XF Camera LS vs FPS - Exposure Difference

Discussions regarding Phase One 645 XF
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XF Camera LS vs FPS - Exposure Difference

Postby arnoldbelohlavek » Sat Apr 15, 2017 10:17 am

Hi!
I am using a Phaseone XF Camera with the update from Leaf Credo 3.02.4 and LS lens with Firmware 1.02.3
Yesterday , I noticed that if i am using my 80mm LS Lens and on the XF - Camera LS-Priority is on ...
at a T of 1/1250 that my Image is overexposed by 1 Stop over Exposures via FPS !
I have tested many Times , but this issue exists !
It seems that every time , when LS priority (until 1/1600) is active , LS is one stop slower!
Whats the Problem ?

Does anyone have those issue too ?
arnoldbelohlavek
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Re: XF Camera LS vs FPS - Exposure Difference

Postby C-M-B » Sun Apr 23, 2017 8:28 pm

Maybe your shutter need to be serviced? Do you happen to know how many actuations it has?

edit: does this happen in the studio or with ambient light?
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Re: XF Camera LS vs FPS - Exposure Difference

Postby NN636060166224184482UL » Wed Nov 22, 2017 3:15 pm

I also have an issue with LS lens the shutter priority is set as LS priority. the shutter seems two click noise that never has for FPS mode.
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