ISO 50 on photo like a auto iso (fw 1.6)

[MorD]

I think the "iso 50" on photos are broken on fw 1.6, the behavior is like on auto iso.
Only work ok when i choose a exposure time, on 1.4 this didn't happen.
My last night photos "on ISO 50" have 1600 iso on exif info.

 

[gitup]

Yes.
It fixed on ISO 50 at night, the image will be very darker, and not usable.

 

[MorD]

Yes.
It fixed on ISO 50 at night, the image will be very darker, and not usable.

But this has no sense. In night, with iso50 the camera need more exposure time not autoiso.
With that fix ,now, this setting doesn't work on other situations.
I tested it indoor, using natural light on cloudy day, even in this situation , ISO 50 has the same value as the AUTOISO, over 500. The same situation but with a iso100, the picture has a good exposition.
When I select one iso setting ,I expect a behavior like "Mode P" on photograph, in others words, If i select ISO50, my camera has to calculate the exposure time, not rise the iso.

edit: I use it a lot, because the camera calculate the exposure time more faster than I, and ,sometimes for "fast" landscape photography with ND filter, the "mode p" is usefull.