Why the x100s files are lacking

Started Mar 29, 2013 | Discussions thread
mr moonlight
Senior MemberPosts: 1,592
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Re: Why the x100s files are lacking
In reply to howardfuhrman, Mar 29, 2013

howardfuhrman wrote:

Moonlight,

On my 2000th post to dpreview,  I thank you for your analysis.

If someone with a X100S sets the camera to A and - ISO 3200, let's say the  camera shows the shutter speed of 1/100 sec.  If the scene and aperature setting remains the same and the camera ISO is increased from 3200 to 6400, I would expect the  shutter speed to double to 1/200 sec.  However according to the article, since there is so little difference in "real" ISO I believe the shutter speed would only increase 1/125 or 1/130.  What are users of the X100S experiencing ?

I can't speak for the X100s since I don't have one yet, but I imagine that Fuji's exposure settings will remain the same as it did on the Xpro1. If you put the Xpro1's shutter speed into Auto mode, the shutter speed will increase from 1/100 to 1/200 if you increase the ISO from 3200 to 6400.

Compared to my 5Dii, Fuji's ISO is about a 1/3 stop behind. If I want my exposures to look like my 5Dii, I take a reading and add 1/3 stop. If you're shooting in an Auto mode, push the exposure comp up 1/3 stop and you're good to go. A 1/3 stop in ISO is not going to make a noticeable difference in noise. I think it's just a case of telephone tag where 1/3 stop turned into 3 stops a ways down the line.

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