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" <[email protected]>
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/
--
The free man owns himself. He can damage himself with either eating or
drinking; he can ruin himself with gambling. If he does he is certainly a damn
fool, and he might possibly be a damned soul; but if he may not, he is not a
free man any more than a dog.
--G. K. Chesterton
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