can see why you would want to set a usable range of ISO speeds if you
 were going to use this feature as it is not displayed in the eyepiece.



 I just did a few test shots with the DS in Av mode.  I couldn't get the
 camera to set an ISO higher than 800.  There seems to be a built-in
 limiting ISO that is not able to be set by the user (unlike the K
 bodies) and, based on your tests, the limiting ISO might be different
 depending on the shooting mode set.




 Cheers

 Brian

 ++
 Brian Walters
 Western Sydney Australia
 http://members.westnet.com.au/brianwal/SL/




 John Graves
 WA1JG
 jh.gra...@verizon.net

 Brian Walters wrote:
  On Sat, 25 Jul 2009 16:45 -0400, John Graves jh.gra...@verizon.net
  wrote:
  Auto ISO  is one of the features added to my DS with the last update.  I
  switched it in this afternoon while taking more bird pictures.  Aside
  from the discovery that I am not as fast as a hummingbird, I could not
  discern what AUTO ISO added to the picture equation.  Is there a
  discussion of this feature somewhere that explains what is is  how it
  operates?  For instance, does it start at the last set ISO level and
  move up or down based on some ideal setting of aperture and speed.  Does
    it require that I select one of the modes to make it work.  This
  would be the most logical to me. Is this a feature I can ignore if not
  with impunity at least with some peace of mind?
  --
 
 
  Actually I wasn't aware that Auto had been added to the *ist DS (my
  second camera), so thanks for posting.
 
  My understanding (and this could be completely wrong) is that Auto ISO
  allows the camera to adjust the ISO to suit the lighting conditions.
  So, if you were shooting in Av mode and set an aperture that would give
  a shutter speed too low for hand holding, the ISO would be increased to
  achieve an acceptable shutter speed (or as high a speed as possible).
  At least that's how it seems to work with the K200D.
 
  With the 200D (and I assume the other K series bodies), you can limit
  the range over which the camera is allowed to increase the ISO.  That
  doesn't seem possible on the DS, so I assume (a lot of assumptions
  here!) that the camera can adjust the ISO right up to 3200 with the AUTO
  setting, if necessary.
 
  Cheers
 
  Brian
 
  ++
  Brian Walters
  Western Sydney Australia
  http://members.westnet.com.au/brianwal/SL/
 
 
 --


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Re: Auto ISO

2009-07-25 Thread John Graves
Who knew  Would be wonderful to have a mini-manual to print out when 
they do an update


John Graves
WA1JG
jh.gra...@verizon.net

Fernando wrote:

Hi Brian,

This can be set in the DS by using the custom setting menu, opcion
ISO Corction in AUTO (ooh, those beautiful option names Pentax used
to use...)
you can select any of these options:
ISO 200-800
ISO 200-400
ISO 200-1600
ISO 200-3200

Didn't check but I believe my *istD has similar options


On Sat, Jul 25, 2009 at 7:45 PM, Brian Walterssupera1...@fastmail.fm wrote:

On Sat, 25 Jul 2009 19:08 -0400, John Graves jh.gra...@verizon.net
wrote:

In reflecting on the feature, it seemed to me that something had to be
fixed, and so at the very minimum it would only work in the picture
modes, and probably in the Av and Ty modes, but I couldn't find a way to
do an in cameras test.  Going into RAW processing I could see what ISO
level was used but I haven't done that as yet.

Ah hah..After some reflection, I went out and set the ISO to Auto
and took a picture.  If you bring the picture back to the screen for
review and hit the INFO button twice, the shot parameters are shown.  In
this case it was ISO 800 and I was in Av mode.  In flower mode, it set
the ISO to 1600 so it appears that the aperture and speed are set and
the AUTO ISO moves the ISO setting to make it happen.  Interesting.  I
can see why you would want to set a usable range of ISO speeds if you
were going to use this feature as it is not displayed in the eyepiece.



I just did a few test shots with the DS in Av mode.  I couldn't get the
camera to set an ISO higher than 800.  There seems to be a built-in
limiting ISO that is not able to be set by the user (unlike the K
bodies) and, based on your tests, the limiting ISO might be different
depending on the shooting mode set.




Cheers

Brian

++
Brian Walters
Western Sydney Australia
http://members.westnet.com.au/brianwal/SL/




John Graves
WA1JG
jh.gra...@verizon.net

Brian Walters wrote:

On Sat, 25 Jul 2009 16:45 -0400, John Graves jh.gra...@verizon.net
wrote:

Auto ISO  is one of the features added to my DS with the last update.  I
switched it in this afternoon while taking more bird pictures.  Aside
from the discovery that I am not as fast as a hummingbird, I could not
discern what AUTO ISO added to the picture equation.  Is there a
discussion of this feature somewhere that explains what is is  how it
operates?  For instance, does it start at the last set ISO level and
move up or down based on some ideal setting of aperture and speed.  Does
  it require that I select one of the modes to make it work.  This
would be the most logical to me. Is this a feature I can ignore if not
with impunity at least with some peace of mind?
--


Actually I wasn't aware that Auto had been added to the *ist DS (my
second camera), so thanks for posting.

My understanding (and this could be completely wrong) is that Auto ISO
allows the camera to adjust the ISO to suit the lighting conditions.
So, if you were shooting in Av mode and set an aperture that would give
a shutter speed too low for hand holding, the ISO would be increased to
achieve an acceptable shutter speed (or as high a speed as possible).
At least that's how it seems to work with the K200D.

With the 200D (and I assume the other K series bodies), you can limit
the range over which the camera is allowed to increase the ISO.  That
doesn't seem possible on the DS, so I assume (a lot of assumptions
here!) that the camera can adjust the ISO right up to 3200 with the AUTO
setting, if necessary.

Cheers

Brian

++
Brian Walters
Western Sydney Australia
http://members.westnet.com.au/brianwal/SL/



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