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 Walters<supera1...@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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