ISO 50 - Reduced DR on original DP's

Scottelly wrote:

ISO 100 is DEFINITELY the one to stick with, from what I experienced with my SD14. For some reason the colors of the sunrise were "off" when I shot it at ISO 50. They would get over-saturated, which I guess would be that dynamic range issue. You can see that it does not always happen though. Take a look at the 6 shots of the sunrise down near the bottom here: http://ffphotos.zenfolio.com/sigmasd14

That's an ISO series, stating with ISO 50 and going all the way up to ISO 1600, with comments to the right of some of the photos (when you click on the thumbnails). You can download the full-size, original jpegs from that gallery, if you like. Just use the menu button that appears in the top left, when you mouse over the large image, after clicking a thumbnail.

Sorry it's not a full ISO 50 analysis. I was just doing some experiments. I have more somewhere, but I think the hard drive is up in Virginia. My stuff is strewn all over the place!

I assume you are talking about the image SDIM6721, which is ISO 50. It is exposed at 2 seconds. The next is ISO 100 and is exposed at 1 s.

As have been said before, the SD14 has no AFE. So, changing ISO do not do a thing, (except changing exposure if you choose to do so) and storing ISO 50 in meta data.

What happens here is that the camera exposes more so the brighter parts gets outwashed colors.

Now, this image is overall rather dark. Did really SD14 choose this exposure? Let it to choose exposure all by it own it feels like it should be brighter. So, I wonder if you have done any compensation - either manually or with the exposure compensation setting?

If so, then the test has no value.